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Consolidated statements of changes in stockholders’ equity - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Treasury stock
Retained deficit
Accumulated other comprehensive income / (loss)
Beginning balance at Dec. 31, 2020 $ 406,236 $ 60 $ 1,242,720 $ (134,499) $ (601,656) $ (100,389)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Restricted stock issuance, net of forfeitures (351) 1 (352)      
Stock-based compensation expense 7,594   7,594      
Treasury stock (1,063)     (1,063)    
Change in pension liability 840         840
Currency translation adjustment (1,479)         (1,479)
Net income (loss) (82,651)       (82,651)  
Ending balance at Dec. 31, 2021 329,126 61 1,249,962 (135,562) (684,307) (101,028)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Restricted stock issuance, net of forfeitures (828) 1 (829)      
Stock-based compensation expense 4,205   4,205      
Treasury stock (2,998)     (2,998)    
Liability awards converted to share settled 275   275      
Change in pension liability 2,256         2,256
Currency translation adjustment (28,713)         (28,713)
Net income (loss) 3,712       3,712  
Ending balance at Dec. 31, 2022 $ 307,035 $ 62 $ 1,253,613 $ (138,560) $ (680,595) $ (127,485)