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Stock-based and Other Compensation (Details - Restricted Stock Awards) - Restricted Stock Award [Member]
shares in Thousands
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of shares outstanding, beginning | shares 164
Weighted average grant date fair value outstanding, beginning | $ / shares $ 5.69
Granted | shares 58
Weighted average grant date fair value, granted | $ / shares $ 6.88
Shares issued upon vesting | shares 0
Weighted average grant date fair value, shares issued upon vesting | $ / shares $ 0
Forfeited | shares (5)
Weighted average grant date fair value, forfeited | $ / shares $ 6.25
Number of shares outstanding, ending | shares 217
Weighted average grant date fair value outstanding, ending | $ / shares $ 5.99
Vested and deferred | shares 37
Weighted average grant date fair value, vested and deferred | $ / shares $ 5.60