Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Net income | $ 86,704 | $ 79,425 | $ 245,206 | $ 250,276 |
| Other comprehensive (loss) gain, net of tax: | ||||
| Foreign currency translation adjustments | (3,053) | (6,037) | (5,704) | (10,290) |
| Unrealized (loss) gain on investments: | ||||
| Unrealized (losses) gains during the period, net of income taxes of $94, $200, $(146) and $501 | (160) | (734) | 190 | (1,254) |
| Less: reclassification adjustment for losses (gains) realized in net income, net of income taxes of $(52), $(62), $(143) and $(49) | 102 | 117 | 266 | 93 |
| Unrealized (loss) gain on investments: | (58) | (617) | 456 | (1,161) |
| Total other comprehensive loss, net of tax | (3,111) | (6,654) | (5,248) | (11,451) |
| Comprehensive income | $ 83,593 | $ 72,771 | $ 239,958 | $ 238,825 |