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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
Jun. 30, 2023
Dec. 31, 2022
Cash $ 2,071 $ 3,049
Notes receivable, net 5,200 3,500
Fair Value, Inputs, Level 1 [Member]    
Cash 2,071 3,049
Notes receivable, net 0 0
Accounts receivable 0 0
Total assets at fair value 2,071 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 5,152 3,492
Accounts receivable 51,089 45,728
Total assets at fair value 56,241 49,220
Term loans payable 853 3,995
Line of credit 16,504 12,543
Total liabilities at fair value 17,357 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 2,071 3,049
Notes receivable, net 5,152 3,492
Accounts receivable 51,089 45,728
Total assets at fair value 58,312 52,269
Term loans payable 853 3,995
Line of credit 16,504 12,543
Total liabilities at fair value $ 17,357 $ 16,538