v3.25.4
SCHEDULE III (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Initial Cost to the Company [Abstract]        
Land [1],[2] $ 1,287,811,000      
Buildings and Improvements [1],[2] 2,356,922,000      
Costs Capitalized Subsequent to Acquisition [1],[2] 3,020,279,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [1],[2] 1,295,257,000      
Buildings and Improvements [1],[2] 5,369,755,000      
Right-of-Use Assets - Ground Leases (operating) [3] 34,976,000 $ 38,393,000    
Total [4] 6,699,988,000 [1],[2] 6,177,916,000 $ 5,493,195,000 $ 4,934,421,000
Accumulated Depreciation 1,583,532,000 [1],[2] $ 1,415,576,000 $ 1,273,723,000 $ 1,150,814,000
Industrial [Member]        
Initial Cost to the Company [Abstract]        
Land 949,280,000      
Buildings and Improvements 2,355,825,000      
Costs Capitalized Subsequent to Acquisition 2,649,707,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land 951,787,000      
Buildings and Improvements 5,003,025,000      
Right-of-Use Assets - Ground Leases (operating) 34,976,000      
Total 5,989,788,000      
Accumulated Depreciation 1,583,224,000      
Industrial [Member] | Westport Commerce Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] 980,000      
Buildings and Improvements [5] 3,800,000      
Costs Capitalized Subsequent to Acquisition [5] 4,827,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 980,000      
Buildings and Improvements [5] 8,627,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,607,000      
Accumulated Depreciation [5] $ 6,383,000      
Year Acquired [5] 1994      
Year Constructed [5] 1983/87      
Industrial [Member] | Benjamin Distribution Center 1 and 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 843,000      
Buildings and Improvements [5] 3,963,000      
Costs Capitalized Subsequent to Acquisition [5] 2,565,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 883,000      
Buildings and Improvements [5] 6,488,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,371,000      
Accumulated Depreciation [5] $ 5,058,000      
Year Acquired [5] 1997      
Year Constructed [5] 1996      
Industrial [Member] | Benjamin Distribution Center 3 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 407,000      
Buildings and Improvements [5] 1,503,000      
Costs Capitalized Subsequent to Acquisition [5] 874,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 407,000      
Buildings and Improvements [5] 2,377,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,784,000      
Accumulated Depreciation [5] $ 1,986,000      
Year Acquired [5] 1999      
Year Constructed [5] 1988      
Industrial [Member] | Palm River Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,190,000      
Buildings and Improvements [5] 4,625,000      
Costs Capitalized Subsequent to Acquisition [5] 4,608,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,190,000      
Buildings and Improvements [5] 9,233,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,423,000      
Accumulated Depreciation [5] $ 6,816,000      
Year Acquired [5] 1997/98      
Year Constructed [5] 1990/97/98      
Industrial [Member] | Palm River North 1 and 3 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,005,000      
Buildings and Improvements [5] 4,688,000      
Costs Capitalized Subsequent to Acquisition [5] 4,984,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,005,000      
Buildings and Improvements [5] 9,672,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,677,000      
Accumulated Depreciation [5] $ 6,239,000      
Year Acquired [5] 1998      
Year Constructed [5] 2000      
Industrial [Member] | Palm River North 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 634,000      
Buildings and Improvements [5] 4,418,000      
Costs Capitalized Subsequent to Acquisition [5] 1,953,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 634,000      
Buildings and Improvements [5] 6,371,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,005,000      
Accumulated Depreciation [5] $ 4,152,000      
Year Acquired [5] 1997/98      
Year Constructed [5] 1999      
Industrial [Member] | Palm River South 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 655,000      
Buildings and Improvements [5] 3,187,000      
Costs Capitalized Subsequent to Acquisition [5] 1,409,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 655,000      
Buildings and Improvements [5] 4,596,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,251,000      
Accumulated Depreciation [5] $ 2,783,000      
Year Acquired [5] 2000      
Year Constructed [5] 2005      
Industrial [Member] | Palm River South 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 655,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,441,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 655,000      
Buildings and Improvements [5] 5,441,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,096,000      
Accumulated Depreciation [5] $ 3,412,000      
Year Acquired [5] 2000      
Year Constructed [5] 2006      
Industrial [Member] | Walden Distribution Center 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 337,000      
Buildings and Improvements [5] 3,318,000      
Costs Capitalized Subsequent to Acquisition [5] 2,242,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 337,000      
Buildings and Improvements [5] 5,560,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,897,000      
Accumulated Depreciation [5] $ 3,550,000      
Year Acquired [5] 1997/98      
Year Constructed [5] 2001      
Industrial [Member] | Walden Distribution Center 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 465,000      
Buildings and Improvements [5] 3,738,000      
Costs Capitalized Subsequent to Acquisition [5] 1,804,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 465,000      
Buildings and Improvements [5] 5,542,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,007,000      
Accumulated Depreciation [5] $ 4,121,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | Oak Creek Distribution Center 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,109,000      
Buildings and Improvements [5] 6,126,000      
Costs Capitalized Subsequent to Acquisition [5] 2,017,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,109,000      
Buildings and Improvements [5] 8,143,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,252,000      
Accumulated Depreciation [5] $ 5,735,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | Oak Creek Distribution Center 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 647,000      
Buildings and Improvements [5] 3,603,000      
Costs Capitalized Subsequent to Acquisition [5] 2,398,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 647,000      
Buildings and Improvements [5] 6,001,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,648,000      
Accumulated Depreciation [5] $ 4,026,000      
Year Acquired [5] 2003      
Year Constructed [5] 2001      
Industrial [Member] | Oak Creek Distribution Center 3 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 439,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,668,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 556,000      
Buildings and Improvements [5] 3,551,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,107,000      
Accumulated Depreciation [5] $ 1,981,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | Oak Creek Distribution Center 4 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 682,000      
Buildings and Improvements [5] 6,472,000      
Costs Capitalized Subsequent to Acquisition [5] 1,324,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 682,000      
Buildings and Improvements [5] 7,796,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,478,000      
Accumulated Depreciation [5] $ 4,616,000      
Year Acquired [5] 2005      
Year Constructed [5] 2001      
Industrial [Member] | Oak Creek Distribution Center 5 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 724,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,681,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 916,000      
Buildings and Improvements [5] 6,489,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,405,000      
Accumulated Depreciation [5] $ 3,579,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | Oak Creek Distribution Center 6 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 642,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,314,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 812,000      
Buildings and Improvements [5] 6,144,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,956,000      
Accumulated Depreciation [5] $ 3,361,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Oak Creek Distribution Center 7 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 740,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,481,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 740,000      
Buildings and Improvements [5] 6,481,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,221,000      
Accumulated Depreciation [5] $ 1,878,000      
Year Acquired [5] 2005      
Year Constructed [5] 2017      
Industrial [Member] | Oak Creek Distribution Center 8 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 843,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,501,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,051,000      
Buildings and Improvements [5] 6,293,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,344,000      
Accumulated Depreciation [5] $ 1,992,000      
Year Acquired [5] 2005      
Year Constructed [5] 2015      
Industrial [Member] | Oak Creek Distribution Center 9 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 618,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,266,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 781,000      
Buildings and Improvements [5] 5,103,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,884,000      
Accumulated Depreciation [5] $ 2,528,000      
Year Acquired [5] 2005      
Year Constructed [5] 2009      
Industrial [Member] | Oak Creek Distribution Center 10 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 106,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 1,905,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 352,000      
Buildings and Improvements [5] 1,659,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,011,000      
Accumulated Depreciation [5] $ 22,000      
Year Acquired [5] 2005      
Year Constructed [5] n/a      
Industrial [Member] | Oak Creek Distribution Center A [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 185,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 1,573,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 185,000      
Buildings and Improvements [5] 1,573,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,758,000      
Accumulated Depreciation [5] $ 831,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Oak Creek Distribution Center B [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 227,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 1,682,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 227,000      
Buildings and Improvements [5] 1,682,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,909,000      
Accumulated Depreciation [5] $ 875,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Oak Creek Distribution Center C | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 355,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 1,299,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 355,000      
Buildings and Improvements [5] 1,299,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,654,000      
Accumulated Depreciation [5] $ 190,000      
Year Acquired [5] 2005      
Year Constructed [5] n/a      
Industrial [Member] | Airport Commerce Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,257,000      
Buildings and Improvements [5] 4,012,000      
Costs Capitalized Subsequent to Acquisition [5] 1,607,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,257,000      
Buildings and Improvements [5] 5,619,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,876,000      
Accumulated Depreciation [5] $ 3,817,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | Westlake Distribution Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,333,000      
Buildings and Improvements [5] 6,998,000      
Costs Capitalized Subsequent to Acquisition [5] 3,093,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,333,000      
Buildings and Improvements [5] 10,091,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,424,000      
Accumulated Depreciation [5] $ 7,656,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998/99      
Industrial [Member] | Expressway Commerce Center 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 915,000      
Buildings and Improvements [5] 5,346,000      
Costs Capitalized Subsequent to Acquisition [5] 1,954,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 915,000      
Buildings and Improvements [5] 7,300,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,215,000      
Accumulated Depreciation [5] $ 4,867,000      
Year Acquired [5] 2002      
Year Constructed [5] 2004      
Industrial [Member] | Expressway Commerce Center 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,013,000      
Buildings and Improvements [5] 3,247,000      
Costs Capitalized Subsequent to Acquisition [5] 1,356,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,013,000      
Buildings and Improvements [5] 4,603,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,616,000      
Accumulated Depreciation [5] $ 3,078,000      
Year Acquired [5] 2003      
Year Constructed [5] 2001      
Industrial [Member] | Silo Bend Distribution Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,131,000      
Buildings and Improvements [5] 27,497,000      
Costs Capitalized Subsequent to Acquisition [5] 8,484,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,132,000      
Buildings and Improvements [5] 35,980,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 40,112,000      
Accumulated Depreciation [5] $ 15,939,000      
Year Acquired [5] 2011      
Year Constructed [5] 1987/90      
Industrial [Member] | Tampa East Distribution Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 791,000      
Buildings and Improvements [5] 4,758,000      
Costs Capitalized Subsequent to Acquisition [5] 1,239,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 791,000      
Buildings and Improvements [5] 5,997,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,788,000      
Accumulated Depreciation [5] $ 2,793,000      
Year Acquired [5] 2011      
Year Constructed [5] 1984      
Industrial [Member] | Tampa West Distribution Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,139,000      
Buildings and Improvements [5] 8,502,000      
Costs Capitalized Subsequent to Acquisition [5] 3,429,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,140,000      
Buildings and Improvements [5] 11,930,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,070,000      
Accumulated Depreciation [5] $ 4,886,000      
Year Acquired [5] 2011      
Year Constructed [5] 1975/93/94      
Industrial [Member] | Madison Distribution Center [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 495,000      
Buildings and Improvements [5] 2,779,000      
Costs Capitalized Subsequent to Acquisition [5] 630,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 495,000      
Buildings and Improvements [5] 3,409,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,904,000      
Accumulated Depreciation [5] $ 1,580,000      
Year Acquired [5] 2012      
Year Constructed [5] 2007      
Industrial [Member] | Madison Distribution Center 2 & 3 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 624,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,402,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 624,000      
Buildings and Improvements [5] 7,402,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,026,000      
Accumulated Depreciation [5] $ 2,562,000      
Year Acquired [5] 2012      
Year Constructed [5] 2015      
Industrial [Member] | Madison Distribution Center 4 & 5 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 565,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,633,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 565,000      
Buildings and Improvements [5] 8,633,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,198,000      
Accumulated Depreciation [5] $ 2,924,000      
Year Acquired [5] 2012      
Year Constructed [5] 2016      
Industrial [Member] | Grand Oaks 75 Business Center 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,572,000      
Buildings and Improvements [5] 12,979,000      
Costs Capitalized Subsequent to Acquisition [5] 373,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,572,000      
Buildings and Improvements [5] 13,352,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,924,000      
Accumulated Depreciation [5] $ 3,228,000      
Year Acquired [5] 2019      
Year Constructed [5] 2017      
Industrial [Member] | Grand Oaks 75 Business Center 2 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,589,000      
Buildings and Improvements [5] 10,226,000      
Costs Capitalized Subsequent to Acquisition [5] 2,393,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,589,000      
Buildings and Improvements [5] 12,619,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,208,000      
Accumulated Depreciation [5] $ 2,594,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Grand Oaks 75 Business Center 3 | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,767,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,957,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,770,000      
Buildings and Improvements [5] 9,954,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,724,000      
Accumulated Depreciation [5] $ 1,563,000      
Year Acquired [5] 2019      
Year Constructed [5] 2021      
Industrial [Member] | Grand Oaks 75 Business Center 4 | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,334,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 17,094,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,338,000      
Buildings and Improvements [5] 17,090,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 19,428,000      
Accumulated Depreciation [5] $ 3,073,000      
Year Acquired [5] 2019      
Year Constructed [5] 2022      
Industrial [Member] | Crossroads Logistics Park 1 [Member] | Tampa [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,758,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,592,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,758,000      
Buildings and Improvements [5] 15,592,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 19,350,000      
Accumulated Depreciation [5] $ 258,000      
Year Acquired [5] 2023      
Year Constructed [5] 2025      
Industrial [Member] | Chancellor Center [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 291,000      
Buildings and Improvements [5] 1,711,000      
Costs Capitalized Subsequent to Acquisition [5] 750,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 291,000      
Buildings and Improvements [5] 2,461,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,752,000      
Accumulated Depreciation [5] $ 1,908,000      
Year Acquired [5] 1996/97      
Year Constructed [5] 1996/97      
Industrial [Member] | Exchange Distribution Center 1 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 603,000      
Buildings and Improvements [5] 2,414,000      
Costs Capitalized Subsequent to Acquisition [5] 3,814,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 603,000      
Buildings and Improvements [5] 6,228,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,831,000      
Accumulated Depreciation [5] $ 4,542,000      
Year Acquired [5] 1994      
Year Constructed [5] 1975      
Industrial [Member] | Exchange Distribution Center 2 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 300,000      
Buildings and Improvements [5] 945,000      
Costs Capitalized Subsequent to Acquisition [5] 555,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 300,000      
Buildings and Improvements [5] 1,500,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,800,000      
Accumulated Depreciation [5] $ 1,165,000      
Year Acquired [5] 2002      
Year Constructed [5] 1976      
Industrial [Member] | Exchange Distribution Center 3 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 320,000      
Buildings and Improvements [5] 997,000      
Costs Capitalized Subsequent to Acquisition [5] 554,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 320,000      
Buildings and Improvements [5] 1,551,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,871,000      
Accumulated Depreciation [5] $ 1,158,000      
Year Acquired [5] 2002      
Year Constructed [5] 1980      
Industrial [Member] | Sunbelt Distribution Center [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,472,000      
Buildings and Improvements [5] 5,745,000      
Costs Capitalized Subsequent to Acquisition [5] 8,537,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,472,000      
Buildings and Improvements [5] 14,282,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,754,000      
Accumulated Depreciation [5] $ 11,320,000      
Year Acquired [5] 1989/97/98      
Year Constructed [5] 1974/87/97/98      
Industrial [Member] | John Young Commerce Center 1 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 497,000      
Buildings and Improvements [5] 2,444,000      
Costs Capitalized Subsequent to Acquisition [5] 2,039,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 497,000      
Buildings and Improvements [5] 4,483,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,980,000      
Accumulated Depreciation [5] $ 3,356,000      
Year Acquired [5] 1997/98      
Year Constructed [5] 1997/98      
Industrial [Member] | John Young Commerce Center 2 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 512,000      
Buildings and Improvements [5] 3,613,000      
Costs Capitalized Subsequent to Acquisition [5] 875,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 512,000      
Buildings and Improvements [5] 4,488,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,000,000      
Accumulated Depreciation [5] $ 3,463,000      
Year Acquired [5] 1998      
Year Constructed [5] 1999      
Industrial [Member] | Sunport Center 1 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 555,000      
Buildings and Improvements [5] 1,977,000      
Costs Capitalized Subsequent to Acquisition [5] 1,387,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 555,000      
Buildings and Improvements [5] 3,364,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,919,000      
Accumulated Depreciation [5] $ 2,457,000      
Year Acquired [5] 1999      
Year Constructed [5] 1999      
Industrial [Member] | Sunport Center 2 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 597,000      
Buildings and Improvements [5] 3,271,000      
Costs Capitalized Subsequent to Acquisition [5] 2,313,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 597,000      
Buildings and Improvements [5] 5,584,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,181,000      
Accumulated Depreciation [5] $ 4,502,000      
Year Acquired [5] 1999      
Year Constructed [5] 2001      
Industrial [Member] | Sunport Center 3 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 642,000      
Buildings and Improvements [5] 3,121,000      
Costs Capitalized Subsequent to Acquisition [5] 1,519,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 642,000      
Buildings and Improvements [5] 4,640,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,282,000      
Accumulated Depreciation [5] $ 3,339,000      
Year Acquired [5] 1999      
Year Constructed [5] 2002      
Industrial [Member] | Sunport Center 4 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 642,000      
Buildings and Improvements [5] 2,917,000      
Costs Capitalized Subsequent to Acquisition [5] 2,554,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 642,000      
Buildings and Improvements [5] 5,471,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,113,000      
Accumulated Depreciation [5] $ 4,007,000      
Year Acquired [5] 1999      
Year Constructed [5] 2004      
Industrial [Member] | Sunport Center 5 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 750,000      
Buildings and Improvements [5] 2,509,000      
Costs Capitalized Subsequent to Acquisition [5] 4,163,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 750,000      
Buildings and Improvements [5] 6,672,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,422,000      
Accumulated Depreciation [5] $ 4,350,000      
Year Acquired [5] 1999      
Year Constructed [5] 2005      
Industrial [Member] | Sunport Center 6 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 672,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,821,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 672,000      
Buildings and Improvements [5] 3,821,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,493,000      
Accumulated Depreciation [5] $ 2,247,000      
Year Acquired [5] 1999      
Year Constructed [5] 2006      
Industrial [Member] | Southridge Commerce Park 1 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 373,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,702,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 373,000      
Buildings and Improvements [5] 5,702,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,075,000      
Accumulated Depreciation [5] $ 3,910,000      
Year Acquired [5] 2003      
Year Constructed [5] 2006      
Industrial [Member] | Southridge Commerce Park 2 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 342,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,180,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 342,000      
Buildings and Improvements [5] 5,180,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,522,000      
Accumulated Depreciation [5] $ 3,142,000      
Year Acquired [5] 2003      
Year Constructed [5] 2007      
Industrial [Member] | Southridge Commerce Park 3 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 547,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,118,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 547,000      
Buildings and Improvements [5] 6,118,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,665,000      
Accumulated Depreciation [5] $ 3,397,000      
Year Acquired [5] 2003      
Year Constructed [5] 2007      
Industrial [Member] | Southridge Commerce Park 4 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 506,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,168,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 506,000      
Buildings and Improvements [5] 5,168,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,674,000      
Accumulated Depreciation [5] $ 2,989,000      
Year Acquired [5] 2003      
Year Constructed [5] 2006      
Industrial [Member] | Southridge Commerce Park 5 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 382,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,382,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 382,000      
Buildings and Improvements [5] 5,382,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,764,000      
Accumulated Depreciation [5] $ 3,112,000      
Year Acquired [5] 2003      
Year Constructed [5] 2006      
Industrial [Member] | Southridge Commerce Park 6 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 571,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,369,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 571,000      
Buildings and Improvements [5] 6,369,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,940,000      
Accumulated Depreciation [5] $ 3,463,000      
Year Acquired [5] 2003      
Year Constructed [5] 2007      
Industrial [Member] | Southridge Commerce Park 7 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 520,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,124,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 520,000      
Buildings and Improvements [5] 7,124,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,644,000      
Accumulated Depreciation [5] $ 3,901,000      
Year Acquired [5] 2003      
Year Constructed [5] 2008      
Industrial [Member] | Southridge Commerce Park 8 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 531,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,808,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 531,000      
Buildings and Improvements [5] 6,808,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,339,000      
Accumulated Depreciation [5] $ 3,276,000      
Year Acquired [5] 2003      
Year Constructed [5] 2008      
Industrial [Member] | Southridge Commerce Park 9 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 468,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,524,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 468,000      
Buildings and Improvements [5] 6,524,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,992,000      
Accumulated Depreciation [5] $ 3,115,000      
Year Acquired [5] 2003      
Year Constructed [5] 2012      
Industrial [Member] | Southridge Commerce Park 10 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 414,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,972,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 414,000      
Buildings and Improvements [5] 4,972,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,386,000      
Accumulated Depreciation [5] $ 1,942,000      
Year Acquired [5] 2003      
Year Constructed [5] 2012      
Industrial [Member] | Southridge Commerce Park 11 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 513,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,008,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 513,000      
Buildings and Improvements [5] 6,008,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,521,000      
Accumulated Depreciation [5] $ 2,467,000      
Year Acquired [5] 2003      
Year Constructed [5] 2012      
Industrial [Member] | Southridge Commerce Park 12 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,025,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 19,686,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,025,000      
Buildings and Improvements [5] 19,686,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 21,711,000      
Accumulated Depreciation [5] $ 8,365,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Horizon Commerce Park 1 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 991,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,020,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 991,000      
Buildings and Improvements [5] 7,020,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,011,000      
Accumulated Depreciation [5] $ 2,706,000      
Year Acquired [5] 2008      
Year Constructed [5] 2014      
Industrial [Member] | Horizon Commerce Park 2 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,111,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,861,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,111,000      
Buildings and Improvements [5] 7,861,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,972,000      
Accumulated Depreciation [5] $ 2,955,000      
Year Acquired [5] 2008      
Year Constructed [5] 2014      
Industrial [Member] | Horizon Commerce Park 3 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 991,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,695,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 991,000      
Buildings and Improvements [5] 6,695,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,686,000      
Accumulated Depreciation [5] $ 2,110,000      
Year Acquired [5] 2008      
Year Constructed [5] 2016      
Industrial [Member] | Horizon Commerce Park 4 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,097,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,584,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,097,000      
Buildings and Improvements [5] 8,584,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,681,000      
Accumulated Depreciation [5] $ 3,214,000      
Year Acquired [5] 2008      
Year Constructed [5] 2015      
Industrial [Member] | Horizon Commerce Park 5 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,108,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,654,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,108,000      
Buildings and Improvements [5] 8,654,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,762,000      
Accumulated Depreciation [5] $ 2,616,000      
Year Acquired [5] 2008      
Year Constructed [5] 2017      
Industrial [Member] | Horizon Commerce Park 6 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,099,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 11,363,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,099,000      
Buildings and Improvements [5] 11,363,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,462,000      
Accumulated Depreciation [5] $ 2,862,000      
Year Acquired [5] 2008      
Year Constructed [5] 2019      
Industrial [Member] | Horizon Commerce Park 7 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 962,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,248,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 962,000      
Buildings and Improvements [5] 8,248,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,210,000      
Accumulated Depreciation [5] $ 2,629,000      
Year Acquired [5] 2008      
Year Constructed [5] 2017      
Industrial [Member] | Horizon Commerce Park 8 & 9 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,590,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 16,695,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,590,000      
Buildings and Improvements [5] 16,695,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 18,285,000      
Accumulated Depreciation [5] $ 3,532,000      
Year Acquired [5] 2008      
Year Constructed [5] 2019      
Industrial [Member] | Horizon Commerce Park 10 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 846,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,731,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 846,000      
Buildings and Improvements [5] 6,731,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,577,000      
Accumulated Depreciation [5] $ 1,586,000      
Year Acquired [5] 2009      
Year Constructed [5] 2018      
Industrial [Member] | Horizon Commerce Park 11 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,101,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,014,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,101,000      
Buildings and Improvements [5] 10,014,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,115,000      
Accumulated Depreciation [5] $ 2,326,000      
Year Acquired [5] 2009      
Year Constructed [5] 2019      
Industrial [Member] | Horizon Commerce Park 12 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,416,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,776,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,416,000      
Buildings and Improvements [5] 10,776,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,192,000      
Accumulated Depreciation [5] $ 3,094,000      
Year Acquired [5] 2009      
Year Constructed [5] 2017      
Industrial [Member] | Horizon West 1 | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,326,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 11,082,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,326,000      
Buildings and Improvements [5] 11,082,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,408,000      
Accumulated Depreciation [5] $ 936,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | Horizon West 2 & 3 | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,895,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 16,033,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,895,000      
Buildings and Improvements [5] 16,033,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 18,928,000      
Accumulated Depreciation [5] $ 2,627,000      
Year Acquired [5] 2020      
Year Constructed [5] 2021      
Industrial [Member] | Horizon West 4 | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,047,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 23,993,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,047,000      
Buildings and Improvements [5] 23,993,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 28,040,000      
Accumulated Depreciation [5] $ 2,228,000      
Year Acquired [5] 2020      
Year Constructed [5] 2022      
Industrial [Member] | Horizon West 5 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,165,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,367,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,165,000      
Buildings and Improvements [5] 9,367,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,532,000      
Accumulated Depreciation [5] $ 19,000      
Year Acquired [5] 2020      
Year Constructed [5] 2024      
Industrial [Member] | Horizon West 6 | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,188,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 11,133,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,188,000      
Buildings and Improvements [5] 11,133,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,321,000      
Accumulated Depreciation [5] $ 588,000      
Year Acquired [5] 2020      
Year Constructed [5] 2024      
Industrial [Member] | Horizon West 10 [Member] | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,904,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 37,607,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,905,000      
Buildings and Improvements [5] 37,606,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 42,511,000      
Accumulated Depreciation [5] $ 2,352,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | MCO Logistics Center | Orlando [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,769,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 17,949,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,771,000      
Buildings and Improvements [5] 17,947,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,718,000      
Accumulated Depreciation [5] $ 1,057,000      
Year Acquired [5] 2022      
Year Constructed [5] 2024      
Industrial [Member] | Deerwood Distribution Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,147,000      
Buildings and Improvements [5] 1,799,000      
Costs Capitalized Subsequent to Acquisition [5] 7,211,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,147,000      
Buildings and Improvements [5] 9,010,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,157,000      
Accumulated Depreciation [5] $ 6,508,000      
Year Acquired [5] 1989      
Year Constructed [5] 1978      
Industrial [Member] | Phillips Distribution Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,375,000      
Buildings and Improvements [5] 2,961,000      
Costs Capitalized Subsequent to Acquisition [5] 6,758,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,375,000      
Buildings and Improvements [5] 9,719,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,094,000      
Accumulated Depreciation [5] $ 7,319,000      
Year Acquired [5] 1994      
Year Constructed [5] 1984/95      
Industrial [Member] | Lake Pointe Business Park [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,442,000      
Buildings and Improvements [5] 6,450,000      
Costs Capitalized Subsequent to Acquisition [5] 13,839,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,442,000      
Buildings and Improvements [5] 20,289,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 23,731,000      
Accumulated Depreciation [5] $ 16,456,000      
Year Acquired [5] 1993      
Year Constructed [5] 1986/87      
Industrial [Member] | Ellis Distribution Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 540,000      
Buildings and Improvements [5] 7,513,000      
Costs Capitalized Subsequent to Acquisition [5] 5,069,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 540,000      
Buildings and Improvements [5] 12,582,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,122,000      
Accumulated Depreciation [5] $ 8,042,000      
Year Acquired [5] 1997      
Year Constructed [5] 1977      
Industrial [Member] | Westside Distribution Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,011,000      
Buildings and Improvements [5] 15,374,000      
Costs Capitalized Subsequent to Acquisition [5] 12,076,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,011,000      
Buildings and Improvements [5] 27,450,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 29,461,000      
Accumulated Depreciation [5] $ 18,816,000      
Year Acquired [5] 1997/2008      
Year Constructed [5] 1984/85      
Industrial [Member] | Beach Commerce Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 476,000      
Buildings and Improvements [5] 1,899,000      
Costs Capitalized Subsequent to Acquisition [5] 1,173,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 476,000      
Buildings and Improvements [5] 3,072,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,548,000      
Accumulated Depreciation [5] $ 2,190,000      
Year Acquired [5] 2000      
Year Constructed [5] 2000      
Industrial [Member] | Interstate Distribution Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,879,000      
Buildings and Improvements [5] 5,700,000      
Costs Capitalized Subsequent to Acquisition [5] 2,859,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,879,000      
Buildings and Improvements [5] 8,559,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,438,000      
Accumulated Depreciation [5] $ 5,971,000      
Year Acquired [5] 2005      
Year Constructed [5] 1990      
Industrial [Member] | Flagler Center [Member] | Jacksonville [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,317,000      
Buildings and Improvements [5] 14,912,000      
Costs Capitalized Subsequent to Acquisition [5] 3,387,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,317,000      
Buildings and Improvements [5] 18,299,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,616,000      
Accumulated Depreciation [5] $ 5,341,000      
Year Acquired [5] 2016      
Year Constructed [5] 1997 & 2005      
Industrial [Member] | Linpro Commerce Center [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 613,000      
Buildings and Improvements [5] 2,243,000      
Costs Capitalized Subsequent to Acquisition [5] 4,494,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 616,000      
Buildings and Improvements [5] 6,734,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,350,000      
Accumulated Depreciation [5] $ 5,878,000      
Year Acquired [5] 1996      
Year Constructed [5] 1986      
Industrial [Member] | Lockhart Distribution Center [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 3,489,000      
Costs Capitalized Subsequent to Acquisition [5] 3,897,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 7,386,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 2,412,000      
Total [5] 9,798,000      
Accumulated Depreciation [5] $ 6,222,000      
Year Acquired [5] 1997      
Year Constructed [5] 1986      
Industrial [Member] | Interstate Commerce Center [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 485,000      
Buildings and Improvements [5] 2,652,000      
Costs Capitalized Subsequent to Acquisition [5] 2,327,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 485,000      
Buildings and Improvements [5] 4,979,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,464,000      
Accumulated Depreciation [5] $ 3,819,000      
Year Acquired [5] 1998      
Year Constructed [5] 1988      
Industrial [Member] | Executive Airport Distribution Center [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,991,000      
Buildings and Improvements [5] 4,857,000      
Costs Capitalized Subsequent to Acquisition [5] 6,768,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,991,000      
Buildings and Improvements [5] 11,625,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,616,000      
Accumulated Depreciation [5] $ 7,160,000      
Year Acquired [5] 2001      
Year Constructed [5] 2004/06      
Industrial [Member] | Sample 95 Business Park [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,202,000      
Buildings and Improvements [5] 8,785,000      
Costs Capitalized Subsequent to Acquisition [5] 5,650,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,202,000      
Buildings and Improvements [5] 14,435,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,637,000      
Accumulated Depreciation [5] $ 11,261,000      
Year Acquired [5] 1996/98      
Year Constructed [5] 1990/99      
Industrial [Member] | Blue Heron Distribution Center [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 975,000      
Buildings and Improvements [5] 3,626,000      
Costs Capitalized Subsequent to Acquisition [5] 4,294,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 975,000      
Buildings and Improvements [5] 7,920,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,895,000      
Accumulated Depreciation [5] $ 5,453,000      
Year Acquired [5] 1999      
Year Constructed [5] 1986      
Industrial [Member] | Blue Heron Distribution Center 2 [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,385,000      
Buildings and Improvements [5] 4,222,000      
Costs Capitalized Subsequent to Acquisition [5] 2,642,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,385,000      
Buildings and Improvements [5] 6,864,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,249,000      
Accumulated Depreciation [5] $ 4,341,000      
Year Acquired [5] 2004      
Year Constructed [5] 1988      
Industrial [Member] | Blue Heron Distribution Center 3 | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 450,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,152,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 450,000      
Buildings and Improvements [5] 3,152,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,602,000      
Accumulated Depreciation [5] $ 1,607,000      
Year Acquired [5] 2004      
Year Constructed [5] 2009      
Industrial [Member] | Weston Commerce Park [Member] | Fort Lauderdale/Palm Beach area [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,163,000      
Buildings and Improvements [5] 9,951,000      
Costs Capitalized Subsequent to Acquisition [5] 2,130,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,163,000      
Buildings and Improvements [5] 12,081,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,244,000      
Accumulated Depreciation [5] $ 3,279,000      
Year Acquired [5] 2016      
Year Constructed [5] 1998      
Industrial [Member] | SunCoast Commerce Center 1 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 911,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,571,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 928,000      
Buildings and Improvements [5] 5,554,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,482,000      
Accumulated Depreciation [5] $ 2,778,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | SunCoast Commerce Center 2 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 911,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,718,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 928,000      
Buildings and Improvements [5] 5,701,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,629,000      
Accumulated Depreciation [5] $ 2,973,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | SunCoast Commerce Center 3 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,720,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,434,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,763,000      
Buildings and Improvements [5] 7,391,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,154,000      
Accumulated Depreciation [5] $ 3,642,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | SunCoast Commerce Center 4 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,733,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,278,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,762,000      
Buildings and Improvements [5] 8,249,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,011,000      
Accumulated Depreciation [5] $ 2,344,000      
Year Acquired [5] 2006      
Year Constructed [5] 2017      
Industrial [Member] | SunCoast Commerce Center 5 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,511,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,911,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,594,000      
Buildings and Improvements [5] 6,828,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,422,000      
Accumulated Depreciation [5] $ 2,053,000      
Year Acquired [5] 2006      
Year Constructed [5] 2019      
Industrial [Member] | SunCoast Commerce Center 6 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,537,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,537,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,594,000      
Buildings and Improvements [5] 7,480,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,074,000      
Accumulated Depreciation [5] $ 1,795,000      
Year Acquired [5] 2006      
Year Constructed [5] 2019      
Industrial [Member] | SunCoast Commerce Center 7 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,533,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,193,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,533,000      
Buildings and Improvements [5] 7,193,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,726,000      
Accumulated Depreciation [5] $ 1,264,000      
Year Acquired [5] 2006      
Year Constructed [5] 2020      
Industrial [Member] | Suncoast Commerce Center 8 [Member] | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,533,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,863,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,533,000      
Buildings and Improvements [5] 6,863,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,396,000      
Accumulated Depreciation [5] $ 1,719,000      
Year Acquired [5] 2006      
Year Constructed [5] 2020      
Industrial [Member] | SunCoast Commerce Center 9 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,011,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,375,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,011,000      
Buildings and Improvements [5] 15,375,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,386,000      
Accumulated Depreciation [5] $ 408,000      
Year Acquired [5] 2020      
Year Constructed [5] 2024      
Industrial [Member] | SunCoast Commerce Center 10 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 732,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 12,571,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 732,000      
Buildings and Improvements [5] 12,571,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,303,000      
Accumulated Depreciation [5] $ 864,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | SunCoast Commerce Center 11 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 785,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,038,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 785,000      
Buildings and Improvements [5] 9,038,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,823,000      
Accumulated Depreciation [5] $ 967,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | SunCoast Commerce Center 12 | Fort Myers [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 785,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,840,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 785,000      
Buildings and Improvements [5] 7,840,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,625,000      
Accumulated Depreciation [5] $ 833,000      
Year Acquired [5] 2020      
Year Constructed [5] 2022      
Industrial [Member] | Gateway Commerce Park 1 [Member] | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,746,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 18,012,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,746,000      
Buildings and Improvements [5] 18,012,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 23,758,000      
Accumulated Depreciation [5] $ 5,189,000      
Year Acquired [5] 2016      
Year Constructed [5] 2018      
Industrial [Member] | Gateway Commerce Park 2 | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,224,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 19,249,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,224,000      
Buildings and Improvements [5] 19,249,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 22,473,000      
Accumulated Depreciation [5] $ 1,864,000      
Year Acquired [5] 2016      
Year Constructed [5] 2023      
Industrial [Member] | Gateway Commerce Park 3 | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,491,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,133,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,176,000      
Buildings and Improvements [5] 15,448,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 18,624,000      
Accumulated Depreciation [5] $ 1,750,000      
Year Acquired [5] 2016      
Year Constructed [5] 2022      
Industrial [Member] | Gateway Commerce Park 4 | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,711,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 19,727,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,711,000      
Buildings and Improvements [5] 19,727,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,438,000      
Accumulated Depreciation [5] $ 3,122,000      
Year Acquired [5] 2016      
Year Constructed [5] 2020      
Industrial [Member] | Gateway Commerce Park 5 [Member] | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,746,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 18,526,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,357,000      
Buildings and Improvements [5] 18,915,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,272,000      
Accumulated Depreciation [5] $ 5,027,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | Gateway South Date 1 & 2 | Miami [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,700,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 27,811,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,700,000      
Buildings and Improvements [5] 27,811,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 34,511,000      
Accumulated Depreciation [5] $ 384,000      
Year Acquired [5] 2022      
Year Constructed [5] 2024      
Industrial [Member] | Wiegman Distribution Center 1 [Member] | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,197,000      
Buildings and Improvements [5] 8,788,000      
Costs Capitalized Subsequent to Acquisition [5] 5,230,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,308,000      
Buildings and Improvements [5] 13,907,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,215,000      
Accumulated Depreciation [5] $ 9,196,000      
Year Acquired [5] 1996      
Year Constructed [5] 1986/87      
Industrial [Member] | Wiegman Distribution Center 2 [Member] | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,579,000      
Buildings and Improvements [5] 4,316,000      
Costs Capitalized Subsequent to Acquisition [5] 860,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,579,000      
Buildings and Improvements [5] 5,176,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,755,000      
Accumulated Depreciation [5] $ 1,916,000      
Year Acquired [5] 2012      
Year Constructed [5] 1998      
Industrial [Member] | Huntwood Distribution Center [Member] | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,842,000      
Buildings and Improvements [5] 15,368,000      
Costs Capitalized Subsequent to Acquisition [5] 5,215,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,842,000      
Buildings and Improvements [5] 20,583,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,425,000      
Accumulated Depreciation [5] $ 15,560,000      
Year Acquired [5] 1996      
Year Constructed [5] 1988      
Industrial [Member] | San Clemente Distribution Center [Member] | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 893,000      
Buildings and Improvements [5] 2,004,000      
Costs Capitalized Subsequent to Acquisition [5] 1,000,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 893,000      
Buildings and Improvements [5] 3,004,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,897,000      
Accumulated Depreciation [5] $ 2,400,000      
Year Acquired [5] 1997      
Year Constructed [5] 1978      
Industrial [Member] | Yosemite Distribution Center [Member] | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 259,000      
Buildings and Improvements [5] 7,058,000      
Costs Capitalized Subsequent to Acquisition [5] 3,462,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 731,000      
Buildings and Improvements [5] 10,048,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,779,000      
Accumulated Depreciation [5] $ 6,718,000      
Year Acquired [5] 1999      
Year Constructed [5] 1974/87      
Industrial [Member] | 6th Street Business Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,438,000      
Buildings and Improvements [5] 9,513,000      
Costs Capitalized Subsequent to Acquisition [5] 105,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,438,000      
Buildings and Improvements [5] 9,618,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,056,000      
Accumulated Depreciation [5] $ 941,000      
Year Acquired [5] 2022      
Year Constructed [5] 1966      
Industrial [Member] | Benicia Distribution Center 1 | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,632,000      
Buildings and Improvements [5] 36,362,000      
Costs Capitalized Subsequent to Acquisition [5] 2,663,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,632,000      
Buildings and Improvements [5] 39,025,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 45,657,000      
Accumulated Depreciation [5] $ 3,925,000      
Year Acquired [5] 2022      
Year Constructed [5] 2005      
Industrial [Member] | Benicia Distribution Center 2 | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,027,000      
Buildings and Improvements [5] 36,679,000      
Costs Capitalized Subsequent to Acquisition [5] 3,529,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,027,000      
Buildings and Improvements [5] 40,208,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 47,235,000      
Accumulated Depreciation [5] $ 4,054,000      
Year Acquired [5] 2022      
Year Constructed [5] 2001      
Industrial [Member] | Benicia Distribution Center 3 | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,136,000      
Buildings and Improvements [5] 9,792,000      
Costs Capitalized Subsequent to Acquisition [5] 384,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,136,000      
Buildings and Improvements [5] 10,176,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,312,000      
Accumulated Depreciation [5] $ 1,088,000      
Year Acquired [5] 2022      
Year Constructed [5] 1998      
Industrial [Member] | Benicia Distribution Center 4 | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,191,000      
Buildings and Improvements [5] 12,993,000      
Costs Capitalized Subsequent to Acquisition [5] 1,065,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,191,000      
Buildings and Improvements [5] 14,058,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,249,000      
Accumulated Depreciation [5] $ 1,523,000      
Year Acquired [5] 2022      
Year Constructed [5] 1979      
Industrial [Member] | Benicia Distribution Center 5 | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,161,000      
Buildings and Improvements [5] 16,885,000      
Costs Capitalized Subsequent to Acquisition [5] 323,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,161,000      
Buildings and Improvements [5] 17,208,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 20,369,000      
Accumulated Depreciation [5] $ 1,751,000      
Year Acquired [5] 2022      
Year Constructed [5] 2007      
Industrial [Member] | Preston Distribution Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,261,000      
Buildings and Improvements [5] 33,833,000      
Costs Capitalized Subsequent to Acquisition [5] 1,736,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,261,000      
Buildings and Improvements [5] 35,569,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 42,830,000      
Accumulated Depreciation [5] $ 3,796,000      
Year Acquired [5] 2022      
Year Constructed [5] 1998      
Industrial [Member] | Sinclair Distrubtion Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 12,488,000      
Buildings and Improvements [5] 27,259,000      
Costs Capitalized Subsequent to Acquisition [5] 735,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 12,488,000      
Buildings and Improvements [5] 27,994,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 40,482,000      
Accumulated Depreciation [5] $ 2,814,000      
Year Acquired [5] 2022      
Year Constructed [5] 1983      
Industrial [Member] | Transit Distribution Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 21,317,000      
Buildings and Improvements [5] 10,635,000      
Costs Capitalized Subsequent to Acquisition [5] 1,221,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 21,317,000      
Buildings and Improvements [5] 11,856,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 33,173,000      
Accumulated Depreciation [5] $ 1,342,000      
Year Acquired [5] 2022      
Year Constructed [5] 1971      
Industrial [Member] | Whipple Business Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 17,984,000      
Buildings and Improvements [5] 15,344,000      
Costs Capitalized Subsequent to Acquisition [5] 1,466,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 17,984,000      
Buildings and Improvements [5] 16,810,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 34,794,000      
Accumulated Depreciation [5] $ 1,951,000      
Year Acquired [5] 2022      
Year Constructed [5] 1986      
Industrial [Member] | Zephyr Distribution Center | San Francisco area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 18,033,000      
Buildings and Improvements [5] 10,602,000      
Costs Capitalized Subsequent to Acquisition [5] 806,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 18,033,000      
Buildings and Improvements [5] 11,408,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 29,441,000      
Accumulated Depreciation [5] $ 1,552,000      
Year Acquired [5] 2022      
Year Constructed [5] 1991      
Industrial [Member] | Eucalyptus Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 11,392,000      
Buildings and Improvements [5] 11,498,000      
Costs Capitalized Subsequent to Acquisition [5] 978,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 11,392,000      
Buildings and Improvements [5] 12,476,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 23,868,000      
Accumulated Depreciation [5] $ 2,957,000      
Year Acquired [5] 2018      
Year Constructed [5] 1988      
Industrial [Member] | Kingsview Industrial Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 643,000      
Buildings and Improvements [5] 2,573,000      
Costs Capitalized Subsequent to Acquisition [5] 1,456,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 643,000      
Buildings and Improvements [5] 4,029,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,672,000      
Accumulated Depreciation [5] $ 2,869,000      
Year Acquired [5] 1996      
Year Constructed [5] 1980      
Industrial [Member] | Dominguez Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,006,000      
Buildings and Improvements [5] 8,025,000      
Costs Capitalized Subsequent to Acquisition [5] 4,650,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,006,000      
Buildings and Improvements [5] 12,675,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,681,000      
Accumulated Depreciation [5] $ 9,488,000      
Year Acquired [5] 1996      
Year Constructed [5] 1977      
Industrial [Member] | Main Street Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,606,000      
Buildings and Improvements [5] 4,103,000      
Costs Capitalized Subsequent to Acquisition [5] 1,320,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,606,000      
Buildings and Improvements [5] 5,423,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,029,000      
Accumulated Depreciation [5] $ 3,975,000      
Year Acquired [5] 1999      
Year Constructed [5] 1999      
Industrial [Member] | Walnut Business Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,885,000      
Buildings and Improvements [5] 5,274,000      
Costs Capitalized Subsequent to Acquisition [5] 3,732,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,885,000      
Buildings and Improvements [5] 9,006,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,891,000      
Accumulated Depreciation [5] $ 6,919,000      
Year Acquired [5] 1996      
Year Constructed [5] 1966/90      
Industrial [Member] | Washington Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,636,000      
Buildings and Improvements [5] 4,900,000      
Costs Capitalized Subsequent to Acquisition [5] 1,612,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,636,000      
Buildings and Improvements [5] 6,512,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,148,000      
Accumulated Depreciation [5] $ 4,457,000      
Year Acquired [5] 1997      
Year Constructed [5] 1996/97      
Industrial [Member] | Chino Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,544,000      
Buildings and Improvements [5] 10,175,000      
Costs Capitalized Subsequent to Acquisition [5] 2,151,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,544,000      
Buildings and Improvements [5] 12,326,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,870,000      
Accumulated Depreciation [5] $ 11,139,000      
Year Acquired [5] 1998      
Year Constructed [5] 1980      
Industrial [Member] | Ramona Distribution Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,761,000      
Buildings and Improvements [5] 5,751,000      
Costs Capitalized Subsequent to Acquisition [5] 1,008,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,761,000      
Buildings and Improvements [5] 6,759,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,520,000      
Accumulated Depreciation [5] $ 1,850,000      
Year Acquired [5] 2014      
Year Constructed [5] 1984      
Industrial [Member] | Industry Distribution Center 1 [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 10,230,000      
Buildings and Improvements [5] 12,373,000      
Costs Capitalized Subsequent to Acquisition [5] 4,015,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 8,881,000      
Buildings and Improvements [5] 17,737,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 26,618,000      
Accumulated Depreciation [5] $ 13,744,000      
Year Acquired [5] 1998      
Year Constructed [5] 1959      
Industrial [Member] | Industry Distribution Center 3 [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 3,012,000      
Costs Capitalized Subsequent to Acquisition [5] 1,209,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,349,000      
Buildings and Improvements [5] 2,872,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,221,000      
Accumulated Depreciation [5] $ 2,866,000      
Year Acquired [5] 2007      
Year Constructed [5] 1992      
Industrial [Member] | Chestnut Business Center [Member] | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,674,000      
Buildings and Improvements [5] 3,465,000      
Costs Capitalized Subsequent to Acquisition [5] 1,523,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,674,000      
Buildings and Improvements [5] 4,988,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,662,000      
Accumulated Depreciation [5] $ 3,014,000      
Year Acquired [5] 1998      
Year Constructed [5] 1999      
Industrial [Member] | Rancho Distribution Center | Los Angeles area [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 16,180,000      
Buildings and Improvements [5] 11,140,000      
Costs Capitalized Subsequent to Acquisition [5] 828,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 16,180,000      
Buildings and Improvements [5] 11,968,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 28,148,000      
Accumulated Depreciation [5] $ 2,039,000      
Year Acquired [5] 2020      
Year Constructed [5] 2006      
Industrial [Member] | Shaw Commerce Center [Member] | Fresno [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,465,000      
Buildings and Improvements [5] 11,627,000      
Costs Capitalized Subsequent to Acquisition [5] 13,760,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,465,000      
Buildings and Improvements [5] 25,387,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 27,852,000      
Accumulated Depreciation [5] $ 16,743,000      
Year Acquired [5] 1998      
Year Constructed [5] 1978/81/87      
Industrial [Member] | Eastlake Distribution Center [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,046,000      
Buildings and Improvements [5] 6,888,000      
Costs Capitalized Subsequent to Acquisition [5] 3,935,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,046,000      
Buildings and Improvements [5] 10,823,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,869,000      
Accumulated Depreciation [5] $ 7,434,000      
Year Acquired [5] 1997      
Year Constructed [5] 1989      
Industrial [Member] | Miramar | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 13,980,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 29,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 13,981,000      
Buildings and Improvements [5] 28,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,009,000      
Accumulated Depreciation [5] $ 7,000      
Year Acquired [5] 2019      
Year Constructed [5] n/a      
Industrial [Member] | Ocean View Corporate Center [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,577,000      
Buildings and Improvements [5] 7,105,000      
Costs Capitalized Subsequent to Acquisition [5] 2,090,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,577,000      
Buildings and Improvements [5] 9,195,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,772,000      
Accumulated Depreciation [5] $ 5,110,000      
Year Acquired [5] 2010      
Year Constructed [5] 2005      
Industrial [Member] | Rocky Point Distribution Center 1 [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 8,857,000      
Buildings and Improvements [5] 13,388,000      
Costs Capitalized Subsequent to Acquisition [5] 349,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 8,857,000      
Buildings and Improvements [5] 13,737,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 22,594,000      
Accumulated Depreciation [5] $ 3,309,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Rocky Point Distribution Center 2 [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,623,000      
Buildings and Improvements [5] 11,614,000      
Costs Capitalized Subsequent to Acquisition [5] 1,628,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,623,000      
Buildings and Improvements [5] 13,242,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 20,865,000      
Accumulated Depreciation [5] $ 2,461,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Siempre Viva Distribution Center 1 [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,628,000      
Buildings and Improvements [5] 9,211,000      
Costs Capitalized Subsequent to Acquisition [5] 469,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,628,000      
Buildings and Improvements [5] 9,680,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,308,000      
Accumulated Depreciation [5] $ 2,032,000      
Year Acquired [5] 2018      
Year Constructed [5] 2003      
Industrial [Member] | Siempre Viva Distribution Center 2 [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,868,000      
Buildings and Improvements [5] 5,694,000      
Costs Capitalized Subsequent to Acquisition [5] 1,144,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,877,000      
Buildings and Improvements [5] 6,829,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,706,000      
Accumulated Depreciation [5] $ 1,077,000      
Year Acquired [5] 2019      
Year Constructed [5] 2002      
Industrial [Member] | Siempre Viva Distribution Center 3-6 [Member] | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 31,815,000      
Buildings and Improvements [5] 100,861,000      
Costs Capitalized Subsequent to Acquisition [5] 739,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 31,815,000      
Buildings and Improvements [5] 101,600,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 133,415,000      
Accumulated Depreciation [5] $ 13,035,000      
Year Acquired [5] 2021      
Year Constructed [5] 2001-2003      
Industrial [Member] | Speed Distribution Center | San Diego [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 15,282,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 57,130,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 15,114,000      
Buildings and Improvements [5] 57,298,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 72,412,000      
Accumulated Depreciation [5] $ 6,163,000      
Year Acquired [5] 2019      
Year Constructed [5] 2022      
Industrial [Member] | Cebrian Distribution Center | Sacramento [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,360,000      
Buildings and Improvements [5] 13,488,000      
Costs Capitalized Subsequent to Acquisition [5] 659,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,360,000      
Buildings and Improvements [5] 14,147,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,507,000      
Accumulated Depreciation [5] $ 1,750,000      
Year Acquired [5] 2022      
Year Constructed [5] 1975      
Industrial [Member] | Reed Distribution Center | Sacramento [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,887,000      
Buildings and Improvements [5] 28,195,000      
Costs Capitalized Subsequent to Acquisition [5] 1,500,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,887,000      
Buildings and Improvements [5] 29,695,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 35,582,000      
Accumulated Depreciation [5] $ 3,289,000      
Year Acquired [5] 2022      
Year Constructed [5] 1990      
Industrial [Member] | Park at Myatt | Nashville [Member] | TENNESSEE        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,463,000      
Buildings and Improvements [5] 27,813,000      
Costs Capitalized Subsequent to Acquisition [5] 2,049,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,463,000      
Buildings and Improvements [5] 29,862,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 32,325,000      
Accumulated Depreciation [5] $ 2,424,000      
Year Acquired [5] 2023      
Year Constructed [5] 2022      
Industrial [Member] | Allen Station 1 & 2 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,815,000      
Buildings and Improvements [5] 17,612,000      
Costs Capitalized Subsequent to Acquisition [5] 2,559,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,815,000      
Buildings and Improvements [5] 20,171,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,986,000      
Accumulated Depreciation [5] $ 6,477,000      
Year Acquired [5] 2018      
Year Constructed [5] 2001      
Industrial [Member] | Interstate Warehouse 1 and 2 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,746,000      
Buildings and Improvements [5] 4,941,000      
Costs Capitalized Subsequent to Acquisition [5] 5,156,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,746,000      
Buildings and Improvements [5] 10,097,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,843,000      
Accumulated Depreciation [5] $ 8,634,000      
Year Acquired [5] 1988      
Year Constructed [5] 1978      
Industrial [Member] | Interstate Warehouse 3 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 519,000      
Buildings and Improvements [5] 2,008,000      
Costs Capitalized Subsequent to Acquisition [5] 1,997,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 519,000      
Buildings and Improvements [5] 4,005,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,524,000      
Accumulated Depreciation [5] $ 3,043,000      
Year Acquired [5] 2000      
Year Constructed [5] 1979      
Industrial [Member] | Interstate Warehouse 4 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 416,000      
Buildings and Improvements [5] 2,481,000      
Costs Capitalized Subsequent to Acquisition [5] 955,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 416,000      
Buildings and Improvements [5] 3,436,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,852,000      
Accumulated Depreciation [5] $ 2,393,000      
Year Acquired [5] 2004      
Year Constructed [5] 2002      
Industrial [Member] | Interstate Warehouse 5, 6, & 7 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,824,000      
Buildings and Improvements [5] 4,106,000      
Costs Capitalized Subsequent to Acquisition [5] 2,999,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,824,000      
Buildings and Improvements [5] 7,105,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,929,000      
Accumulated Depreciation [5] $ 5,067,000      
Year Acquired [5] 2009      
Year Constructed [5] 1979/80/81      
Industrial [Member] | LakePort 1-3 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,984,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 22,689,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,984,000      
Buildings and Improvements [5] 22,689,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,673,000      
Accumulated Depreciation [5] $ 5,317,000      
Year Acquired [5] 2018      
Year Constructed [5] 2020      
Industrial [Member] | Lakeport 4 & 5 | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,716,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 21,610,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,716,000      
Buildings and Improvements [5] 21,610,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,326,000      
Accumulated Depreciation [5] $ 2,495,000      
Year Acquired [5] 2018      
Year Constructed [5] 2023      
Industrial [Member] | Logistics Center 6 & 7 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 12,605,000      
Costs Capitalized Subsequent to Acquisition [5] 3,260,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 15,865,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 1,279,000      
Total [5] 17,144,000      
Accumulated Depreciation [5] $ 4,088,000      
Year Acquired [5] 2019      
Year Constructed [5] 2018      
Industrial [Member] | Venture Warehouses [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,452,000      
Buildings and Improvements [5] 3,762,000      
Costs Capitalized Subsequent to Acquisition [5] 3,353,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,452,000      
Buildings and Improvements [5] 7,115,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,567,000      
Accumulated Depreciation [5] $ 6,554,000      
Year Acquired [5] 1988      
Year Constructed [5] 1979      
Industrial [Member] | ParkView Commerce Center 1-3 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,663,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 19,261,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,663,000      
Buildings and Improvements [5] 19,261,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 21,924,000      
Accumulated Depreciation [5] $ 6,815,000      
Year Acquired [5] 2014      
Year Constructed [5] 2015      
Industrial [Member] | Shady Trail Distribution Center [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 635,000      
Buildings and Improvements [5] 3,621,000      
Costs Capitalized Subsequent to Acquisition [5] 1,609,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 635,000      
Buildings and Improvements [5] 5,230,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,865,000      
Accumulated Depreciation [5] $ 3,644,000      
Year Acquired [5] 2003      
Year Constructed [5] 1998      
Industrial [Member] | Valwood Distribution Center [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,361,000      
Buildings and Improvements [5] 34,405,000      
Costs Capitalized Subsequent to Acquisition [5] 6,579,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,361,000      
Buildings and Improvements [5] 40,984,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 45,345,000      
Accumulated Depreciation [5] $ 18,178,000      
Year Acquired [5] 2012      
Year Constructed [5] 1986/87/97/98      
Industrial [Member] | Northfield Distribution Center [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 12,470,000      
Buildings and Improvements [5] 50,713,000      
Costs Capitalized Subsequent to Acquisition [5] 11,777,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 12,471,000      
Buildings and Improvements [5] 62,489,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 74,960,000      
Accumulated Depreciation [5] $ 27,947,000      
Year Acquired [5] 2013      
Year Constructed [5] 1999-2001/03/04/08      
Industrial [Member] | CreekView 1&2 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,275,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,075,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,275,000      
Buildings and Improvements [5] 15,075,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 18,350,000      
Accumulated Depreciation [5] $ 5,299,000      
Year Acquired [5] 2015      
Year Constructed [5] 2017      
Industrial [Member] | CreekView 3 & 4 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,600,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,906,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,600,000      
Buildings and Improvements [5] 13,906,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,506,000      
Accumulated Depreciation [5] $ 4,695,000      
Year Acquired [5] 2015      
Year Constructed [5] 2018      
Industrial [Member] | CreekView 5 & 6 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,682,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,403,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,681,000      
Buildings and Improvements [5] 13,404,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,085,000      
Accumulated Depreciation [5] $ 3,986,000      
Year Acquired [5] 2016      
Year Constructed [5] 2020      
Industrial [Member] | CreekView 7 & 8 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,640,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,737,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,640,000      
Buildings and Improvements [5] 15,737,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 18,377,000      
Accumulated Depreciation [5] $ 3,340,000      
Year Acquired [5] 2016      
Year Constructed [5] 2020      
Industrial [Member] | CreekView 9 & 10 | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,985,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 12,389,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,987,000      
Buildings and Improvements [5] 12,387,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,374,000      
Accumulated Depreciation [5] $ 1,481,000      
Year Acquired [5] 2020      
Year Constructed [5] 2022      
Industrial [Member] | The Rock at Star Business Park | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,296,000      
Buildings and Improvements [5] 27,223,000      
Costs Capitalized Subsequent to Acquisition [5] 324,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,296,000      
Buildings and Improvements [5] 27,547,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 32,843,000      
Accumulated Depreciation [5] $ 7,690,000      
Year Acquired [5] 2020      
Year Constructed [5] 2019      
Industrial [Member] | DFW Global Logistics Centre 1-4 [Member] | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 86,564,000      
Costs Capitalized Subsequent to Acquisition [5] 2,368,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 88,932,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 9,474,000      
Total [5] 98,406,000      
Accumulated Depreciation [5] $ 13,236,000      
Year Acquired [5] 2021      
Year Constructed [5] 2014/15      
Industrial [Member] | DFW Global Logistics Centre 5-8 | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 75,259,000      
Costs Capitalized Subsequent to Acquisition [5] 771,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 76,030,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 9,790,000      
Total [5] 85,820,000      
Accumulated Depreciation [5] $ 3,024,000      
Year Acquired [5] 2024      
Year Constructed [5] 2017/20      
Industrial [Member] | McKinney 1 & 2 | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,419,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 24,136,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,419,000      
Buildings and Improvements [5] 24,136,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 27,555,000      
Accumulated Depreciation [5] $ 1,599,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | McKinney 3 & 4 | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,228,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 22,729,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,228,000      
Buildings and Improvements [5] 22,729,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 26,957,000      
Accumulated Depreciation [5] $ 3,138,000      
Year Acquired [5] 2020      
Year Constructed [5] 2022      
Industrial [Member] | McKinney Logistics Center | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,899,000      
Buildings and Improvements [5] 18,216,000      
Costs Capitalized Subsequent to Acquisition [5] 73,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,899,000      
Buildings and Improvements [5] 18,289,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,188,000      
Accumulated Depreciation [5] $ 1,788,000      
Year Acquired [5] 2023      
Year Constructed [5] 2022      
Industrial [Member] | McKinney Airport Trade Center | Dallas [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 15,565,000      
Buildings and Improvements [5] 44,502,000      
Costs Capitalized Subsequent to Acquisition [5] 3,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 15,565,000      
Buildings and Improvements [5] 44,505,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 60,070,000      
Accumulated Depreciation [5] $ 494,000      
Year Acquired [5] 2025      
Year Constructed [5] 2023      
Industrial [Member] | Arlington Tech Centre 1 & 2 [Member] | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,510,000      
Buildings and Improvements [5] 10,096,000      
Costs Capitalized Subsequent to Acquisition [5] 3,711,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,515,000      
Buildings and Improvements [5] 13,802,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,317,000      
Accumulated Depreciation [5] $ 3,202,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Arlington Tech Centre 3 | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,725,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,408,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,725,000      
Buildings and Improvements [5] 8,408,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,133,000      
Accumulated Depreciation [5] $ 746,000      
Year Acquired [5] 2020      
Year Constructed [5] 2023      
Industrial [Member] | Basswood 1 & 2 | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,086,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 20,431,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,087,000      
Buildings and Improvements [5] 20,430,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,517,000      
Accumulated Depreciation [5] $ 3,109,000      
Year Acquired [5] 2019      
Year Constructed [5] 2022      
Industrial [Member] | Basswood 3-5 | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,671,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 44,347,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,672,000      
Buildings and Improvements [5] 44,346,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 50,018,000      
Accumulated Depreciation [5] $ 1,911,000      
Year Acquired [5] 2019      
Year Constructed [5] 2024      
Industrial [Member] | Parc North 1-4 [Member] | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,615,000      
Buildings and Improvements [5] 26,358,000      
Costs Capitalized Subsequent to Acquisition [5] 10,179,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,615,000      
Buildings and Improvements [5] 36,537,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 41,152,000      
Accumulated Depreciation [5] $ 11,623,000      
Year Acquired [5] 2016      
Year Constructed [5] 2016      
Industrial [Member] | Parc North 5 [Member] | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,286,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,339,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,286,000      
Buildings and Improvements [5] 8,339,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,625,000      
Accumulated Depreciation [5] $ 2,317,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | Parc North 6 [Member] | Fort Worth [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,233,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,776,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,233,000      
Buildings and Improvements [5] 9,776,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,009,000      
Accumulated Depreciation [5] $ 2,687,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | World Houston Intl Business Ctr 1 and 2 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 660,000      
Buildings and Improvements [5] 5,893,000      
Costs Capitalized Subsequent to Acquisition [5] 3,458,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 660,000      
Buildings and Improvements [5] 9,351,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,011,000      
Accumulated Depreciation [5] $ 6,521,000      
Year Acquired [5] 1998      
Year Constructed [5] 1996      
Industrial [Member] | World Houston Intl Business Ctr 3 and 4 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 820,000      
Buildings and Improvements [5] 5,130,000      
Costs Capitalized Subsequent to Acquisition [5] 1,353,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 707,000      
Buildings and Improvements [5] 6,596,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,303,000      
Accumulated Depreciation [5] $ 4,695,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | World Houston Intl Business Ctr 6 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 425,000      
Buildings and Improvements [5] 2,423,000      
Costs Capitalized Subsequent to Acquisition [5] 1,076,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 425,000      
Buildings and Improvements [5] 3,499,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,924,000      
Accumulated Depreciation [5] $ 2,489,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | World Houston Intl Business Ctr 7 and 8 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 680,000      
Buildings and Improvements [5] 4,584,000      
Costs Capitalized Subsequent to Acquisition [5] 6,256,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 680,000      
Buildings and Improvements [5] 10,840,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,520,000      
Accumulated Depreciation [5] $ 7,967,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | World Houston Intl Business Ctr 9 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 800,000      
Buildings and Improvements [5] 4,355,000      
Costs Capitalized Subsequent to Acquisition [5] 3,069,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 800,000      
Buildings and Improvements [5] 7,424,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,224,000      
Accumulated Depreciation [5] $ 4,818,000      
Year Acquired [5] 1998      
Year Constructed [5] 1998      
Industrial [Member] | World Houston Intl Business Ctr 10 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 933,000      
Buildings and Improvements [5] 4,779,000      
Costs Capitalized Subsequent to Acquisition [5] 1,252,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 933,000      
Buildings and Improvements [5] 6,031,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,964,000      
Accumulated Depreciation [5] $ 3,935,000      
Year Acquired [5] 2001      
Year Constructed [5] 1999      
Industrial [Member] | World Houston Intl Business Ctr 11 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 638,000      
Buildings and Improvements [5] 3,764,000      
Costs Capitalized Subsequent to Acquisition [5] 1,832,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 638,000      
Buildings and Improvements [5] 5,596,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,234,000      
Accumulated Depreciation [5] $ 4,011,000      
Year Acquired [5] 1999      
Year Constructed [5] 1999      
Industrial [Member] | World Houston Intl Business Ctr 12 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 340,000      
Buildings and Improvements [5] 2,419,000      
Costs Capitalized Subsequent to Acquisition [5] 969,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 340,000      
Buildings and Improvements [5] 3,388,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,728,000      
Accumulated Depreciation [5] $ 2,162,000      
Year Acquired [5] 2000      
Year Constructed [5] 2002      
Industrial [Member] | World Houston Intl Business Ctr 13 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 282,000      
Buildings and Improvements [5] 2,569,000      
Costs Capitalized Subsequent to Acquisition [5] 1,150,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 282,000      
Buildings and Improvements [5] 3,719,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,001,000      
Accumulated Depreciation [5] $ 2,746,000      
Year Acquired [5] 2000      
Year Constructed [5] 2002      
Industrial [Member] | World Houston Intl Business Ctr 14 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 722,000      
Buildings and Improvements [5] 2,629,000      
Costs Capitalized Subsequent to Acquisition [5] 1,796,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 722,000      
Buildings and Improvements [5] 4,425,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,147,000      
Accumulated Depreciation [5] $ 3,234,000      
Year Acquired [5] 2000      
Year Constructed [5] 2003      
Industrial [Member] | World Houston Intl Business Ctr 15 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 249,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 2,888,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 249,000      
Buildings and Improvements [5] 2,888,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,137,000      
Accumulated Depreciation [5] $ 1,874,000      
Year Acquired [5] 2000      
Year Constructed [5] 2007      
Industrial [Member] | World Houston Intl Business Ctr 16 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 519,000      
Buildings and Improvements [5] 4,248,000      
Costs Capitalized Subsequent to Acquisition [5] 2,575,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 519,000      
Buildings and Improvements [5] 6,823,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,342,000      
Accumulated Depreciation [5] $ 4,469,000      
Year Acquired [5] 2000      
Year Constructed [5] 2005      
Industrial [Member] | World Houston Intl Business Ctr 17 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 373,000      
Buildings and Improvements [5] 1,945,000      
Costs Capitalized Subsequent to Acquisition [5] 1,072,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 373,000      
Buildings and Improvements [5] 3,017,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,390,000      
Accumulated Depreciation [5] $ 1,889,000      
Year Acquired [5] 2000      
Year Constructed [5] 2004      
Industrial [Member] | World Houston Intl Business Ctr 19 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 373,000      
Buildings and Improvements [5] 2,256,000      
Costs Capitalized Subsequent to Acquisition [5] 1,711,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 373,000      
Buildings and Improvements [5] 3,967,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,340,000      
Accumulated Depreciation [5] $ 2,653,000      
Year Acquired [5] 2000      
Year Constructed [5] 2004      
Industrial [Member] | World Houston Intl Business Ctr 20 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,008,000      
Buildings and Improvements [5] 1,948,000      
Costs Capitalized Subsequent to Acquisition [5] 2,277,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,008,000      
Buildings and Improvements [5] 4,225,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,233,000      
Accumulated Depreciation [5] $ 3,292,000      
Year Acquired [5] 2000      
Year Constructed [5] 2004      
Industrial [Member] | World Houston Intl Business Ctr 21 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 436,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,243,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 436,000      
Buildings and Improvements [5] 4,243,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,679,000      
Accumulated Depreciation [5] $ 2,663,000      
Year Acquired [5] 2000/03      
Year Constructed [5] 2006      
Industrial [Member] | World Houston Intl Business Ctr 22 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 436,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,671,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 436,000      
Buildings and Improvements [5] 4,671,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,107,000      
Accumulated Depreciation [5] $ 2,917,000      
Year Acquired [5] 2000      
Year Constructed [5] 2007      
Industrial [Member] | World Houston Intl Business Ctr 24 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 837,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,831,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 838,000      
Buildings and Improvements [5] 6,830,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,668,000      
Accumulated Depreciation [5] $ 4,002,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | World Houston Intl Business Ctr 25 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 508,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,656,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 508,000      
Buildings and Improvements [5] 4,656,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,164,000      
Accumulated Depreciation [5] $ 2,730,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | World Houston Intl Business Ctr 26 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 445,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,541,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 445,000      
Buildings and Improvements [5] 3,541,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,986,000      
Accumulated Depreciation [5] $ 1,788,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | World Houston Intl Business Ctr 27 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 837,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,797,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 838,000      
Buildings and Improvements [5] 5,796,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,634,000      
Accumulated Depreciation [5] $ 3,416,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | World Houston Intl Business Ctr 28 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 550,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,836,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 550,000      
Buildings and Improvements [5] 4,836,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,386,000      
Accumulated Depreciation [5] $ 2,911,000      
Year Acquired [5] 2005      
Year Constructed [5] 2009      
Industrial [Member] | World Houston Intl Business Ctr 29 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 782,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,212,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 974,000      
Buildings and Improvements [5] 4,020,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,994,000      
Accumulated Depreciation [5] $ 2,069,000      
Year Acquired [5] 2007      
Year Constructed [5] 2009      
Industrial [Member] | World Houston Intl Business Ctr 30 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 981,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,543,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,222,000      
Buildings and Improvements [5] 6,302,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,524,000      
Accumulated Depreciation [5] $ 3,422,000      
Year Acquired [5] 2007      
Year Constructed [5] 2009      
Industrial [Member] | World Houston Intl Business Ctr 31 Member | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 684,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,843,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 684,000      
Buildings and Improvements [5] 4,843,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,527,000      
Accumulated Depreciation [5] $ 2,567,000      
Year Acquired [5] 2008      
Year Constructed [5] 2011      
Industrial [Member] | World Houston Intl Business Ctr 31B [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 546,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,781,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 546,000      
Buildings and Improvements [5] 3,781,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,327,000      
Accumulated Depreciation [5] $ 1,942,000      
Year Acquired [5] 2008      
Year Constructed [5] 2012      
Industrial [Member] | World Houston Intl Business Ctr 32 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,225,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,734,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,526,000      
Buildings and Improvements [5] 5,433,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,959,000      
Accumulated Depreciation [5] $ 2,508,000      
Year Acquired [5] 2007      
Year Constructed [5] 2012      
Industrial [Member] | World Houston 33 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,166,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,285,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,166,000      
Buildings and Improvements [5] 8,285,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,451,000      
Accumulated Depreciation [5] $ 3,512,000      
Year Acquired [5] 2011      
Year Constructed [5] 2013      
Industrial [Member] | World Houston 34 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 439,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,589,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 439,000      
Buildings and Improvements [5] 3,589,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,028,000      
Accumulated Depreciation [5] $ 1,483,000      
Year Acquired [5] 2005      
Year Constructed [5] 2012      
Industrial [Member] | World Houston 35 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 340,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 2,585,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 340,000      
Buildings and Improvements [5] 2,585,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,925,000      
Accumulated Depreciation [5] $ 996,000      
Year Acquired [5] 2005      
Year Constructed [5] 2012      
Industrial [Member] | World Houston 36 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 684,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,106,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 684,000      
Buildings and Improvements [5] 5,106,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,790,000      
Accumulated Depreciation [5] $ 2,291,000      
Year Acquired [5] 2011      
Year Constructed [5] 2013      
Industrial [Member] | World Houston 37 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 759,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,074,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 759,000      
Buildings and Improvements [5] 7,074,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,833,000      
Accumulated Depreciation [5] $ 3,039,000      
Year Acquired [5] 2011      
Year Constructed [5] 2013      
Industrial [Member] | World Houston 38 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,053,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,961,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,053,000      
Buildings and Improvements [5] 7,961,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,014,000      
Accumulated Depreciation [5] $ 3,574,000      
Year Acquired [5] 2011      
Year Constructed [5] 2013      
Industrial [Member] | World Houston 39 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 620,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,482,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 621,000      
Buildings and Improvements [5] 5,481,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,102,000      
Accumulated Depreciation [5] $ 1,934,000      
Year Acquired [5] 2011      
Year Constructed [5] 2014      
Industrial [Member] | World Houston 40 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,072,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,359,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,072,000      
Buildings and Improvements [5] 9,359,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,431,000      
Accumulated Depreciation [5] $ 3,426,000      
Year Acquired [5] 2011      
Year Constructed [5] 2014      
Industrial [Member] | World Houston 41 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 649,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,151,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 649,000      
Buildings and Improvements [5] 6,151,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,800,000      
Accumulated Depreciation [5] $ 2,306,000      
Year Acquired [5] 2011      
Year Constructed [5] 2014      
Industrial [Member] | World Houston 42 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 571,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,884,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 571,000      
Buildings and Improvements [5] 4,884,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,455,000      
Accumulated Depreciation [5] $ 1,570,000      
Year Acquired [5] 2011      
Year Constructed [5] 2015      
Industrial [Member] | World Houston 43 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 443,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,189,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 443,000      
Buildings and Improvements [5] 6,189,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,632,000      
Accumulated Depreciation [5] $ 1,594,000      
Year Acquired [5] 2011      
Year Constructed [5] 2019      
Industrial [Member] | World Houston 44 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 653,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,561,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 653,000      
Buildings and Improvements [5] 8,561,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,214,000      
Accumulated Depreciation [5] $ 1,809,000      
Year Acquired [5] 2011      
Year Constructed [5] 2020      
Industrial [Member] | World Houston 45 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,243,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,745,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,243,000      
Buildings and Improvements [5] 13,745,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,988,000      
Accumulated Depreciation [5] $ 2,932,000      
Year Acquired [5] 2015      
Year Constructed [5] 2019      
Industrial [Member] | World Houston 47 | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,798,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 14,438,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,798,000      
Buildings and Improvements [5] 14,438,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,236,000      
Accumulated Depreciation [5] $ 1,439,000      
Year Acquired [5] 2015      
Year Constructed [5] 2022      
Industrial [Member] | Glenmont Business Park [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 936,000      
Buildings and Improvements [5] 6,161,000      
Costs Capitalized Subsequent to Acquisition [5] 3,832,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 937,000      
Buildings and Improvements [5] 9,992,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,929,000      
Accumulated Depreciation [5] $ 7,402,000      
Year Acquired [5] 1998      
Year Constructed [5] 1999/2000      
Industrial [Member] | Beltway Crossing 1 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 458,000      
Buildings and Improvements [5] 5,712,000      
Costs Capitalized Subsequent to Acquisition [5] 3,512,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 458,000      
Buildings and Improvements [5] 9,224,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,682,000      
Accumulated Depreciation [5] $ 6,699,000      
Year Acquired [5] 2002      
Year Constructed [5] 2001      
Industrial [Member] | Beltway Crossing 2 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 415,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,339,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 415,000      
Buildings and Improvements [5] 3,339,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,754,000      
Accumulated Depreciation [5] $ 2,016,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | Beltway Crossing 3 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 460,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,775,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 460,000      
Buildings and Improvements [5] 3,775,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,235,000      
Accumulated Depreciation [5] $ 2,111,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Beltway Crossing 4 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 460,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,430,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 460,000      
Buildings and Improvements [5] 3,430,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,890,000      
Accumulated Depreciation [5] $ 2,094,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Beltway Crossing 5 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 701,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,508,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 701,000      
Buildings and Improvements [5] 5,508,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,209,000      
Accumulated Depreciation [5] $ 3,299,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Beltway Crossing 6 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 618,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,580,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 618,000      
Buildings and Improvements [5] 6,580,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,198,000      
Accumulated Depreciation [5] $ 3,378,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Beltway Crossing 7 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 765,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,662,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 765,000      
Buildings and Improvements [5] 6,662,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,427,000      
Accumulated Depreciation [5] $ 3,584,000      
Year Acquired [5] 2005      
Year Constructed [5] 2009      
Industrial [Member] | Beltway Crossing 8 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 721,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,931,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 721,000      
Buildings and Improvements [5] 5,931,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,652,000      
Accumulated Depreciation [5] $ 3,232,000      
Year Acquired [5] 2005      
Year Constructed [5] 2011      
Industrial [Member] | Beltway Crossing 9 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 418,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 2,152,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 418,000      
Buildings and Improvements [5] 2,152,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,570,000      
Accumulated Depreciation [5] $ 917,000      
Year Acquired [5] 2007      
Year Constructed [5] 2012      
Industrial [Member] | Beltway Crossing 10 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 733,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,146,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 733,000      
Buildings and Improvements [5] 4,146,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,879,000      
Accumulated Depreciation [5] $ 1,755,000      
Year Acquired [5] 2007      
Year Constructed [5] 2012      
Industrial [Member] | Beltway Crossing 11 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 690,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,605,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 690,000      
Buildings and Improvements [5] 4,605,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,295,000      
Accumulated Depreciation [5] $ 1,876,000      
Year Acquired [5] 2007      
Year Constructed [5] 2013      
Industrial [Member] | West Road 1 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 621,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,336,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 541,000      
Buildings and Improvements [5] 4,416,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,957,000      
Accumulated Depreciation [5] $ 1,797,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | West Road 2 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 981,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,969,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 854,000      
Buildings and Improvements [5] 5,096,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,950,000      
Accumulated Depreciation [5] $ 1,924,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | West Road 3 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 597,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,391,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 520,000      
Buildings and Improvements [5] 4,468,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,988,000      
Accumulated Depreciation [5] $ 1,478,000      
Year Acquired [5] 2012      
Year Constructed [5] 2015      
Industrial [Member] | West Road 4 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 621,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,833,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 541,000      
Buildings and Improvements [5] 4,913,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,454,000      
Accumulated Depreciation [5] $ 1,867,000      
Year Acquired [5] 2012      
Year Constructed [5] 2015      
Industrial [Member] | West Road 5 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 484,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,512,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 421,000      
Buildings and Improvements [5] 4,575,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,996,000      
Accumulated Depreciation [5] $ 1,596,000      
Year Acquired [5] 2012      
Year Constructed [5] 2018      
Industrial [Member] | Ten West Crossing 1 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 566,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,144,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 566,000      
Buildings and Improvements [5] 3,144,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,710,000      
Accumulated Depreciation [5] $ 1,414,000      
Year Acquired [5] 2012      
Year Constructed [5] 2013      
Industrial [Member] | Ten West Crossing 2 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 829,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,705,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 833,000      
Buildings and Improvements [5] 4,701,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,534,000      
Accumulated Depreciation [5] $ 2,297,000      
Year Acquired [5] 2012      
Year Constructed [5] 2013      
Industrial [Member] | Ten West Crossing 3 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 609,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,564,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 613,000      
Buildings and Improvements [5] 4,560,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,173,000      
Accumulated Depreciation [5] $ 2,027,000      
Year Acquired [5] 2012      
Year Constructed [5] 2013      
Industrial [Member] | Ten West Crossing 4 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 694,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,648,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 699,000      
Buildings and Improvements [5] 4,643,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,342,000      
Accumulated Depreciation [5] $ 1,957,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | Ten West Crossing 5 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 933,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,345,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 940,000      
Buildings and Improvements [5] 6,338,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,278,000      
Accumulated Depreciation [5] $ 2,485,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | Ten West Crossing 6 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 640,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,750,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 644,000      
Buildings and Improvements [5] 4,746,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,390,000      
Accumulated Depreciation [5] $ 1,978,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | Ten West Crossing 7 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 584,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,545,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 589,000      
Buildings and Improvements [5] 5,540,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,129,000      
Accumulated Depreciation [5] $ 2,351,000      
Year Acquired [5] 2012      
Year Constructed [5] 2015      
Industrial [Member] | Ten West Crossing 8 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,126,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,550,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,135,000      
Buildings and Improvements [5] 9,541,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,676,000      
Accumulated Depreciation [5] $ 2,919,000      
Year Acquired [5] 2012      
Year Constructed [5] 2019      
Industrial [Member] | Northwest Crossing 1-3 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,665,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 20,466,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,665,000      
Buildings and Improvements [5] 20,466,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 26,131,000      
Accumulated Depreciation [5] $ 4,374,000      
Year Acquired [5] 2019      
Year Constructed [5] 2020      
Industrial [Member] | Grand West Crossing 1 | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,733,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,978,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,726,000      
Buildings and Improvements [5] 10,985,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,711,000      
Accumulated Depreciation [5] $ 1,041,000      
Year Acquired [5] 2019      
Year Constructed [5] 2022      
Industrial [Member] | Cypress Preserve 1 & 2 | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 9,952,000      
Buildings and Improvements [5] 43,457,000      
Costs Capitalized Subsequent to Acquisition [5] 1,993,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 9,952,000      
Buildings and Improvements [5] 45,450,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 55,402,000      
Accumulated Depreciation [5] $ 5,668,000      
Year Acquired [5] 2022      
Year Constructed [5] 2019      
Industrial [Member] | Springwood Business Park 1 & 2 [Member] | Houston [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,208,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 28,556,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,214,000      
Buildings and Improvements [5] 28,550,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 34,764,000      
Accumulated Depreciation [5] $ 1,589,000      
Year Acquired [5] 2021      
Year Constructed [5] 2023      
Industrial [Member] | Butterfield Trail [Member] | El Paso [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 20,725,000      
Costs Capitalized Subsequent to Acquisition [5] 11,062,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 31,787,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 2,276,000      
Total [5] 34,063,000      
Accumulated Depreciation [5] $ 25,645,000      
Year Acquired [5] 1997/2000      
Year Constructed [5] 1987/95      
Industrial [Member] | Rojas Commerce Park [Member] | El Paso [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 900,000      
Buildings and Improvements [5] 3,659,000      
Costs Capitalized Subsequent to Acquisition [5] 5,245,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 900,000      
Buildings and Improvements [5] 8,904,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,804,000      
Accumulated Depreciation [5] $ 6,402,000      
Year Acquired [5] 1999      
Year Constructed [5] 1986      
Industrial [Member] | Americas Ten Business Center 1 [Member] | El Paso [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 526,000      
Buildings and Improvements [5] 2,778,000      
Costs Capitalized Subsequent to Acquisition [5] 1,709,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 526,000      
Buildings and Improvements [5] 4,487,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,013,000      
Accumulated Depreciation [5] $ 3,097,000      
Year Acquired [5] 2001      
Year Constructed [5] 2003      
Industrial [Member] | Americas Ten Business Center 2 | El Paso [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,516,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 11,847,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,518,000      
Buildings and Improvements [5] 11,845,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,363,000      
Accumulated Depreciation [5] $ 1,479,000      
Year Acquired [5] 2020      
Year Constructed [5] 2022      
Industrial [Member] | Alamo Downs Distribution Center [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,342,000      
Buildings and Improvements [5] 6,338,000      
Costs Capitalized Subsequent to Acquisition [5] 5,349,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,342,000      
Buildings and Improvements [5] 11,687,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,029,000      
Accumulated Depreciation [5] $ 7,049,000      
Year Acquired [5] 2004      
Year Constructed [5] 1986/2002      
Industrial [Member] | Arion Business Park 1-13, 15 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,143,000      
Buildings and Improvements [5] 31,432,000      
Costs Capitalized Subsequent to Acquisition [5] 12,482,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,143,000      
Buildings and Improvements [5] 43,914,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 48,057,000      
Accumulated Depreciation [5] $ 28,264,000      
Year Acquired [5] 2005      
Year Constructed [5] 1988-2000/06      
Industrial [Member] | Arion 14 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 423,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,996,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 423,000      
Buildings and Improvements [5] 3,996,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,419,000      
Accumulated Depreciation [5] $ 2,580,000      
Year Acquired [5] 2005      
Year Constructed [5] 2006      
Industrial [Member] | Arion 16 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 427,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,924,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 427,000      
Buildings and Improvements [5] 3,924,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,351,000      
Accumulated Depreciation [5] $ 2,224,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | Arion 17 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 616,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,622,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 616,000      
Buildings and Improvements [5] 4,622,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,238,000      
Accumulated Depreciation [5] $ 3,238,000      
Year Acquired [5] 2005      
Year Constructed [5] 2007      
Industrial [Member] | Arion 18 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 418,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 2,596,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 418,000      
Buildings and Improvements [5] 2,596,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,014,000      
Accumulated Depreciation [5] $ 1,529,000      
Year Acquired [5] 2005      
Year Constructed [5] 2008      
Industrial [Member] | Wetmore Business Center 1-4 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,494,000      
Buildings and Improvements [5] 10,804,000      
Costs Capitalized Subsequent to Acquisition [5] 5,091,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,494,000      
Buildings and Improvements [5] 15,895,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,389,000      
Accumulated Depreciation [5] $ 10,589,000      
Year Acquired [5] 2005      
Year Constructed [5] 1998/99      
Industrial [Member] | Wetmore Business Center 5 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 412,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,153,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 412,000      
Buildings and Improvements [5] 4,153,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,565,000      
Accumulated Depreciation [5] $ 2,543,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | Wetmore Business Center 6 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 505,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,784,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 505,000      
Buildings and Improvements [5] 4,784,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,289,000      
Accumulated Depreciation [5] $ 2,538,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | Wetmore Business Center 7 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 546,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,466,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 546,000      
Buildings and Improvements [5] 5,466,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,012,000      
Accumulated Depreciation [5] $ 3,354,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | Wetmore Business Center 8 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,056,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,346,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,056,000      
Buildings and Improvements [5] 9,346,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,402,000      
Accumulated Depreciation [5] $ 4,872,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | Fairgrounds Business Park [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,644,000      
Buildings and Improvements [5] 8,209,000      
Costs Capitalized Subsequent to Acquisition [5] 3,226,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,644,000      
Buildings and Improvements [5] 11,435,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,079,000      
Accumulated Depreciation [5] $ 7,358,000      
Year Acquired [5] 2007      
Year Constructed [5] 1985/86      
Industrial [Member] | Rittiman Distribution Center [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,083,000      
Buildings and Improvements [5] 6,649,000      
Costs Capitalized Subsequent to Acquisition [5] 2,059,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,083,000      
Buildings and Improvements [5] 8,708,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,791,000      
Accumulated Depreciation [5] $ 3,323,000      
Year Acquired [5] 2011      
Year Constructed [5] 2000      
Industrial [Member] | Thousand Oaks 1 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 607,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,792,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 607,000      
Buildings and Improvements [5] 5,792,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,399,000      
Accumulated Depreciation [5] $ 3,004,000      
Year Acquired [5] 2008      
Year Constructed [5] 2012      
Industrial [Member] | Thousand Oaks 2 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 794,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,918,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 794,000      
Buildings and Improvements [5] 4,918,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,712,000      
Accumulated Depreciation [5] $ 2,205,000      
Year Acquired [5] 2008      
Year Constructed [5] 2012      
Industrial [Member] | Thousand Oaks 3 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 772,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,721,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 772,000      
Buildings and Improvements [5] 4,721,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,493,000      
Accumulated Depreciation [5] $ 2,131,000      
Year Acquired [5] 2008      
Year Constructed [5] 2013      
Industrial [Member] | Thousand Oaks 4 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 753,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,962,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 753,000      
Buildings and Improvements [5] 5,962,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,715,000      
Accumulated Depreciation [5] $ 2,061,000      
Year Acquired [5] 2013      
Year Constructed [5] 2015      
Industrial [Member] | Alamo Ridge 1 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 623,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,815,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 623,000      
Buildings and Improvements [5] 8,815,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,438,000      
Accumulated Depreciation [5] $ 3,902,000      
Year Acquired [5] 2007      
Year Constructed [5] 2015      
Industrial [Member] | Alamo Ridge 2 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 402,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,432,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 402,000      
Buildings and Improvements [5] 5,432,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,834,000      
Accumulated Depreciation [5] $ 2,274,000      
Year Acquired [5] 2007      
Year Constructed [5] 2015      
Industrial [Member] | Alamo Ridge 3 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 907,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,207,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 907,000      
Buildings and Improvements [5] 10,207,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,114,000      
Accumulated Depreciation [5] $ 3,249,000      
Year Acquired [5] 2007      
Year Constructed [5] 2017      
Industrial [Member] | Alamo Ridge 4 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 354,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,900,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 355,000      
Buildings and Improvements [5] 7,899,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,254,000      
Accumulated Depreciation [5] $ 3,170,000      
Year Acquired [5] 2007      
Year Constructed [5] 2017      
Industrial [Member] | Eisenhauer Point 1 & 2 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,881,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,458,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,881,000      
Buildings and Improvements [5] 15,458,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,339,000      
Accumulated Depreciation [5] $ 5,774,000      
Year Acquired [5] 2015      
Year Constructed [5] 2016      
Industrial [Member] | Eisenhauer Point 3 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 577,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,541,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 577,000      
Buildings and Improvements [5] 6,541,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,118,000      
Accumulated Depreciation [5] $ 2,273,000      
Year Acquired [5] 2015      
Year Constructed [5] 2017      
Industrial [Member] | Eisenhauer Point 4 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 555,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,959,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 555,000      
Buildings and Improvements [5] 4,959,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,514,000      
Accumulated Depreciation [5] $ 1,573,000      
Year Acquired [5] 2015      
Year Constructed [5] 2017      
Industrial [Member] | Eisenhauer Point 5 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 818,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,383,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 818,000      
Buildings and Improvements [5] 7,383,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,201,000      
Accumulated Depreciation [5] $ 2,203,000      
Year Acquired [5] 2015      
Year Constructed [5] 2018      
Industrial [Member] | Eisenhauer Point 6 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 569,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,910,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 569,000      
Buildings and Improvements [5] 4,910,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,479,000      
Accumulated Depreciation [5] $ 1,181,000      
Year Acquired [5] 2015      
Year Constructed [5] 2018      
Industrial [Member] | Eisenhauer Point 7 & 8 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,000,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 22,792,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,593,000      
Buildings and Improvements [5] 21,199,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 23,792,000      
Accumulated Depreciation [5] $ 5,755,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | Eisenhauer Point 9 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 632,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,753,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 632,000      
Buildings and Improvements [5] 5,753,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,385,000      
Accumulated Depreciation [5] $ 1,286,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | Eisenhauer Point Business Park 10-12 | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,894,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 23,748,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,894,000      
Buildings and Improvements [5] 23,748,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 28,642,000      
Accumulated Depreciation [5] $ 1,015,000      
Year Acquired [5] 2022      
Year Constructed [5] 2024      
Industrial [Member] | Tri-County Crossing 1 & 2 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,623,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,245,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,623,000      
Buildings and Improvements [5] 15,245,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,868,000      
Accumulated Depreciation [5] $ 4,838,000      
Year Acquired [5] 2017      
Year Constructed [5] 2019      
Industrial [Member] | Tri-County Crossing 3 & 4 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,733,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 14,742,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,733,000      
Buildings and Improvements [5] 14,742,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 16,475,000      
Accumulated Depreciation [5] $ 3,950,000      
Year Acquired [5] 2017      
Year Constructed [5] 2020      
Industrial [Member] | Tri-County Crossing 5 | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 871,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,401,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 871,000      
Buildings and Improvements [5] 10,401,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,272,000      
Accumulated Depreciation [5] $ 1,703,000      
Year Acquired [5] 2017      
Year Constructed [5] 2022      
Industrial [Member] | Tri-County Crossing 6 | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,033,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,642,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,033,000      
Buildings and Improvements [5] 9,642,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,675,000      
Accumulated Depreciation [5] $ 1,644,000      
Year Acquired [5] 2017      
Year Constructed [5] 2022      
Industrial [Member] | Ridgeview 1 & 2 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,004,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 18,924,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,004,000      
Buildings and Improvements [5] 18,924,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 20,928,000      
Accumulated Depreciation [5] $ 4,674,000      
Year Acquired [5] 2018      
Year Constructed [5] 2020      
Industrial [Member] | Ridgeview 3 | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 839,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,564,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 839,000      
Buildings and Improvements [5] 8,564,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,403,000      
Accumulated Depreciation [5] $ 1,087,000      
Year Acquired [5] 2018      
Year Constructed [5] 2022      
Industrial [Member] | Northeast Trade Center 1 [Member] | San Antonio [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,412,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 26,402,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,412,000      
Buildings and Improvements [5] 26,402,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 28,814,000      
Accumulated Depreciation [5] $ 741,000      
Year Acquired [5] 2023      
Year Constructed [5] 2025      
Industrial [Member] | 45 Crossing | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 10,028,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 15,813,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 10,028,000      
Buildings and Improvements [5] 15,813,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,841,000      
Accumulated Depreciation [5] $ 1,827,000      
Year Acquired [5] 2021      
Year Constructed [5] 2022      
Industrial [Member] | Colorado Crossing Distribution Center [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,602,000      
Buildings and Improvements [5] 19,757,000      
Costs Capitalized Subsequent to Acquisition [5] 2,134,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,594,000      
Buildings and Improvements [5] 21,899,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 26,493,000      
Accumulated Depreciation [5] $ 10,128,000      
Year Acquired [5] 2014      
Year Constructed [5] 2009      
Industrial [Member] | Greenhill Distribution Center [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 802,000      
Buildings and Improvements [5] 3,273,000      
Costs Capitalized Subsequent to Acquisition [5] 983,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 802,000      
Buildings and Improvements [5] 4,256,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,058,000      
Accumulated Depreciation [5] $ 993,000      
Year Acquired [5] 2018      
Year Constructed [5] 1999      
Industrial [Member] | Settlers Crossing 1 [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,211,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,729,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,211,000      
Buildings and Improvements [5] 8,729,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,940,000      
Accumulated Depreciation [5] $ 2,784,000      
Year Acquired [5] 2017      
Year Constructed [5] 2019      
Industrial [Member] | Settlers Crossing 2 [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,306,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,107,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,306,000      
Buildings and Improvements [5] 8,107,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,413,000      
Accumulated Depreciation [5] $ 2,522,000      
Year Acquired [5] 2017      
Year Constructed [5] 2019      
Industrial [Member] | Settlers Crossing 3 & 4 [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,774,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 18,810,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,774,000      
Buildings and Improvements [5] 18,810,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 21,584,000      
Accumulated Depreciation [5] $ 4,238,000      
Year Acquired [5] 2017      
Year Constructed [5] 2020      
Industrial [Member] | Southpark Corporate Center 3 & 4 [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,670,000      
Buildings and Improvements [5] 14,756,000      
Costs Capitalized Subsequent to Acquisition [5] 2,476,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,670,000      
Buildings and Improvements [5] 17,232,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 19,902,000      
Accumulated Depreciation [5] $ 6,334,000      
Year Acquired [5] 2015      
Year Constructed [5] 1995      
Industrial [Member] | Southpark Corporate Center 5-7 [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,301,000      
Buildings and Improvements [5] 7,589,000      
Costs Capitalized Subsequent to Acquisition [5] 2,038,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,301,000      
Buildings and Improvements [5] 9,627,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,928,000      
Accumulated Depreciation [5] $ 2,957,000      
Year Acquired [5] 2017      
Year Constructed [5] 1995      
Industrial [Member] | Springdale Business Center [Member] | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,824,000      
Buildings and Improvements [5] 8,398,000      
Costs Capitalized Subsequent to Acquisition [5] 2,550,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,824,000      
Buildings and Improvements [5] 10,948,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,772,000      
Accumulated Depreciation [5] $ 4,047,000      
Year Acquired [5] 2015      
Year Constructed [5] 2000      
Industrial [Member] | Wells Point One | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 907,000      
Buildings and Improvements [5] 4,904,000      
Costs Capitalized Subsequent to Acquisition [5] 1,184,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 907,000      
Buildings and Improvements [5] 6,088,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,995,000      
Accumulated Depreciation [5] $ 1,892,000      
Year Acquired [5] 2020      
Year Constructed [5] 2001      
Industrial [Member] | Hays Commerce Center 3 & 4 | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,527,000      
Buildings and Improvements [5] 28,846,000      
Costs Capitalized Subsequent to Acquisition [5] 43,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,527,000      
Buildings and Improvements [5] 28,889,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 35,416,000      
Accumulated Depreciation [5] $ 1,552,000      
Year Acquired [5] 2024      
Year Constructed [5] 2022      
Industrial [Member] | Stonefield 35 1-3 | Austin [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,031,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 32,717,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,985,000      
Buildings and Improvements [5] 32,763,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 38,748,000      
Accumulated Depreciation [5] $ 2,011,000      
Year Acquired [5] 2021      
Year Constructed [5] 2023      
Industrial [Member] | Broadway Industrial Park 1 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 837,000      
Buildings and Improvements [5] 3,349,000      
Costs Capitalized Subsequent to Acquisition [5] 3,480,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 837,000      
Buildings and Improvements [5] 6,829,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,666,000      
Accumulated Depreciation [5] $ 5,203,000      
Year Acquired [5] 1996      
Year Constructed [5] 1971      
Industrial [Member] | Broadway Industrial Park 2 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 455,000      
Buildings and Improvements [5] 482,000      
Costs Capitalized Subsequent to Acquisition [5] 450,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 455,000      
Buildings and Improvements [5] 932,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,387,000      
Accumulated Depreciation [5] $ 720,000      
Year Acquired [5] 1999      
Year Constructed [5] 1971      
Industrial [Member] | Broadway Industrial Park 3 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 775,000      
Buildings and Improvements [5] 1,742,000      
Costs Capitalized Subsequent to Acquisition [5] 1,136,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 775,000      
Buildings and Improvements [5] 2,878,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,653,000      
Accumulated Depreciation [5] $ 2,145,000      
Year Acquired [5] 2000      
Year Constructed [5] 1983      
Industrial [Member] | Broadway Industrial Park 4 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 380,000      
Buildings and Improvements [5] 1,652,000      
Costs Capitalized Subsequent to Acquisition [5] 1,968,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 380,000      
Buildings and Improvements [5] 3,620,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,000,000      
Accumulated Depreciation [5] $ 2,185,000      
Year Acquired [5] 2000      
Year Constructed [5] 1986      
Industrial [Member] | Broadway Industrial Park 5 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 353,000      
Buildings and Improvements [5] 1,090,000      
Costs Capitalized Subsequent to Acquisition [5] 906,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 353,000      
Buildings and Improvements [5] 1,996,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,349,000      
Accumulated Depreciation [5] $ 1,471,000      
Year Acquired [5] 2002      
Year Constructed [5] 1980      
Industrial [Member] | Broadway Industrial Park 6 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 599,000      
Buildings and Improvements [5] 1,855,000      
Costs Capitalized Subsequent to Acquisition [5] 1,600,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 599,000      
Buildings and Improvements [5] 3,455,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,054,000      
Accumulated Depreciation [5] $ 2,350,000      
Year Acquired [5] 2002      
Year Constructed [5] 1979      
Industrial [Member] | Broadway Industrial Park 7 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 450,000      
Buildings and Improvements [5] 650,000      
Costs Capitalized Subsequent to Acquisition [5] 399,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 450,000      
Buildings and Improvements [5] 1,049,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,499,000      
Accumulated Depreciation [5] $ 522,000      
Year Acquired [5] 2011      
Year Constructed [5] 1999      
Industrial [Member] | Kyrene Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,490,000      
Buildings and Improvements [5] 4,453,000      
Costs Capitalized Subsequent to Acquisition [5] 3,173,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,490,000      
Buildings and Improvements [5] 7,626,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,116,000      
Accumulated Depreciation [5] $ 5,504,000      
Year Acquired [5] 1999      
Year Constructed [5] 1981/2001      
Industrial [Member] | Falcon Field [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,312,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,138,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,312,000      
Buildings and Improvements [5] 8,138,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,450,000      
Accumulated Depreciation [5] $ 2,526,000      
Year Acquired [5] 2015      
Year Constructed [5] 2018      
Industrial [Member] | Southpark Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 918,000      
Buildings and Improvements [5] 2,738,000      
Costs Capitalized Subsequent to Acquisition [5] 2,370,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 918,000      
Buildings and Improvements [5] 5,108,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,026,000      
Accumulated Depreciation [5] $ 3,554,000      
Year Acquired [5] 2001      
Year Constructed [5] 2000      
Industrial [Member] | Southpark Distribution Center 2 | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,785,000      
Buildings and Improvements [5] 6,882,000      
Costs Capitalized Subsequent to Acquisition [5] 1,697,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,785,000      
Buildings and Improvements [5] 8,579,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,364,000      
Accumulated Depreciation [5] $ 1,234,000      
Year Acquired [5] 2021      
Year Constructed [5] 1995      
Industrial [Member] | Santan 10 Distribution Center 1 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 846,000      
Buildings and Improvements [5] 2,647,000      
Costs Capitalized Subsequent to Acquisition [5] 792,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 846,000      
Buildings and Improvements [5] 3,439,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,285,000      
Accumulated Depreciation [5] $ 2,238,000      
Year Acquired [5] 2001      
Year Constructed [5] 2005      
Industrial [Member] | Santan 10 Distribution Center 2 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,088,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,582,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,088,000      
Buildings and Improvements [5] 5,582,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,670,000      
Accumulated Depreciation [5] $ 3,413,000      
Year Acquired [5] 2004      
Year Constructed [5] 2007      
Industrial [Member] | Chandler Freeways [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,525,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,693,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,525,000      
Buildings and Improvements [5] 7,693,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,218,000      
Accumulated Depreciation [5] $ 3,005,000      
Year Acquired [5] 2012      
Year Constructed [5] 2013      
Industrial [Member] | Kyrene 202 1 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 653,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,919,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 653,000      
Buildings and Improvements [5] 5,919,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,572,000      
Accumulated Depreciation [5] $ 2,189,000      
Year Acquired [5] 2011      
Year Constructed [5] 2014      
Industrial [Member] | Kyrene 202 2 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 387,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,484,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 387,000      
Buildings and Improvements [5] 3,484,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,871,000      
Accumulated Depreciation [5] $ 1,338,000      
Year Acquired [5] 2011      
Year Constructed [5] 2014      
Industrial [Member] | Kyrene 202 3, 4, & 5 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,244,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 12,414,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,244,000      
Buildings and Improvements [5] 12,414,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,658,000      
Accumulated Depreciation [5] $ 3,451,000      
Year Acquired [5] 2011      
Year Constructed [5] 2018      
Industrial [Member] | Kyrene 202 6 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 936,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,557,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 936,000      
Buildings and Improvements [5] 8,557,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,493,000      
Accumulated Depreciation [5] $ 3,095,000      
Year Acquired [5] 2011      
Year Constructed [5] 2015      
Industrial [Member] | 51st Avenue Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 300,000      
Buildings and Improvements [5] 2,029,000      
Costs Capitalized Subsequent to Acquisition [5] 1,872,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 300,000      
Buildings and Improvements [5] 3,901,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,201,000      
Accumulated Depreciation [5] $ 2,815,000      
Year Acquired [5] 1998      
Year Constructed [5] 1987      
Industrial [Member] | East University Distribution Center 1 & 2 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,120,000      
Buildings and Improvements [5] 4,482,000      
Costs Capitalized Subsequent to Acquisition [5] 2,425,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,120,000      
Buildings and Improvements [5] 6,907,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,027,000      
Accumulated Depreciation [5] $ 6,123,000      
Year Acquired [5] 1998      
Year Constructed [5] 1987/89      
Industrial [Member] | East University Distribution Center 3 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 444,000      
Buildings and Improvements [5] 698,000      
Costs Capitalized Subsequent to Acquisition [5] 650,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 444,000      
Buildings and Improvements [5] 1,348,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 1,792,000      
Accumulated Depreciation [5] $ 868,000      
Year Acquired [5] 2010      
Year Constructed [5] 1981      
Industrial [Member] | 55th Avenue Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 912,000      
Buildings and Improvements [5] 3,717,000      
Costs Capitalized Subsequent to Acquisition [5] 2,449,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 917,000      
Buildings and Improvements [5] 6,161,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,078,000      
Accumulated Depreciation [5] $ 5,082,000      
Year Acquired [5] 1998      
Year Constructed [5] 1987      
Industrial [Member] | Interstate Commons Dist Ctr 1 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 311,000      
Buildings and Improvements [5] 1,416,000      
Costs Capitalized Subsequent to Acquisition [5] 1,310,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 311,000      
Buildings and Improvements [5] 2,726,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,037,000      
Accumulated Depreciation [5] $ 2,095,000      
Year Acquired [5] 1999      
Year Constructed [5] 1988      
Industrial [Member] | Interstate Commons 2 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,298,000      
Buildings and Improvements [5] 7,088,000      
Costs Capitalized Subsequent to Acquisition [5] 3,296,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,298,000      
Buildings and Improvements [5] 10,384,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,682,000      
Accumulated Depreciation [5] $ 2,233,000      
Year Acquired [5] 2019      
Year Constructed [5] 1988/2001      
Industrial [Member] | Interstate Commons Dist Ctr 3 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 242,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 3,329,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 242,000      
Buildings and Improvements [5] 3,329,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,571,000      
Accumulated Depreciation [5] $ 1,783,000      
Year Acquired [5] 2000      
Year Constructed [5] 2008      
Industrial [Member] | Airport Commons Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,000,000      
Buildings and Improvements [5] 1,510,000      
Costs Capitalized Subsequent to Acquisition [5] 2,364,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,000,000      
Buildings and Improvements [5] 3,874,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,874,000      
Accumulated Depreciation [5] $ 2,684,000      
Year Acquired [5] 2003      
Year Constructed [5] 1971      
Industrial [Member] | 40th Avenue Distribution Center [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 703,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 6,711,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 703,000      
Buildings and Improvements [5] 6,711,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,414,000      
Accumulated Depreciation [5] $ 3,420,000      
Year Acquired [5] 2004      
Year Constructed [5] 2008      
Industrial [Member] | Sky Harbor Business Park [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 5,839,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 24,508,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 5,839,000      
Buildings and Improvements [5] 24,508,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 30,347,000      
Accumulated Depreciation [5] $ 12,233,000      
Year Acquired [5] 2006      
Year Constructed [5] 2008      
Industrial [Member] | Sky Harbor Business Park 6 [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 807,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 2,181,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 807,000      
Buildings and Improvements [5] 2,181,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,988,000      
Accumulated Depreciation [5] $ 707,000      
Year Acquired [5] 2014      
Year Constructed [5] 2015      
Industrial [Member] | Ten Sky Harbor [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,568,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,236,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,569,000      
Buildings and Improvements [5] 5,235,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,804,000      
Accumulated Depreciation [5] $ 1,999,000      
Year Acquired [5] 2015      
Year Constructed [5] 2016      
Industrial [Member] | Gilbert Crossroads A & B [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,825,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 14,176,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,825,000      
Buildings and Improvements [5] 14,176,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,001,000      
Accumulated Depreciation [5] $ 3,580,000      
Year Acquired [5] 2018      
Year Constructed [5] 2020      
Industrial [Member] | Gilbert Crossroads C & D [Member] | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,602,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 21,173,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,602,000      
Buildings and Improvements [5] 21,173,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,775,000      
Accumulated Depreciation [5] $ 5,343,000      
Year Acquired [5] 2018      
Year Constructed [5] 2021      
Industrial [Member] | Mesa Gateway Commerce Center | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,514,000      
Buildings and Improvements [5] 14,801,000      
Costs Capitalized Subsequent to Acquisition [5] 3,765,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,514,000      
Buildings and Improvements [5] 18,566,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 22,080,000      
Accumulated Depreciation [5] $ 1,834,000      
Year Acquired [5] 2022      
Year Constructed [5] 2022      
Industrial [Member] | Akimel Gateway | Phoenix [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 82,906,000      
Costs Capitalized Subsequent to Acquisition [5] 116,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 0      
Buildings and Improvements [5] 83,022,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 9,745,000      
Total [5] 92,767,000      
Accumulated Depreciation [5] $ 4,565,000      
Year Acquired [5] 2024      
Year Constructed [5] 2022      
Industrial [Member] | Country Club 1 [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 506,000      
Buildings and Improvements [5] 3,564,000      
Costs Capitalized Subsequent to Acquisition [5] 4,704,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 693,000      
Buildings and Improvements [5] 8,081,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,774,000      
Accumulated Depreciation [5] $ 5,432,000      
Year Acquired [5] 1997/2003      
Year Constructed [5] 1994/2003      
Industrial [Member] | Country Club 2 [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 442,000      
Buildings and Improvements [5] 3,381,000      
Costs Capitalized Subsequent to Acquisition [5] 1,473,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 709,000      
Buildings and Improvements [5] 4,587,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,296,000      
Accumulated Depreciation [5] $ 2,302,000      
Year Acquired [5] 2007      
Year Constructed [5] 2000      
Industrial [Member] | Country Club 3 & 4 [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,407,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 14,035,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,575,000      
Buildings and Improvements [5] 13,867,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,442,000      
Accumulated Depreciation [5] $ 7,026,000      
Year Acquired [5] 2007      
Year Constructed [5] 2009      
Industrial [Member] | Country Club 5 [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,885,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 21,848,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,886,000      
Buildings and Improvements [5] 21,847,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,733,000      
Accumulated Depreciation [5] $ 5,288,000      
Year Acquired [5] 2016      
Year Constructed [5] 2018      
Industrial [Member] | Airport Distribution Center [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,403,000      
Buildings and Improvements [5] 4,672,000      
Costs Capitalized Subsequent to Acquisition [5] 3,309,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,403,000      
Buildings and Improvements [5] 7,981,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,384,000      
Accumulated Depreciation [5] $ 5,249,000      
Year Acquired [5] 1998/2000      
Year Constructed [5] 1995      
Industrial [Member] | Benan Distribution Center [Member] | Tucson [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [5] $ 707,000      
Buildings and Improvements [5] 1,842,000      
Costs Capitalized Subsequent to Acquisition [5] 1,180,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 707,000      
Buildings and Improvements [5] 3,022,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 3,729,000      
Accumulated Depreciation [5] $ 1,913,000      
Year Acquired [5] 2005      
Year Constructed [5] 2001      
Industrial [Member] | NorthPark Business Park [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,758,000      
Buildings and Improvements [5] 15,932,000      
Costs Capitalized Subsequent to Acquisition [5] 6,836,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,758,000      
Buildings and Improvements [5] 22,768,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 25,526,000      
Accumulated Depreciation [5] $ 14,505,000      
Year Acquired [5] 2006      
Year Constructed [5] 1987-89      
Industrial [Member] | Lindbergh Business Park [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 470,000      
Buildings and Improvements [5] 3,401,000      
Costs Capitalized Subsequent to Acquisition [5] 1,307,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 470,000      
Buildings and Improvements [5] 4,708,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,178,000      
Accumulated Depreciation [5] $ 2,785,000      
Year Acquired [5] 2007      
Year Constructed [5] 2001/03      
Industrial [Member] | Commerce Park 1 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 765,000      
Buildings and Improvements [5] 4,303,000      
Costs Capitalized Subsequent to Acquisition [5] 1,152,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 765,000      
Buildings and Improvements [5] 5,455,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,220,000      
Accumulated Depreciation [5] $ 3,276,000      
Year Acquired [5] 2007      
Year Constructed [5] 1983      
Industrial [Member] | Commerce Park Center 2 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 335,000      
Buildings and Improvements [5] 1,603,000      
Costs Capitalized Subsequent to Acquisition [5] 637,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 335,000      
Buildings and Improvements [5] 2,240,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,575,000      
Accumulated Depreciation [5] $ 1,234,000      
Year Acquired [5] 2010      
Year Constructed [5] 1987      
Industrial [Member] | Commerce Park 3 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 558,000      
Buildings and Improvements [5] 2,225,000      
Costs Capitalized Subsequent to Acquisition [5] 1,624,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 558,000      
Buildings and Improvements [5] 3,849,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,407,000      
Accumulated Depreciation [5] $ 2,077,000      
Year Acquired [5] 2010      
Year Constructed [5] 1981      
Industrial [Member] | Nations Ford Business Park [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,924,000      
Buildings and Improvements [5] 16,171,000      
Costs Capitalized Subsequent to Acquisition [5] 7,501,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,924,000      
Buildings and Improvements [5] 23,672,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 27,596,000      
Accumulated Depreciation [5] $ 14,726,000      
Year Acquired [5] 2007      
Year Constructed [5] 1989/94      
Industrial [Member] | Airport Commerce Center (Charlotte) | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,454,000      
Buildings and Improvements [5] 10,136,000      
Costs Capitalized Subsequent to Acquisition [5] 3,486,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,454,000      
Buildings and Improvements [5] 13,622,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,076,000      
Accumulated Depreciation [5] $ 7,625,000      
Year Acquired [5] 2008      
Year Constructed [5] 2001/02      
Industrial [Member] | Airport Commerce Center 3 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 855,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,306,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 855,000      
Buildings and Improvements [5] 8,306,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,161,000      
Accumulated Depreciation [5] $ 2,486,000      
Year Acquired [5] 2008      
Year Constructed [5] 2019      
Industrial [Member] | Interchange Park 1 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 986,000      
Buildings and Improvements [5] 7,949,000      
Costs Capitalized Subsequent to Acquisition [5] 798,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 986,000      
Buildings and Improvements [5] 8,747,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,733,000      
Accumulated Depreciation [5] $ 4,541,000      
Year Acquired [5] 2008      
Year Constructed [5] 1989      
Industrial [Member] | Interchange Park 2 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 746,000      
Buildings and Improvements [5] 1,456,000      
Costs Capitalized Subsequent to Acquisition [5] 420,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 746,000      
Buildings and Improvements [5] 1,876,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 2,622,000      
Accumulated Depreciation [5] $ 883,000      
Year Acquired [5] 2013      
Year Constructed [5] 2000      
Industrial [Member] | Ridge Creek Distribution Center 1 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,284,000      
Buildings and Improvements [5] 13,163,000      
Costs Capitalized Subsequent to Acquisition [5] 1,387,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,284,000      
Buildings and Improvements [5] 14,550,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,834,000      
Accumulated Depreciation [5] $ 7,154,000      
Year Acquired [5] 2008      
Year Constructed [5] 2006      
Industrial [Member] | Ridge Creek Distribution Center 2 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,033,000      
Buildings and Improvements [5] 11,497,000      
Costs Capitalized Subsequent to Acquisition [5] 3,040,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,033,000      
Buildings and Improvements [5] 14,537,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 17,570,000      
Accumulated Depreciation [5] $ 6,356,000      
Year Acquired [5] 2011      
Year Constructed [5] 2003      
Industrial [Member] | Ridge Creek Distribution Center 3 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,459,000      
Buildings and Improvements [5] 11,147,000      
Costs Capitalized Subsequent to Acquisition [5] 733,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,459,000      
Buildings and Improvements [5] 11,880,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,339,000      
Accumulated Depreciation [5] $ 4,079,000      
Year Acquired [5] 2014      
Year Constructed [5] 2013      
Industrial [Member] | Lakeview Business Center [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,392,000      
Buildings and Improvements [5] 5,068,000      
Costs Capitalized Subsequent to Acquisition [5] 1,730,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,392,000      
Buildings and Improvements [5] 6,798,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,190,000      
Accumulated Depreciation [5] $ 3,105,000      
Year Acquired [5] 2011      
Year Constructed [5] 1996      
Industrial [Member] | Steele Creek 1 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 993,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,435,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,010,000      
Buildings and Improvements [5] 4,418,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,428,000      
Accumulated Depreciation [5] $ 1,989,000      
Year Acquired [5] 2013      
Year Constructed [5] 2014      
Industrial [Member] | Steele Creek 2 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 941,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,053,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 957,000      
Buildings and Improvements [5] 5,037,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,994,000      
Accumulated Depreciation [5] $ 2,177,000      
Year Acquired [5] 2013      
Year Constructed [5] 2014      
Industrial [Member] | Steele Creek 3 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,464,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,389,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,469,000      
Buildings and Improvements [5] 7,384,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,853,000      
Accumulated Depreciation [5] $ 2,889,000      
Year Acquired [5] 2013      
Year Constructed [5] 2014      
Industrial [Member] | Steele Creek 4 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 684,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 4,273,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 687,000      
Buildings and Improvements [5] 4,270,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,957,000      
Accumulated Depreciation [5] $ 1,669,000      
Year Acquired [5] 2013      
Year Constructed [5] 2015      
Industrial [Member] | Steele Creek 5 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 610,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 5,370,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 631,000      
Buildings and Improvements [5] 5,349,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,980,000      
Accumulated Depreciation [5] $ 1,299,000      
Year Acquired [5] 2013/14/15      
Year Constructed [5] 2019      
Industrial [Member] | Steele Creek 6 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 867,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,684,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 919,000      
Buildings and Improvements [5] 7,632,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,551,000      
Accumulated Depreciation [5] $ 2,406,000      
Year Acquired [5] 2013/14      
Year Constructed [5] 2016      
Industrial [Member] | Steele Creek 7 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,207,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,477,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,253,000      
Buildings and Improvements [5] 8,431,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,684,000      
Accumulated Depreciation [5] $ 2,440,000      
Year Acquired [5] 2013/14/15      
Year Constructed [5] 2017      
Industrial [Member] | Steele Creek 8 | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 544,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,834,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 673,000      
Buildings and Improvements [5] 7,705,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,378,000      
Accumulated Depreciation [5] $ 867,000      
Year Acquired [5] 2016/17      
Year Constructed [5] 2022      
Industrial [Member] | Steele Creek 9 [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 949,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,432,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,090,000      
Buildings and Improvements [5] 10,291,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,381,000      
Accumulated Depreciation [5] $ 2,828,000      
Year Acquired [5] 2016      
Year Constructed [5] 2019      
Industrial [Member] | Steele Creek 10 | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,221,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 10,423,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,509,000      
Buildings and Improvements [5] 10,135,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,644,000      
Accumulated Depreciation [5] $ 1,533,000      
Year Acquired [5] 2016      
Year Constructed [5] 2021      
Industrial [Member] | Steele Creek 11 & 12 | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,866,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 25,111,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,866,000      
Buildings and Improvements [5] 25,111,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 26,977,000      
Accumulated Depreciation [5] $ 2,377,000      
Year Acquired [5] 2016/17      
Year Constructed [5] 2023      
Industrial [Member] | Waterford Distribution Center [Member] | Charlotte [Member] | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 654,000      
Buildings and Improvements [5] 3,392,000      
Costs Capitalized Subsequent to Acquisition [5] 967,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 654,000      
Buildings and Improvements [5] 4,359,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 5,013,000      
Accumulated Depreciation [5] $ 2,382,000      
Year Acquired [5] 2008      
Year Constructed [5] 2000      
Industrial [Member] | 147 Exchange | Raleigh | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 9,396,000      
Buildings and Improvements [5] 40,532,000      
Costs Capitalized Subsequent to Acquisition [5] 38,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 9,396,000      
Buildings and Improvements [5] 40,570,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 49,966,000      
Accumulated Depreciation [5] $ 2,234,000      
Year Acquired [5] 2024      
Year Constructed [5] 2023      
Industrial [Member] | LifeScience Logistics Center | Raleigh | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,844,000      
Buildings and Improvements [5] 37,291,000      
Costs Capitalized Subsequent to Acquisition [5] 0      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,844,000      
Buildings and Improvements [5] 37,291,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 45,135,000      
Accumulated Depreciation [5] $ 569,000      
Year Acquired [5] 2025      
Year Constructed [5] 2024      
Industrial [Member] | Lumley Logistics Center | Raleigh | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,030,000      
Buildings and Improvements [5] 12,935,000      
Costs Capitalized Subsequent to Acquisition [5] 10,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,030,000      
Buildings and Improvements [5] 12,945,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 14,975,000      
Accumulated Depreciation [5] $ 200,000      
Year Acquired [5] 2025      
Year Constructed [5] 2023      
Industrial [Member] | 385 Business Park [Member] | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,308,000      
Buildings and Improvements [5] 10,822,000      
Costs Capitalized Subsequent to Acquisition [5] 529,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,308,000      
Buildings and Improvements [5] 11,351,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,659,000      
Accumulated Depreciation [5] $ 2,920,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Access Point 1 | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 884,000      
Buildings and Improvements [5] 9,606,000      
Costs Capitalized Subsequent to Acquisition [5] 3,031,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 893,000      
Buildings and Improvements [5] 12,628,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,521,000      
Accumulated Depreciation [5] $ 2,821,000      
Year Acquired [5] 2021      
Year Constructed [5] 2021      
Industrial [Member] | Access Point 2 | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,010,000      
Buildings and Improvements [5] 9,604,000      
Costs Capitalized Subsequent to Acquisition [5] 1,729,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,012,000      
Buildings and Improvements [5] 11,331,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 12,343,000      
Accumulated Depreciation [5] $ 1,550,000      
Year Acquired [5] 2021      
Year Constructed [5] 2021      
Industrial [Member] | Access Point 3 | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,335,000      
Buildings and Improvements [5] 19,339,000      
Costs Capitalized Subsequent to Acquisition [5] 4,311,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,335,000      
Buildings and Improvements [5] 23,650,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,985,000      
Accumulated Depreciation [5] $ 2,752,000      
Year Acquired [5] 2022      
Year Constructed [5] 2022      
Industrial [Member] | Pelzer Point Commerce Center I | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,308,000      
Buildings and Improvements [5] 19,433,000      
Costs Capitalized Subsequent to Acquisition [5] 3,480,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,308,000      
Buildings and Improvements [5] 22,913,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 24,221,000      
Accumulated Depreciation [5] $ 1,491,000      
Year Acquired [5] 2023      
Year Constructed [5] 2021      
Industrial [Member] | Hillside 1 | Greenville [Member] | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [5] $ 498,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 12,748,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 499,000      
Buildings and Improvements [5] 12,747,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 13,246,000      
Accumulated Depreciation [5] $ 972,000      
Year Acquired [5] 2021      
Year Constructed [5] 2023      
Industrial [Member] | Shiloh 400 1 & 2 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 3,092,000      
Buildings and Improvements [5] 14,216,000      
Costs Capitalized Subsequent to Acquisition [5] 3,636,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 3,064,000      
Buildings and Improvements [5] 17,880,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 20,944,000      
Accumulated Depreciation [5] $ 5,740,000      
Year Acquired [5] 2017      
Year Constructed [5] 2008      
Industrial [Member] | Broadmoor Commerce Park 1 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,307,000      
Buildings and Improvements [5] 3,560,000      
Costs Capitalized Subsequent to Acquisition [5] 1,730,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,307,000      
Buildings and Improvements [5] 5,290,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,597,000      
Accumulated Depreciation [5] $ 1,858,000      
Year Acquired [5] 2017      
Year Constructed [5] 1999      
Industrial [Member] | Broadmoor Commerce Park 2 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 519,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 7,430,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 519,000      
Buildings and Improvements [5] 7,430,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,949,000      
Accumulated Depreciation [5] $ 2,075,000      
Year Acquired [5] 2017      
Year Constructed [5] 2018      
Industrial [Member] | Hurricane Shoals 1 & 2 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,284,000      
Buildings and Improvements [5] 12,449,000      
Costs Capitalized Subsequent to Acquisition [5] 4,452,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,284,000      
Buildings and Improvements [5] 16,901,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 21,185,000      
Accumulated Depreciation [5] $ 5,561,000      
Year Acquired [5] 2017      
Year Constructed [5] 2017      
Industrial [Member] | Hurricane Shoals 3 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 497,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 9,817,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 619,000      
Buildings and Improvements [5] 9,695,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,314,000      
Accumulated Depreciation [5] $ 1,723,000      
Year Acquired [5] 2017      
Year Constructed [5] 2020      
Industrial [Member] | Progress Center 1 & 2 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,297,000      
Buildings and Improvements [5] 9,015,000      
Costs Capitalized Subsequent to Acquisition [5] 500,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,297,000      
Buildings and Improvements [5] 9,515,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 10,812,000      
Accumulated Depreciation [5] $ 3,323,000      
Year Acquired [5] 2017      
Year Constructed [5] 2017      
Industrial [Member] | Progress Center 3 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 465,000      
Buildings and Improvements [5] 4,285,000      
Costs Capitalized Subsequent to Acquisition [5] 53,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 465,000      
Buildings and Improvements [5] 4,338,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,803,000      
Accumulated Depreciation [5] $ 583,000      
Year Acquired [5] 2021      
Year Constructed [5] 2008      
Industrial [Member] | Gwinnett 316 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 531,000      
Buildings and Improvements [5] 3,617,000      
Costs Capitalized Subsequent to Acquisition [5] 21,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 531,000      
Buildings and Improvements [5] 3,638,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,169,000      
Accumulated Depreciation [5] $ 794,000      
Year Acquired [5] 2018      
Year Constructed [5] 1990      
Industrial [Member] | Cherokee 75 Business Center 1 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,183,000      
Buildings and Improvements [5] 6,727,000      
Costs Capitalized Subsequent to Acquisition [5] 18,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,183,000      
Buildings and Improvements [5] 6,745,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,928,000      
Accumulated Depreciation [5] $ 1,287,000      
Year Acquired [5] 2020      
Year Constructed [5] 2020      
Industrial [Member] | Cherokee 75 Business Center 2 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,336,000      
Buildings and Improvements [5] 7,495,000      
Costs Capitalized Subsequent to Acquisition [5] 538,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,337,000      
Buildings and Improvements [5] 8,032,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 9,369,000      
Accumulated Depreciation [5] $ 1,150,000      
Year Acquired [5] 2021      
Year Constructed [5] 2021      
Industrial [Member] | Northpoint 200 [Member] | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,102,000      
Buildings and Improvements [5] 5,140,000      
Costs Capitalized Subsequent to Acquisition [5] 649,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,104,000      
Buildings and Improvements [5] 5,787,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,891,000      
Accumulated Depreciation [5] $ 1,084,000      
Year Acquired [5] 2021      
Year Constructed [5] 2021      
Industrial [Member] | I-20 West Business Center | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,670,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,490,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,647,000      
Buildings and Improvements [5] 13,513,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,160,000      
Accumulated Depreciation [5] $ 1,194,000      
Year Acquired [5] 2021      
Year Constructed [5] 2023      
Industrial [Member] | Riverpoint Industrial Park | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 7,037,000      
Buildings and Improvements [5] 79,205,000      
Costs Capitalized Subsequent to Acquisition [5] 12,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 7,037,000      
Buildings and Improvements [5] 79,217,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 86,254,000      
Accumulated Depreciation [5] $ 3,281,000      
Year Acquired [5] 2024      
Year Constructed [5] 2020      
Industrial [Member] | Braselton Commerce Center 3 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,425,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 13,602,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,575,000      
Buildings and Improvements [5] 13,452,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,027,000      
Accumulated Depreciation [5] $ 242,000      
Year Acquired [5] 2022      
Year Constructed [5] 2024      
Industrial [Member] | Riverside Parkway 1 & 2 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,955,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 32,173,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,958,000      
Buildings and Improvements [5] 32,170,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 34,128,000      
Accumulated Depreciation [5] $ 1,097,000      
Year Acquired [5] 2021      
Year Constructed [5] 2024      
Industrial [Member] | Cass White 1 & 2 | Atlanta [Member] | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,923,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 31,691,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,923,000      
Buildings and Improvements [5] 31,691,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 34,614,000      
Accumulated Depreciation [5] $ 380,000      
Year Acquired [5] 2021      
Year Constructed [5] 2024      
Industrial [Member] | Elmwood Business Park [Member] | New Orleans [Member] | LOUISIANA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,861,000      
Buildings and Improvements [5] 6,337,000      
Costs Capitalized Subsequent to Acquisition [5] 6,770,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,861,000      
Buildings and Improvements [5] 13,107,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 15,968,000      
Accumulated Depreciation [5] $ 10,776,000      
Year Acquired [5] 1997      
Year Constructed [5] 1979      
Industrial [Member] | Riverbend Business Park [Member] | New Orleans [Member] | LOUISIANA        
Initial Cost to the Company [Abstract]        
Land [5] $ 2,557,000      
Buildings and Improvements [5] 17,623,000      
Costs Capitalized Subsequent to Acquisition [5] 13,015,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 2,557,000      
Buildings and Improvements [5] 30,638,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 33,195,000      
Accumulated Depreciation [5] $ 22,359,000      
Year Acquired [5] 1997      
Year Constructed [5] 1984      
Industrial [Member] | Airways Business Center [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,137,000      
Buildings and Improvements [5] 39,637,000      
Costs Capitalized Subsequent to Acquisition [5] 2,318,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,137,000      
Buildings and Improvements [5] 41,955,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 48,092,000      
Accumulated Depreciation [5] $ 8,516,000      
Year Acquired [5] 2019      
Year Constructed [5] 2007/08      
Industrial [Member] | Rampart Distribution Center 1 [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,023,000      
Buildings and Improvements [5] 3,861,000      
Costs Capitalized Subsequent to Acquisition [5] 2,640,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,023,000      
Buildings and Improvements [5] 6,501,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,524,000      
Accumulated Depreciation [5] $ 5,956,000      
Year Acquired [5] 1988      
Year Constructed [5] 1987      
Industrial [Member] | Rampart Distribution Center 2 [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 230,000      
Buildings and Improvements [5] 2,977,000      
Costs Capitalized Subsequent to Acquisition [5] 1,621,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 230,000      
Buildings and Improvements [5] 4,598,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 4,828,000      
Accumulated Depreciation [5] $ 3,837,000      
Year Acquired [5] 1996/97      
Year Constructed [5] 1997      
Industrial [Member] | Rampart Distribution Center 3 [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,098,000      
Buildings and Improvements [5] 3,884,000      
Costs Capitalized Subsequent to Acquisition [5] 2,869,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,098,000      
Buildings and Improvements [5] 6,753,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,851,000      
Accumulated Depreciation [5] $ 5,079,000      
Year Acquired [5] 1997/98      
Year Constructed [5] 1999      
Industrial [Member] | Rampart Distribution Center 4 [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 590,000      
Buildings and Improvements [5] 0      
Costs Capitalized Subsequent to Acquisition [5] 8,350,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 590,000      
Buildings and Improvements [5] 8,350,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 8,940,000      
Accumulated Depreciation [5] $ 2,933,000      
Year Acquired [5] 2012      
Year Constructed [5] 2014      
Industrial [Member] | Concord Distribution Center [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 1,051,000      
Buildings and Improvements [5] 4,773,000      
Costs Capitalized Subsequent to Acquisition [5] 1,356,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 1,051,000      
Buildings and Improvements [5] 6,129,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 7,180,000      
Accumulated Depreciation [5] $ 3,548,000      
Year Acquired [5] 2007      
Year Constructed [5] 2000      
Industrial [Member] | Centennial Park [Member] | Denver [Member] | COLORADO        
Initial Cost to the Company [Abstract]        
Land [5] $ 750,000      
Buildings and Improvements [5] 3,319,000      
Costs Capitalized Subsequent to Acquisition [5] 2,256,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 750,000      
Buildings and Improvements [5] 5,575,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 6,325,000      
Accumulated Depreciation [5] $ 3,001,000      
Year Acquired [5] 2007      
Year Constructed [5] 1990      
Industrial [Member] | Arville Distribution Center [Member] | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 4,933,000      
Buildings and Improvements [5] 5,094,000      
Costs Capitalized Subsequent to Acquisition [5] 1,854,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 4,933,000      
Buildings and Improvements [5] 6,948,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,881,000      
Accumulated Depreciation [5] $ 3,617,000      
Year Acquired [5] 2009      
Year Constructed [5] 1997      
Industrial [Member] | Jones Corporate Park [Member] | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 13,068,000      
Buildings and Improvements [5] 26,325,000      
Costs Capitalized Subsequent to Acquisition [5] 3,414,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 13,068,000      
Buildings and Improvements [5] 29,739,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 42,807,000      
Accumulated Depreciation [5] $ 8,108,000      
Year Acquired [5] 2016      
Year Constructed [5] 2016      
Industrial [Member] | Southwest Commerce Center [Member] | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 9,008,000      
Buildings and Improvements [5] 16,576,000      
Costs Capitalized Subsequent to Acquisition [5] 4,650,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 9,008,000      
Buildings and Improvements [5] 21,226,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 30,234,000      
Accumulated Depreciation [5] $ 4,560,000      
Year Acquired [5] 2019      
Year Constructed [5] 2019      
Industrial [Member] | Blue Diamond Business Park | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 20,093,000      
Buildings and Improvements [5] 31,119,000      
Costs Capitalized Subsequent to Acquisition [5] 14,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 20,093,000      
Buildings and Improvements [5] 31,133,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 51,226,000      
Accumulated Depreciation [5] $ 1,996,000      
Year Acquired [5] 2023      
Year Constructed [5] 2022      
Industrial [Member] | Craig Corporate Center | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 13,913,000      
Buildings and Improvements [5] 18,848,000      
Costs Capitalized Subsequent to Acquisition [5] 89,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 13,913,000      
Buildings and Improvements [5] 18,937,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 32,850,000      
Accumulated Depreciation [5] $ 1,437,000      
Year Acquired [5] 2023      
Year Constructed [5] 2018      
Industrial [Member] | Spanish Ridge Industrial Park | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 18,855,000      
Buildings and Improvements [5] 33,211,000      
Costs Capitalized Subsequent to Acquisition [5] 285,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 18,855,000      
Buildings and Improvements [5] 33,496,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 52,351,000      
Accumulated Depreciation [5] $ 2,264,000      
Year Acquired [5] 2024      
Year Constructed [5] 2023      
Industrial [Member] | EastGroup Point at Cheyenne | Las Vegas [Member] | NEVADA        
Initial Cost to the Company [Abstract]        
Land [5] $ 6,151,000      
Buildings and Improvements [5] 13,576,000      
Costs Capitalized Subsequent to Acquisition [5] 4,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 6,151,000      
Buildings and Improvements [5] 13,580,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 19,731,000      
Accumulated Depreciation [5] $ 37,000      
Year Acquired [5] 2025      
Year Constructed [5] 2022      
Industrial [Member] | Tower Automotive [Member] | Jackson [Member] | MISSISSIPPI        
Initial Cost to the Company [Abstract]        
Land [5] $ 0      
Buildings and Improvements [5] 9,958,000      
Costs Capitalized Subsequent to Acquisition [5] 1,937,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [5] 17,000      
Buildings and Improvements [5] 11,878,000      
Right-of-Use Assets - Ground Leases (operating) [5],[6] 0      
Total [5] 11,895,000      
Accumulated Depreciation [5] $ 7,536,000      
Year Acquired [5] 2001      
Year Constructed [5] 2002      
Industrial Development & Value-Add [Member]        
Initial Cost to the Company [Abstract]        
Land $ 338,531,000      
Buildings and Improvements 1,097,000      
Costs Capitalized Subsequent to Acquisition 370,572,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land 343,470,000      
Buildings and Improvements 366,730,000      
Right-of-Use Assets - Ground Leases (operating) 0      
Total 710,200,000      
Accumulated Depreciation 308,000      
Industrial Development & Value-Add [Member] | Reed Land | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [7] 1,800,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 1,033,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,800,000      
Buildings and Improvements [7] 1,033,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 2,833,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Dominguez Distribution Center - redevelopment activity [Member] | CALIFORNIA        
Initial Cost to the Company [Abstract]        
Land [7],[8] $ 0      
Buildings and Improvements [7],[8] 0      
Costs Capitalized Subsequent to Acquisition [7],[8] 7,182,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7],[8] 0      
Buildings and Improvements [7],[8] 7,182,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7],[8] 0      
Total [7],[8] 7,182,000      
Accumulated Depreciation [7],[8] $ 0      
Year Acquired [7],[8] 1996      
Year Constructed [7],[8] 1977      
Industrial Development & Value-Add [Member] | Horizon Commerce Park Land | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 650,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 462,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 650,000      
Buildings and Improvements [7] 462,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 1,112,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2008/09      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Gateway Commerce Park Land [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 2,350,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 5,996,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 4,665,000      
Buildings and Improvements [7] 3,681,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,346,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2016      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Suncoast Commerce Land | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 961,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,309,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,317,000      
Buildings and Improvements [7] 953,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 4,270,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2020      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Horizon West 9 [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 1,548,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 4,535,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,548,000      
Buildings and Improvements [7] 4,535,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 6,083,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2020      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Horizon West Land [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,455,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 5,369,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,456,000      
Buildings and Improvements [7] 5,368,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,824,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2020      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Gateway South Dade Land [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 9,089,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 10,255,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 9,089,000      
Buildings and Improvements [7] 10,255,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 19,344,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Lakeside Station Land [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 6,847,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 1,450,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 6,852,000      
Buildings and Improvements [7] 1,445,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,297,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Crossroads Logistics Park 2 [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 6,151,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 21,991,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 6,151,000      
Buildings and Improvements [7] 21,991,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 28,142,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Crossroads Logistics Park Land [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,237,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 6,938,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,238,000      
Buildings and Improvements [7] 6,937,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 12,175,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Bell Creek Logistics Center Land | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 32,433,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,119,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 32,477,000      
Buildings and Improvements [7] 3,075,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 35,552,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | North Ridge Trail [Member] | FLORIDA        
Initial Cost to the Company [Abstract]        
Land [7] $ 8,640,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 660,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 8,640,000      
Buildings and Improvements [7] 660,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 9,300,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Station 24 Commerce Center 1 & 2 [Member] | TENNESSEE        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,117,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,552,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,117,000      
Buildings and Improvements [7] 3,552,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,669,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2024      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Station 24 Commerce Center Land [Member] | TENNESSEE        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,343,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 601,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,346,000      
Buildings and Improvements [7] 598,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 5,944,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2024      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | World Houston 46 [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 825,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 15,673,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 920,000      
Buildings and Improvements [7] 15,578,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 16,498,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2011      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | World Houston Golf Course Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 811,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 1,726,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 904,000      
Buildings and Improvements [7] 1,633,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 2,537,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2011      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Ridgeview Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 430,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 510,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 430,000      
Buildings and Improvements [7] 510,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 940,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2018      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Basswood Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 4,738,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,579,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 4,738,000      
Buildings and Improvements [7] 3,579,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,317,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2019      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Grand West Crossing 2 [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 1,630,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 9,266,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,630,000      
Buildings and Improvements [7] 9,266,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 10,896,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2019      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Grand West Crossing Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 4,394,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 2,814,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 4,394,000      
Buildings and Improvements [7] 2,814,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 7,208,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2019      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | McKinney 5 & 6 | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 4,593,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 2,098,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 4,593,000      
Buildings and Improvements [7] 2,098,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 6,691,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2020      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Texas Avenue 1 & 2 [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 4,143,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 15,809,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 4,161,000      
Buildings and Improvements [7] 15,791,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 19,952,000      
Accumulated Depreciation [7] $ 43,000      
Year Acquired [7] 2021      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Heritage Grove Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 15,295,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,731,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 15,352,000      
Buildings and Improvements [7] 3,674,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 19,026,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Cypress Preserve Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 14,724,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 4,086,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 14,724,000      
Buildings and Improvements [7] 4,086,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 18,810,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Eisenhauer Point 13-14 Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 2,742,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 910,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 2,746,000      
Buildings and Improvements [7] 906,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 3,652,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Cameron Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 30,776,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 4,855,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 30,772,000      
Buildings and Improvements [7] 4,859,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 35,631,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Northeast Trade Center Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,765,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,566,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,765,000      
Buildings and Improvements [7] 3,566,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 7,331,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Denton 35 Exchange 1 & 2 | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,690,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 26,972,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,690,000      
Buildings and Improvements [7] 26,972,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 32,662,000      
Accumulated Depreciation [7] $ 181,000      
Year Acquired [7] 2023      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Basswood North Land | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 23,996,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 2,626,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 24,004,000      
Buildings and Improvements [7] 2,618,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 26,622,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Frisco Park 121 Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 17,795,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 556,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 17,796,000      
Buildings and Improvements [7] 555,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 18,351,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | The Ridge Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 24,925,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 776,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 24,925,000      
Buildings and Improvements [7] 776,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 25,701,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Frisco Park 121 East Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 10,305,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 362,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 10,305,000      
Buildings and Improvements [7] 362,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 10,667,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | McKinney Airport Trade Center Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 15,025,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 110,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 15,025,000      
Buildings and Improvements [7] 110,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 15,135,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Schertz Station 3009 Land [Member] | TEXAS        
Initial Cost to the Company [Abstract]        
Land [7] $ 9,461,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 238,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 9,461,000      
Buildings and Improvements [7] 238,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 9,699,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2025      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Arista 36 Business Park 1-3 | COLORADO        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,878,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 60,434,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,878,000      
Buildings and Improvements [7] 60,434,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 66,312,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Gateway Interchange A & B [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,239,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 19,280,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,239,000      
Buildings and Improvements [7] 19,280,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 22,519,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022/2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Gateway Interchange F & G [Member] | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [7] $ 5,286,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 29,860,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 5,287,000      
Buildings and Improvements [7] 29,859,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 35,146,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022/2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Gateway Interchange Land | ARIZONA        
Initial Cost to the Company [Abstract]        
Land [7] $ 9,793,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 7,456,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 9,793,000      
Buildings and Improvements [7] 7,456,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 17,249,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022/2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Skyway Logistics Park 1 & 2 | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,744,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 32,138,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,744,000      
Buildings and Improvements [7] 32,138,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 35,882,000      
Accumulated Depreciation [7] $ 84,000      
Year Acquired [7] 2021      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Skyway Logistics Park Land | NORTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 8,294,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 6,792,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 8,212,000      
Buildings and Improvements [7] 6,874,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 15,086,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2021      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Hillside 2 | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 546,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 12,506,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 547,000      
Buildings and Improvements [7] 12,505,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 13,052,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2021      
Year Constructed [7] 2025      
Industrial Development & Value-Add [Member] | Hillside Land | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 549,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 3,607,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 549,000      
Buildings and Improvements [7] 3,607,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 4,156,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2021      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Hillside 4 Land | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 1,280,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 574,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,280,000      
Buildings and Improvements [7] 574,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 1,854,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Pelzer Point Commerce Center 2 Land | SOUTH CAROLINA        
Initial Cost to the Company [Abstract]        
Land [7] $ 1,103,000      
Buildings and Improvements [7] 1,097,000      
Costs Capitalized Subsequent to Acquisition [7] 397,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,103,000      
Buildings and Improvements [7] 1,494,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 2,597,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2023      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Braselton 1 | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [7] $ 2,443,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 827,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 2,443,000      
Buildings and Improvements [7] 827,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 3,270,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Braselton Land | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [7] $ 1,605,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 529,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 1,614,000      
Buildings and Improvements [7] 520,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 2,134,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Greenway 100 & 200 | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [7] $ 2,408,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 13,919,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 2,408,000      
Buildings and Improvements [7] 13,919,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 16,327,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Greenway Land | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,377,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 4,923,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,377,000      
Buildings and Improvements [7] 4,923,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 8,300,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2022      
Year Constructed [7] n/a      
Industrial Development & Value-Add [Member] | Brightstar Land | GEORGIA        
Initial Cost to the Company [Abstract]        
Land [7] $ 3,302,000      
Buildings and Improvements [7] 0      
Costs Capitalized Subsequent to Acquisition [7] 615,000      
Gross Amount at which Carried at Close of Period [Abstract]        
Land [7] 3,315,000      
Buildings and Improvements [7] 602,000      
Right-of-Use Assets - Ground Leases (operating) [6],[7] 0      
Total [7] 3,917,000      
Accumulated Depreciation [7] $ 0      
Year Acquired [7] 2024      
Year Constructed [7] n/a      
[1] The estimated aggregate cost of real estate properties at December 31, 2025 for federal income tax purposes was approximately $6,346,275,000 before estimated accumulated tax depreciation of $1,179,899,000.  The federal income tax return for the year ended December 31, 2025, has not been filed and accordingly, this estimate is based on preliminary data.
[2] Changes in Real Estate Properties and Development and Value-Add Properties follow:                                                          
Years Ended December 31,
202520242023
(In thousands)
Balance at beginning of year $6,177,916 5,493,195 4,934,421 
Purchases of real estate properties 139,894 381,774 160,105 
Development of real estate properties and value-add properties321,934 245,033 388,213 
Improvements to real estate properties76,609 60,007 51,643 
Right-of-use assets, net — Ground leases
(3,417)20,397 (1,395)
Carrying amount of investments sold (3,632)(18,633)(33,022)
Write-off of improvements (9,316)(3,857)(6,770)
Balance at end of year (1) 
$6,699,988 6,177,916 5,493,195 

(1) Includes noncontrolling interest in joint ventures of $1,032,000, $924,000 and $774,000 at December 31, 2025, 2024 and 2023, respectively.

Changes in the accumulated depreciation on real estate properties follow:                                                                                   
Years Ended December 31,
202520242023
(In thousands)
Balance at beginning of year $1,415,576 1,273,723 1,150,814 
Depreciation expense 176,180 155,240 141,003 
Accumulated depreciation on assets sold (252)(10,268)(11,759)
Write-off of accumulated depreciation(7,972)(3,119)(6,335)
Balance at end of year $1,583,532 1,415,576 1,273,723 
[3] See Ground Leases discussion below for information regarding the Company’s right of use assets for ground leases.
[4] Includes noncontrolling interest in joint ventures of $1,032,000, $924,000 and $774,000 at December 31, 2025, 2024 and 2023, respectively.
[5] The Company computes depreciation using the straight-line method over the estimated useful lives of the buildings (generally 40 years) and improvements (generally 3 to 15 years).   
[6] The right of use assets for ground leases, net of accumulated amortization, are included in Real Estate Properties on the Consolidated Balance Sheets.
[7] The Company transfers properties from the development and value-add program to Real estate properties as follows: (i) for development properties, at the earlier of 90% occupancy or one year after completion of the shell construction, and (ii) for value-add properties, at the earlier of 90% occupancy or one year after acquisition. Upon the earlier of 90% occupancy or one year after completion of the shell construction, capitalization of development costs, including interest expense, property taxes and internal personnel costs, ceases and depreciation commences on the entire property (excluding the land).
[8] Includes the cumulative costs at December 31, 2025 for this redevelopment project.