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Note 6 - Fair Value of Financial Instruments - Fair Value of Cash, Notes Receivable and Accounts Receivable (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Cash $ 3,895 $ 2,219
Notes receivable, net 6,700 7,800
Fair Value, Inputs, Level 1 [Member]    
Cash 3,895 2,219
Notes receivable, net 0 0
Accounts receivable 0 0
Investments related to deferred compensation plan 248  
Total assets at fair value 3,895 2,219
Term loan payable   0
Line of credit   0
Total liabilities at fair value   0
Fair Value, Inputs, Level 2 [Member]    
Cash 0 0
Notes receivable, net 6,672 7,830
Accounts receivable 39,281 42,348
Investments related to deferred compensation plan 0  
Total assets at fair value 45,953 50,178
Term loan payable   88
Line of credit   6,829
Total liabilities at fair value   6,917
Fair Value, Inputs, Level 3 [Member]    
Cash 0 0
Notes receivable, net 0 0
Accounts receivable 0 0
Investments related to deferred compensation plan 0  
Total assets at fair value 0 0
Term loan payable   0
Line of credit   0
Total liabilities at fair value   0
Reported Value Measurement [Member]    
Cash 3,895 2,219
Notes receivable, net 6,672 7,830
Accounts receivable 39,281 42,348
Investments related to deferred compensation plan 248  
Total assets at fair value $ 50,096 52,397
Term loan payable   88
Line of credit   6,829
Total liabilities at fair value   $ 6,917