v3.25.1
Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 23, 2025
USD ($)
Feb. 28, 2018
USD ($)
Feb. 29, 2024
USD ($)
Mar. 31, 2025
USD ($)
Segment
Lease
Mar. 31, 2024
USD ($)
Lease
Dec. 31, 2024
USD ($)
Oct. 01, 2021
USD ($)
Summary Of Significant Accounting Policies [Line Items]              
Net impact to rental revenues due to the amortization of above market and below market leases       $ 100,000 $ 100,000    
Amortization of in-place leases       300,000 300,000    
Amortization to below market leases       601,000   $ 534,000  
Income (loss) from investment       60,000 55,000    
Assets of investments in unconsolidated affiliates       15,900,000   15,900,000  
Liabilities of investments in unconsolidated affiliates       8,500,000   8,600,000  
Revenues       20,766,000 19,972,000    
Expenses       10,770,000 10,162,000    
Proceeds from sale of property $ 16,000,000            
Impairment related to long-lived assets       $ 0   0  
Number of reportable segments | Segment       1      
Number of operating segment | Segment       1      
Write off of tenant receivable         100,000    
Settlement agreement with tenant and received     $ 600,000        
Aggregate future lease obligations       $ 2,728,000      
Incremental borrowing rate             3.86%
Right-of-use asset - operating lease, net       2,217,000   2,285,000 $ 3,100,000
Right-of-use liability - operating lease       $ 2,420,000   2,486,000 $ 3,100,000
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]             us-gaap:OtherLiabilitiesMember
Income Tax Holiday, Description       The Company is organized and conducts its operations to qualify as a REIT for federal income tax purposes. Accordingly, the Company is generally not subject to federal income taxation on the portion of its distributable income that qualifies as REIT taxable income, to the extent that it distributes at least 90% of its REIT taxable income to its stockholders and complies with certain other requirements as defined in the Code.      
Uncertain tax positions       $ 0   0  
Standard maximum deposit insurance amount       250,000      
Annual rental lease rent       20,766,000 $ 19,972,000    
Accounting Standards Update 2016-02 [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Lease term of contract             10 years
Aggregate future lease obligations       $ 2,700,000   $ 2,800,000  
Accounting Standards Update 2023-07 [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]       true      
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]       true      
Avis Rent A Car Systems, Inc. [Member] | Customer Concentration Risk [Member] | Sales Revenue Net [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Number of operating leases | Lease       1 1    
Annual rental lease rent       $ 1,900,000 $ 1,900,000    
Percentage of rental income       9.00% 10.00%    
New York [Member] | Customer Concentration Risk [Member] | Sales Revenue Net [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Number of operating leases | Lease       5 5    
Annual rental lease rent       $ 2,400,000 $ 2,400,000    
Percentage of rental income       12.00% 13.00%    
Federal Express [Member] | Customer Concentration Risk [Member] | Sales Revenue Net [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Number of operating leases | Lease       6 6    
Annual rental lease rent       $ 2,900,000 $ 2,900,000    
Percentage of rental income       14.00% 15.00%    
Minimum [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Proportion of taxable income distributed to stockholders       90.00%   90.00%  
Minimum [Member] | Properties and Property Improvements [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Estimated useful life       5 years      
Minimum [Member] | Furniture, Fixtures and Equipment [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Estimated useful life       5 years      
Maximum [Member] | Properties and Property Improvements [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Estimated useful life       40 years      
Maximum [Member] | Furniture, Fixtures and Equipment [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Estimated useful life       10 years      
Two CPS Developers LLC [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Percentage of interest purchased   50.00%          
Business combination, consideration transferred   $ 5,250,000          
Two CPS Developers LLC [Member] | Maximum [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Income (loss) from investment       $ 100,000 $ 100,000    
Above Market Lease [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Acquired lease intangible assets, net       700,000   $ 700,000  
In-place Lease [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Acquired lease intangible assets, net       4,850,000   5,000,000  
Investments in Unconsolidated Affiliates [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Revenues       500,000 400,000    
Expenses       300,000 $ 300,000    
Buildings and Improvements [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Real estate under development       0   0  
Other Assets [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Tenant receivables       $ 2,000,000   $ 1,200,000