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Consolidated Statement Of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Balance at Dec. 31, 2012 $ 349 $ 816,612 $ (521,518) $ 949,459 $ 1,024 $ 1,245,926
Balance, Shares at Dec. 31, 2012 34,912   3,819      
Stock-based compensation   64,781       64,781
Stock plan transactions and other $ 3 97       100
Stock plan transactions and other, Shares 333          
Excess tax benefit on stock-based compensation   38,350       38,350
Acquisition of treasury stock (value)     $ (138,903)     (138,903)
Acquisition of treasury stock (shares)     393      
Net income       327,438   327,438
Other Comprehensive Income (Loss), Net of Income Tax         596 596
Balance at Dec. 31, 2013 $ 352 919,840 $ (660,421) 1,276,897 1,620 1,538,288
Balance, Shares at Dec. 31, 2013 35,245   4,212      
Stock-based compensation   97,618       97,618
Stock plan transactions and other $ 2 (193)       (191)
Stock plan transactions and other, Shares 149          
Excess tax benefit on stock-based compensation   21,667       21,667
Acquisition of treasury stock (value)     $ (88,338)     (88,338)
Acquisition of treasury stock (shares)     155      
Net income       445,374   445,374
Other Comprehensive Income (Loss), Net of Income Tax         (2,049) (2,049)
Balance at Dec. 31, 2014 $ 354 1,038,932 $ (748,759) 1,722,271 (429) 2,012,369
Balance, Shares at Dec. 31, 2014 35,394   4,367      
Stock-based compensation   59,465       59,465
Stock plan transactions and other $ 4 (211)       (207)
Stock plan transactions and other, Shares 396          
Excess tax benefit on stock-based compensation   74,442       74,442
Acquisition of treasury stock (value)     $ (485,853)     (485,853)
Acquisition of treasury stock (shares)     839      
Net income       475,602   475,602
Other Comprehensive Income (Loss), Net of Income Tax         (7,844) (7,844)
Balance at Dec. 31, 2015 $ 358 $ 1,172,628 $ (1,234,612) $ 2,197,873 $ (8,273) $ 2,127,974
Balance, Shares at Dec. 31, 2015 35,790   5,206