XML 61 R50.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Note 6 - Investments (Details Textual)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Mar. 31, 2023
shares
Debt Securities, Available-for-Sale, Allowance for Credit Loss $ 0 $ 0  
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 201 181  
Private Company [Member]      
Equity Method Investment, Other than Temporary Impairment $ 0    
Limited Liability Investments [Member]      
Equity Method Investments 800 $ 800  
Equity Method Investment, Other than Temporary Impairment 0 0  
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments 0    
Limited Liability Investments [Member] | Net Lease [Member]      
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 0    
Net Lease and Argo Holding [Member]      
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 3,500 3,500  
Private Company Investments [Member]      
Investment Owned, Fair Value $ 900 $ 900  
Warrant [Member] | Limbach Holdings, Inc. [Member]      
Investment Owned, Balance, Shares (in shares) | shares     400,000