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Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Additional Paid-In Capital [Member]
Treasury Stock [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Retained Earnings [Member]
Foreign Currency Translation [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Foreign Currency Translation [Member]
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Total
Balance (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2019 $ 0   $ 0   $ 0   $ (1,051)   $ 0   $ (1,051)  
Balance at Dec. 31, 2019   $ 363   $ 1,465,697   $ (2,699,119)   $ 2,921,448   $ (5,363)   $ 1,683,026
Balance, Shares (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2019 0                      
Balance, Shares at Dec. 31, 2019   36,323       8,568            
Stock-based compensation   $ 0   84,463   $ 0   0   0   84,463
Stock-based compensation, Shares   0       0            
Stock plan transactions and other   $ 4   (251)   $ 0   0   0   (247)
Stock plan transactions and other, Shares   381       0            
Acquisition of treasury stock   $ 0   0   $ (102,956)   0   0   (102,956)
Acquisition of treasury stock, Shares   0       135            
Net income   $ 0   0   $ 0   355,766   0   355,766
Other comprehensive income (loss), net of income tax   0   0   0   0   1,134   1,134
Balance at Dec. 31, 2020   $ 367   1,549,909   $ (2,802,075)   3,276,163   (4,229)   2,020,135
Balance, Shares at Dec. 31, 2020   36,704       8,703            
Stock-based compensation   $ 0   178,703   $ 0   0   0   178,703
Stock-based compensation, Shares   0       0            
Stock plan transactions and other   $ 4   700   $ 0   0   0   704
Stock plan transactions and other, Shares   428       0            
Acquisition of treasury stock   $ 0   0   $ (554,027)   0   0   (554,027)
Acquisition of treasury stock, Shares   0       349            
Net income   $ 0   0   $ 0   652,984   0   652,984
Other comprehensive income (loss), net of income tax   0   0   0   0   (1,125)   (1,125)
Balance at Dec. 31, 2021   $ 371   1,729,312   $ (3,356,102)   3,929,147   (5,354)   2,297,374
Balance, Shares at Dec. 31, 2021   37,132       9,052            
Stock-based compensation   $ 0   99,821   $ 0   0   0   99,821
Stock-based compensation, Shares   0       0            
Stock plan transactions and other   $ 2   171   $ 0   0   0   173
Stock plan transactions and other, Shares   188       0            
Acquisition of treasury stock   $ 0   0   $ (925,912)   0   0   (925,912)
Acquisition of treasury stock, Shares   0       641            
Net income   $ 0   0   $ 0   899,101   0   899,101
Other comprehensive income (loss), net of income tax   0   0   0   0   (2,534)   (2,534)
Balance at Dec. 31, 2022   $ 373   $ 1,829,304   $ (4,282,014)   $ 4,828,248   $ (7,888)   $ 2,368,023
Balance, Shares at Dec. 31, 2022   37,320       9,693