Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands |
Common Stock [Member] |
Additional Paid-In Capital [Member] |
Treasury Stock [Member] |
Retained Earnings [Member] |
Available-for-sale-securities [Member] |
Foreign Currency Translation [Member] |
Total |
---|---|---|---|---|---|---|---|
Balance at Dec. 31, 2016 | $ 358 | $ 1,238,875 | $ (2,049,389) | $ 2,220,811 | $ (120) | $ (8,042) | $ 1,402,493 |
Balance, Shares at Dec. 31, 2016 | 35,833 | 7,019 | |||||
Stock-based compensation | $ 0 | 66,396 | $ 0 | 0 | 0 | 0 | 66,396 |
Stock-based compensation, Shares | 0 | 0 | |||||
Stock plan transactions and other | $ 1 | (181) | $ 0 | 0 | 0 | 0 | (180) |
Stock plan transactions and other, Shares | 19 | 0 | |||||
Acquisition of treasury stock (value) | $ 0 | 0 | $ (285,020) | 0 | 0 | 0 | (285,020) |
Acquisition of treasury stock (shares) | 0 | 807 | |||||
Net income | $ 0 | 0 | $ 0 | 176,253 | 0 | 0 | 176,253 |
Other comprehensive income (loss), net of income taxes | 0 | 0 | 0 | 0 | (186) | 4,689 | 4,503 |
Balance at Dec. 31, 2017 | $ 359 | 1,305,090 | $ (2,334,409) | 2,397,064 | (306) | (3,353) | 1,364,445 |
Balance, Shares at Dec. 31, 2017 | 35,852 | 7,826 | |||||
Stock-based compensation | $ 0 | 69,947 | $ 0 | 0 | 0 | 0 | 69,947 |
Stock-based compensation, Shares | 0 | 0 | |||||
Stock plan transactions and other | $ 1 | (883) | $ 0 | 0 | 0 | 0 | (882) |
Stock plan transactions and other, Shares | 121 | 0 | |||||
Acquisition of treasury stock (value) | $ 0 | 0 | $ (166,147) | 0 | 0 | 0 | (166,147) |
Acquisition of treasury stock (shares) | 0 | 450 | |||||
Net income | $ 0 | 0 | $ 0 | 176,553 | 0 | 0 | 176,553 |
Other comprehensive income (loss), net of income taxes | 0 | 0 | 0 | 0 | 159 | (2,736) | (2,577) |
Balance at Dec. 31, 2018 | $ 360 | 1,374,154 | $ (2,500,556) | 2,573,617 | (147) | (6,089) | 1,441,339 |
Balance, Shares at Dec. 31, 2018 | 35,973 | 8,276 | |||||
Stock-based compensation | $ 0 | 92,062 | $ 0 | 0 | 0 | 0 | 92,062 |
Stock-based compensation, Shares | 0 | 0 | |||||
Stock plan transactions and other | $ 3 | (519) | $ 0 | 0 | 0 | 0 | (516) |
Stock plan transactions and other, Shares | 350 | 0 | |||||
Acquisition of treasury stock (value) | $ 0 | 0 | $ (198,563) | 0 | 0 | 0 | (198,563) |
Acquisition of treasury stock (shares) | 0 | 292 | |||||
Net income | $ 0 | 0 | $ 0 | 350,158 | 0 | 0 | 350,158 |
Other comprehensive income (loss), net of income taxes | 0 | 0 | 0 | 0 | 147 | 726 | 873 |
Balance at Dec. 31, 2019 | $ 363 | 1,465,697 | $ (2,699,119) | 2,921,448 | 0 | (5,363) | 1,683,026 |
Balance, Shares at Dec. 31, 2019 | 36,323 | 8,568 | |||||
Adoption of ASU No. 2016-02, Leases (Topic 842) | $ 0 | $ 0 | $ 0 | $ (2,327) | $ 0 | $ 0 | $ (2,327) |