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COMMERCIAL LOANS AND INVESTMENTS - Summary - Tabular Disclosure (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Commercial Loans and Investments    
Original Face Amount $ 314,461 $ 225,581
Current Face Amount 235,780 170,946
Carrying Value 233,779 169,262
CECL Reserve (2,358) (1,709)
Total Commercial Loans and Investments 231,421 167,553
Total Commercial Loans and Investments 231,421 167,553
Construction Loan, Wawa Land Development, Greenwood, Indiana    
Commercial Loans and Investments    
Original Face Amount 16,700 14,800
Current Face Amount 14,944 9,144
Carrying Value $ 14,918 $ 9,165
Coupon Rate (as a percent) 10.00% 9.50%
Construction Loan, Wawa Land Development, Antioch, Tennessee    
Commercial Loans and Investments    
Original Face Amount $ 7,425 $ 7,425
Current Face Amount 7,421 6,309
Carrying Value $ 7,439 $ 6,317
Coupon Rate (as a percent) 10.25% 10.25%
Construction Loan, Retail Outparcels, Lawrenceville, Georgia    
Commercial Loans and Investments    
Original Face Amount   $ 7,200
Current Face Amount   1,099
Carrying Value   $ 1,095
Coupon Rate (as a percent)   11.25%
Construction Loan, Wawa Land Development, Mount Carmel, Ohio    
Commercial Loans and Investments    
Original Face Amount   $ 6,127
Current Face Amount   6,127
Carrying Value   $ 6,127
Coupon Rate (as a percent)   11.50%
Construction Loan, Retail Land Development, Stuart, Florida    
Commercial Loans and Investments    
Original Face Amount   $ 15,500
Current Face Amount   7,084
Carrying Value   $ 6,987
Coupon Rate (as a percent)   10.00%
Construction Loan, Cornerstone Exchange, Daytona Beach, Florida    
Commercial Loans and Investments    
Original Face Amount $ 23,905 $ 23,905
Current Face Amount 10,306 6,886
Carrying Value $ 10,246 $ 6,747
Coupon Rate (as a percent) 10.00% 10.00%
Construction Loan, Mixed-Use Development, Lake Toxaway, North Carolina    
Commercial Loans and Investments    
Original Face Amount $ 13,500 $ 13,500
Current Face Amount 11,279 6,938
Carrying Value $ 11,206 $ 6,813
Coupon Rate (as a percent) 16.00% 16.00%
Construction Loan, Costco Mixed-Use Development, Atlanta, Georgia    
Commercial Loans and Investments    
Original Face Amount $ 4,500 $ 4,500
Current Face Amount 2,452 879
Carrying Value $ 2,427 $ 838
Coupon Rate (as a percent) 11.00% 11.00%
Construction Loan, Retail Development, Covington, Georgia    
Commercial Loans and Investments    
Original Face Amount $ 32,000  
Current Face Amount 10,118  
Carrying Value $ 9,888  
Coupon Rate (as a percent) 13.00%  
Construction Loan, Retail Development, Lexington, Kentucky    
Commercial Loans and Investments    
Original Face Amount $ 40,000  
Current Face Amount 8,718  
Carrying Value $ 8,471  
Coupon Rate (as a percent) 10.00%  
Sale-Leaseback, Bradenton Beach, Florida    
Commercial Loans and Investments    
Original Face Amount $ 9,608 $ 9,608
Current Face Amount 9,452 9,519
Carrying Value $ 9,452 $ 9,519
Coupon Rate (as a percent) 8.30% 8.30%
Sale-Leaseback, Anna Maria, Florida    
Commercial Loans and Investments    
Original Face Amount $ 16,408 $ 16,408
Current Face Amount 16,141 16,256
Carrying Value $ 16,141 $ 16,256
Coupon Rate (as a percent) 8.30% 8.30%
Sale-Leaseback, Long Boat Key, Florida    
Commercial Loans and Investments    
Original Face Amount $ 5,408 $ 5,408
Current Face Amount 5,321 5,358
Carrying Value $ 5,321 $ 5,358
Coupon Rate (as a percent) 8.30% 8.30%
Sale-Leaseback, Aspen, Colorado    
Commercial Loans and Investments    
Original Face Amount $ 10,000  
Current Face Amount 9,995  
Carrying Value $ 9,995  
Coupon Rate (as a percent) 8.39%  
Mortgage Note, At Home Plaza, North Canton, Ohio    
Commercial Loans and Investments    
Original Face Amount   $ 6,200
Current Face Amount   6,200
Carrying Value   $ 6,200
Coupon Rate (as a percent)   8.65%
Mortgage Note, Old Time Pottery, Orange Park, Florida    
Commercial Loans and Investments    
Original Face Amount   $ 4,000
Current Face Amount   4,000
Carrying Value   $ 4,000
Coupon Rate (as a percent)   8.00%
Mortgage Note, Industrial, Fremont, California    
Commercial Loans and Investments    
Original Face Amount $ 24,000 $ 24,000
Current Face Amount 24,000 24,000
Carrying Value $ 23,863 $ 23,751
Coupon Rate (as a percent) 11.00% 11.00%
Mortgage Note, Commercial Building, Reno, Nevada    
Commercial Loans and Investments    
Original Face Amount   $ 4,000
Current Face Amount   4,000
Carrying Value   $ 4,000
Coupon Rate (as a percent)   8.00%
Mortgage Note, Luxury Residential Development, Austin, Texas    
Commercial Loans and Investments    
Original Face Amount $ 61,250 $ 29,500
Current Face Amount 59,717 28,627
Carrying Value $ 58,811 $ 28,070
Coupon Rate (as a percent) 16.00% 17.00%
Mortgage Note, Mixed-Use Development, Herndon, Virginia    
Commercial Loans and Investments    
Original Face Amount $ 20,000 $ 20,000
Current Face Amount 20,307 20,001
Carrying Value $ 20,143 $ 19,702
Coupon Rate (as a percent) 12.00% 12.00%
Redevelopment Loan, Mixed-Use Redevelopment, Denver, Colorado    
Commercial Loans and Investments    
Original Face Amount $ 13,500 $ 13,500
Current Face Amount 9,364 8,519
Carrying Value $ 9,212 $ 8,317
Coupon Rate (as a percent) 12.00% 12.00%
Sales Type Lease, Denver, Colorado    
Commercial Loans and Investments    
Original Face Amount $ 16,257  
Current Face Amount 16,246  
Carrying Value $ 16,246  
Coupon Rate (as a percent) 8.11%