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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, 2018 $ 1,439,768   $ 718 $ 1,097,758   $ 1,029,518   $ (71,397) $ (616,829)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net loss (231,808)         (231,808)      
Currency translation adjustment (excluding intercompany advances) 3,925             3,925  
Currency translation adjustment on intercompany advances (463)             (463)  
Release of currency translation adjustments on liquidation of an international operation 0                
Other comprehensive income 189             189  
Stock-based compensation expense:                  
Restricted stock 16,715   8 16,707          
Stock options 53     53          
Stock repurchases (757)               (757)
Surrender of stock to settle taxes on restricted stock awards (3,698)               (3,698)
Common stock withdrawn from deferred compensation plan 43     3         40
Ending balance at Dec. 31, 2019 1,223,967   726 1,114,521   797,710   (67,746) (621,244)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net loss (468,383)         (468,383)      
Currency translation adjustment (excluding intercompany advances) 2,065             2,065  
Currency translation adjustment on intercompany advances (5,815)             (5,815)  
Release of currency translation adjustments on liquidation of an international operation 0                
Other comprehensive income 111             111  
Stock-based compensation expense:                  
Restricted stock 8,431   7 8,424          
Surrender of stock to settle taxes on restricted stock awards (2,745)               (2,745)
Ending balance at Dec. 31, 2020 $ 757,631 $ (9,450) 733 1,122,945 $ (25,683) 329,327 $ 16,233 (71,385) (623,989)
Stock-based compensation expense:                  
Accounting Standards Update [Extensible List] Accounting Standards Update 2020-06 [Member]                
Net loss $ (63,993)         (63,993)      
Currency translation adjustment (excluding intercompany advances) (1,096)             (1,096)  
Currency translation adjustment on intercompany advances (2,948)             (2,948)  
Release of currency translation adjustments on liquidation of an international operation 9,320             9,320  
Other comprehensive income 78             78  
Restricted stock 7,879   6 7,873          
Surrender of stock to settle taxes on restricted stock awards (1,595)               (1,595)
Ending balance at Dec. 31, 2021 $ 695,826   $ 739 $ 1,105,135   $ 281,567   $ (66,031) $ (625,584)