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Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 884 $ 877 $ 2,743 $ 2,953
Performance-based RSUs        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 332 362 1,087 1,205
Time-based RSUs, DSUs and restricted stock        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 536 515 1,613 1,748
ESPP        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 16 $ 0 $ 43 $ 0