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(1) Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]    
Mark down of receivables portfolio $ 4,400  
Stock-based compensation 408 $ 487
Unrecognized stock-based compensation costs $ 2,800  
Weighted-average period for unrecognized costs 2 years  
Intrinsic value options outstanding $ 10,000  
Intrinsic value of options exercisable $ 7,000  
Options exercised 98,000 28,000
Intrinsic value of options exercised $ 122 $ 51
Shares available for grant 315,000