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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
Mar. 31, 2023
Dec. 31, 2022
Cash $ 8,207 $ 3,049
Notes receivable, net 5,200 2,400
Fair Value, Inputs, Level 1 [Member]    
Cash 8,207 3,049
Notes receivable, net 0 0
Accounts receivable 0 0
Total assets at fair value 8,207 3,049
Term loans 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 5,330 3,492
Accounts receivable 48,118 45,728
Total assets at fair value 53,448 49,220
Term loans payable 1,017 3,995
Line of credit 21,214 12,543
Total liabilities at fair value 22,231 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 loans payable 0 0
Line of credit 0 0
Total liabilities at fair value 0 0
Reported Value Measurement [Member]    
Cash 8,207 3,049
Notes receivable, net 5,330 3,492
Accounts receivable 48,118 45,728
Total assets at fair value 61,655 52,269
Term loans payable 1,017 3,995
Line of credit 21,214 12,543
Total liabilities at fair value $ 22,231 $ 16,538