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Unaudited Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-In Capital
Additional Paid-In Capital
Cumulative Effect, Period of Adoption, Adjustment
Retained Earnings
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Loss
Treasury Stock
Beginning balance at Dec. 31, 2020 $ 757,631 $ (9,450) $ 733 $ 1,122,945 $ (25,683) $ 329,327 $ 16,233 $ (71,385) $ (623,989)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net loss (15,810)         (15,810)      
Currency translation adjustments (excluding intercompany advances) 1,068             1,068  
Currency translation adjustments on intercompany advances (2,597)             (2,597)  
Stock-based compensation expense:                  
Restricted stock 2,820   5 2,815          
Surrender of stock to settle taxes on restricted stock awards (1,500)               (1,500)
Ending balance at Mar. 31, 2021 732,162   738 1,100,077   329,750   (72,914) (625,489)
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 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:                  
Restricted stock 1,835   7 1,828          
Surrender of stock to settle taxes on restricted stock awards (990)               (990)
Ending balance at Mar. 31, 2022 $ 688,108   $ 746 $ 1,106,963   $ 272,143   $ (65,170) $ (626,574)