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Stock-based and Other Compensation (Details - Stock-based payments) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Other Significant Noncash Transactions [Line Items]        
Compensation expense related to stock-based payments $ 601 $ 623 $ 927 $ 1,296
Compensation Expense Related Income Tax Benefit [Member]        
Other Significant Noncash Transactions [Line Items]        
Related income tax benefit $ 168 $ 66 $ 259 $ 131