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Note 1 - Overview and Summary of Significant Accounting Policies - Fair Value of Cash, Notes Receivable and Accounts Receivable (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Cash $ 1,342 $ 3,049
Notes receivable, net 9,600 3,500
Fair Value, Inputs, Level 1 [Member]    
Cash 1,342 3,049
Notes receivable, net 0 0
Accounts receivable 0 0
Total assets at fair value 1,342 3,049
Term loan payable 0 0
Line of credit 0 0
Total liabilities at fair value 0 0
Fair Value, Inputs, Level 2 [Member]    
Cash 0 0
Notes receivable, net 9,622 3,492
Accounts receivable 44,394 45,728
Total assets at fair value 54,016 49,220
Term loan payable 646 3,995
Line of credit 14,119 12,543
Total liabilities at fair value 14,765 16,538
Fair Value, Inputs, Level 3 [Member]    
Cash 0 0
Notes receivable, net 0 0
Accounts receivable 0 0
Total assets at fair value 0 0
Term loan payable 0 0
Line of credit 0 0
Total liabilities at fair value 0 0
Reported Value Measurement [Member]    
Cash 1,342 3,049
Notes receivable, net 9,622 3,492
Accounts receivable 44,394 45,728
Total assets at fair value 55,358 52,269
Term loan payable 646 3,995
Line of credit 14,119 12,543
Total liabilities at fair value $ 14,765 $ 16,538