| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
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Income Tax Disclosure [Abstract] | |
Schedule of Income before Income Tax, Domestic and Foreign | income before provision for income taxes and equity in losses of investee consist of the following (in thousands): | | | | | | | | | | | | | | Year ended December 31, | | 2016 | | 2015 | | 2014 | Domestic | $ | 118,871 |
| | $ | 87,803 |
| | $ | 94,784 |
| Foreign | 123,695 |
| | 98,298 |
| | 95,585 |
| Net income before provision for income taxes and equity in losses of investee | $ | 242,566 |
| | $ | 186,101 |
| | $ | 190,369 |
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Schedule of Components of Income Tax Expense (Benefit) | The provision for income taxes consists of the following (in thousands): | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Federal | | | | | | Current | $ | 40,235 |
| | $ | 28,596 |
| | $ | 1,569 |
| Deferred | 24,794 |
| | 6,679 |
| | 37,570 |
| | 65,029 |
| | 35,275 |
| | 39,139 |
| State | | | | | | Current | 2,603 |
| | 3,271 |
| | 2,162 |
| Deferred | 2,636 |
| | (703 | ) | | 971 |
| | 5,239 |
| | 2,568 |
| | 3,133 |
| Foreign | | | | | | Current | 8,964 |
| | 4,305 |
| | 1,596 |
| Deferred | (28,032 | ) | | (67 | ) | | 669 |
| | (19,068 | ) | | 4,238 |
| | 2,265 |
| Provision for income taxes | $ | 51,200 |
| | $ | 42,081 |
| | $ | 44,537 |
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Schedule of Effective Income Tax Rate Reconciliation | The differences between income taxes using the federal statutory income tax rate of 35% and our effective tax rate are as follows: | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | U.S. federal statutory income tax rate | 35.0 | % | | 35.0 | % | | 35.0 | % | State income taxes, net of federal tax benefit | 2.1 |
| | 1.5 |
| | 1.6 |
| Impact of differences in foreign tax rates | (6.3 | ) | | (16.2 | ) | | (16.4 | ) | Valuation allowance release for Israel | (12.9 | ) | | — |
| | — |
| Stock-based compensation | 1.2 |
| | 1.6 |
| | 1.0 |
| Other items not individually material | 2.0 |
| | 0.7 |
| | 2.2 |
| | 21.1 | % | | 22.6 | % | | 23.4 | % |
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Schedule of Deferred Tax Assets and Liabilities | As of December 31, 2016 and 2015, the significant components of our deferred tax assets and liabilities are (in thousands): | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | Deferred tax assets: | | | | Net operating loss and capital loss carryforwards | $ | 25,445 |
| | $ | 31,247 |
| Reserves and accruals | 22,954 |
| | 17,455 |
| Stock-based compensation | 16,399 |
| | 16,523 |
| Deferred revenue | 13,975 |
| | 24,432 |
| Net translation losses | 1,634 |
| | 649 |
| Credit carryforwards | 679 |
| | 1,932 |
| | 81,086 |
| | 92,238 |
| Deferred tax liabilities: | | | | Depreciation and amortization | 12,034 |
| | 8,555 |
| Prepaid expenses | 969 |
| | 601 |
| | 13,003 |
| | 9,156 |
| Net deferred tax assets before valuation allowance | 68,083 |
| | 83,082 |
| Valuation allowance | (256 | ) | | (31,685 | ) | Net deferred tax assets | $ | 67,827 |
| | $ | 51,397 |
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Schedule of Unrecognized Tax Benefits Rollforward | The changes in the balance of gross unrecognized tax benefits, which exclude interest and penalties, for the year ended December 31, 2016, 2015 and 2014, are as follows (in thousands):
| | | | | Unrecognized tax benefit as of December 31, 2013 | $ | 26,668 |
| Tax positions related to current year: | | Additions for uncertain tax positions | 6,659 |
| Tax positions related to prior year: | | Reductions for uncertain tax positions | (260 | ) | Unrecognized tax benefit as of December 31, 2014 | 33,067 |
| Tax positions related to current year: | | Additions for uncertain tax positions | 6,346 |
| Unrecognized tax benefit as of December 31, 2015 | 39,413 |
| Tax positions related to current year: | | Additions for uncertain tax positions | 6,971 |
| Unrecognized tax benefit as of December 31, 2016 | $ | 46,384 |
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