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Consolidated Statements of Changes in Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital
Treasury Stock
Retained Earnings
Accumulated Other Comprehensive Loss
Noncontrolling Interests
Balance at Dec. 31, 2018 $ 1,232,842 $ 1,198 $ 1,104,264 $ (391,551) $ 669,805 $ (151,043) $ 169
Balance, shares at Dec. 31, 2018   51,819,998          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 346,695       346,749   (54)
Other comprehensive loss (13,894)         (13,847) (47)
Stock issued under employee stock plans 11,947 $ 8 13,216 (1,277)      
Stock issued under employee stock plans, shares   405,617          
Share-based compensation 21,439   21,439        
Issuance of convertible notes, net of tax 71,659   71,659        
Repurchase of shares (70,876)     (70,876)      
Repurchase of shares, shares   (493,010)          
Redemptions and conversions of convertible notes, net of tax (20,467) $ 50 (20,517)        
Redemptions and conversions of convertible notes, net of tax, shares   2,488,249          
Stockholders' Equity, Other (3)   (3)        
Balance at Dec. 31, 2019 1,579,342 $ 1,256 1,190,058 (463,704) 1,016,554 (164,890) 68
Balance, shares at Dec. 31, 2019   54,220,854          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) (3,304)       (3,399)   95
Other comprehensive loss 70,794         70,676 118
Stock issued under employee stock plans 16,883 $ 11 16,437 435      
Stock issued under employee stock plans, shares   608,878          
Share-based compensation 21,951   21,951        
Repurchase of shares (239,763)     (239,763)      
Repurchase of shares, shares   (2,095,683)          
Balance at Dec. 31, 2020 1,445,903 $ 1,267 1,228,446 (703,032) 1,013,155 (94,214) 281
Balance, shares at Dec. 31, 2020   52,734,049          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 70,587       70,727   (140)
Other comprehensive loss (78,466)         (78,368) (98)
Stock issued under employee stock plans 8,724 $ 8 9,132 416      
Stock issued under employee stock plans, shares   413,835          
Share-based compensation 36,540   36,540        
Repurchase of shares (227,764)     (227,764)      
Repurchase of shares, shares   (2,000,000)          
Balance at Dec. 31, 2021 $ 1,255,524 $ 1,275 $ 1,274,118 $ (931,212) $ 1,083,882 $ (172,582) $ 43
Balance, shares at Dec. 31, 2021   51,147,884