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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
Sep. 30, 2022
Dec. 31, 2021
Cash $ 1,535 $ 1,256
Notes receivable, net 3,700 3,900
Fair Value, Inputs, Level 1 [Member]    
Cash 1,535 1,256
Notes receivable, net 0 0
Accounts receivable 0 0
Notes receivable - impaired 0 0
Total assets at fair value 1,535 1,256
Line of credit 0 0
Total liabilities at fair value 0 0
Fair Value, Inputs, Level 1 [Member] | Term Loan [Member]    
Term loans payable 0 0
Fair Value, Inputs, Level 2 [Member]    
Cash 0 0
Notes receivable, net 3,701 4,027
Accounts receivable 45,686 38,239
Notes receivable - impaired 0
Total assets at fair value 49,387 42,266
Line of credit 2,206 171
Total liabilities at fair value 6,333 3,237
Fair Value, Inputs, Level 2 [Member] | Term Loan [Member]    
Term loans payable 4,127 3,066
Fair Value, Inputs, Level 3 [Member]    
Cash 0 0
Notes receivable, net 0 0
Accounts receivable 0 0
Notes receivable - impaired 23 140
Total assets at fair value 23 140
Line of credit 0 0
Total liabilities at fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Term Loan [Member]    
Term loans payable 0 0
Reported Value Measurement [Member]    
Cash 1,535 1,256
Notes receivable, net 3,701 4,027
Accounts receivable 45,686 38,239
Notes receivable - impaired 23 140
Total assets at fair value 50,945 43,662
Line of credit 2,206 171
Total liabilities at fair value 6,333 3,237
Reported Value Measurement [Member] | Term Loan [Member]    
Term loans payable $ 4,127 $ 3,066