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Stock-based and Other Compensation (Details - Option activity) - Equity Option [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options outstanding, beginning balance | shares 41  
Weighted average exercise price, beginning balance | $ / shares $ 10.42  
Weighted average remaining contractual life, outstanding 1 year 8 months 19 days 2 years 2 months 15 days
Aggregate intrinsic value, options outstanding beginning | $ $ 121  
Options granted | shares 0  
Weighted average exercise price, options granted | $ / shares $ 0  
Options exercised | shares (11)  
Weighted average exercise price, options exercised | $ / shares $ 10.41  
Options forfeited | shares 0  
Weighted average exercise price, options forfeited | $ / shares $ 0  
Options outstanding, ending balance | shares 30 41
Weighted average exercise price, ending balance | $ / shares $ 10.42 $ 10.42
Aggregate intrinsic value, options outstanding ending | $ $ 70 $ 121
Exercisable | shares 30  
Weighted average exercise price, exercisable | $ / shares $ 10.42  
Weighted average remaining contractual life, exercisable 1 year 8 months 19 days  
Aggregate intrinsic value, options exercisable | $ $ 70