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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Retained Earnings
Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2020 $ 610,144 $ 441,369 $ 1,842,680 $ (2,282,939) $ 1,553,610 $ (944,576)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income (Loss) (112,385)       (112,385)  
Other comprehensive income (loss), net of tax (16,450)         (16,450)
Issuance of treasury stock for stock option exercises 1,110   (803) 1,913    
Issuance of treasury stock for restricted stock units vesting (6,966)   (20,031) 13,065    
Share-based compensation 15,112   15,112      
Ending balance at Mar. 31, 2021 490,565 441,369 1,836,958 (2,267,961) 1,441,225 (961,026)
Beginning balance at Dec. 31, 2021 1,568,849 441,369 1,832,144 (2,219,990) 2,456,597 (941,271)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income (Loss) 21,454       21,454  
Other comprehensive income (loss), net of tax 12,061         12,061
Issuance of treasury stock for stock option exercises 13,935   (3,183) 17,118    
Issuance of treasury stock for restricted stock units vesting (17,555)   (43,523) 25,968    
Share-based compensation 19,323   19,323      
Adjustment of accumulated other comprehensive loss to retained earnings for available-for-sale securities 0       (2,801) 2,801
Ending balance at Mar. 31, 2022 $ 1,618,067 $ 441,369 $ 1,804,761 $ (2,176,904) $ 2,475,250 $ (926,409)