v3.25.1
Note 3 - Investments in Related Parties (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Sep. 30, 2024
Related Party [Member]        
Investments $ 808,000   $ 808,000  
Equity Securities, FV-NI, Gain (Loss) 245,000 $ 161,000    
Related Party [Member] | Accounts Receivable [Member]        
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval 3,000   3,000  
Related Party [Member] | Accounts Payable [Member]        
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval 177,000   $ 136,000  
HC Government Realty Trust, Inc [Member] | Series B Cumulative Convertible Preferred Stock [Member]        
Equity Method Investment, Aggregate Cost       $ 10,250,000
Preferred Stock, Convertible, Conversion Price (in dollars per share)       $ 10
Convertible Preferred Stock, Maximum Conversion Price (in dollars per share)       $ 9.1
HC Government Realty Trust, Inc [Member] | Common Stock of Investee [Member]        
Equity Method Investment, Other-than-Temporary Impairment $ 41,000 $ 0