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Unaudited Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Stock
Beginning balance at Dec. 31, 2021 $ 695,826 $ 739 $ 1,105,135 $ 281,567 $ (66,031) $ (625,584)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) (9,424)     (9,424)    
Currency translation adjustments (excluding intercompany advances) (3,580)       (3,580)  
Currency translation adjustments on intercompany advances 4,441       4,441  
Stock-based compensation expense 1,835 7 1,828      
Surrender of stock to settle taxes on stock awards (990)         (990)
Ending balance at Mar. 31, 2022 688,108 746 1,106,963 272,143 (65,170) (626,574)
Beginning balance at Dec. 31, 2022 689,558 766 1,122,292 272,027 (78,941) (626,586)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 2,158     2,158    
Currency translation adjustments (excluding intercompany advances) 3,494       3,494  
Currency translation adjustments on intercompany advances 655       655  
Stock-based compensation expense 1,589 5 1,584      
Surrender of stock to settle taxes on stock awards (1,936)         (1,936)
Ending balance at Mar. 31, 2023 $ 695,518 $ 771 $ 1,123,876 $ 274,185 $ (74,792) $ (628,522)