| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Components of Income Before Tax | The components of income before provision for income taxes were as follows for the years ended December 31, 2016, 2015 and 2014 (in thousands): | | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | U.S. | $ | 273,176 |
| | $ | 233,247 |
| | $ | 408,391 |
| Foreign | 186,270 |
| | 223,377 |
| | 71,385 |
| Income before provision for income taxes | $ | 459,446 |
| | $ | 456,624 |
| | $ | 479,776 |
|
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Schedule of Provision for Income Tax | The provision for income taxes consisted of the following for the years ended December 31, 2016, 2015 and 2014 (in thousands): | | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | Current tax provision (benefit): | | | | | | Federal | $ | 89,816 |
| | $ | 70,298 |
| | $ | 153,471 |
| State | 6,238 |
| | (1,750 | ) | | 4,978 |
| Foreign | 39,952 |
| | 62,572 |
| | 13,259 |
| Deferred tax provision (benefit): | | | | | | Federal | 4,265 |
| | 23,381 |
| | (13,073 | ) | State | (86 | ) | | (742 | ) | | (15,220 | ) | Foreign | 3,916 |
| | (18,536 | ) | | 2,442 |
| Change in valuation allowance | (787 | ) | | (5 | ) | | (29 | ) | Total | $ | 143,314 |
| | $ | 135,218 |
| | $ | 145,828 |
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Schedule of Difference Between Effective and Statutory | The Company’s effective rate differed from the U.S. federal statutory rate as follows for the years ended December 31, 2016, 2015 and 2014: | | | | | | | | | | | 2016 | | 2015 | | 2014 | U.S. federal income tax rate | 35.0 | % | | 35.0 | % | | 35.0 | % | State taxes | 2.0 |
| | 1.7 |
| | 2.3 |
| Nondeductible stock-based compensation | 2.3 |
| | 1.9 |
| | 1.4 |
| U.S. federal, state and foreign research and development credits | (3.3 | ) | | (4.1 | ) | | (3.2 | ) | Foreign earnings | (3.4 | ) | | (4.6 | ) | | (1.9 | ) | Domestic production activities deduction | (1.7 | ) | | (1.2 | ) | | (2.2 | ) | State software development activities benefit | — |
| | — |
| | (2.4 | ) | Other | 0.3 |
| | 0.9 |
| | 1.4 |
| | 31.2 | % | | 29.6 | % | | 30.4 | % |
|
Net Deferred Tax and Valuation Allowance | The components of the net deferred tax assets and liabilities and the related valuation allowance as of December 31, 2016 and 2015 were as follows (in thousands): | | | | | | | | | | 2016 | | 2015 | Accrued bonus | $ | 18,390 |
| | $ | 13,161 |
| Deferred revenue | 10,055 |
| | 11,334 |
| Deferred rent | 12,592 |
| | 13,224 |
| Stock-based compensation | 32,030 |
| | 31,705 |
| Net operating losses | 7,855 |
| | 8,855 |
| Unrealized losses | 1,862 |
| | 1,421 |
| Tax credit carryforwards | 23,629 |
| | 22,918 |
| License income | 16,932 |
| | — |
| Other | 7,048 |
| | 5,989 |
| Deferred tax assets | 130,393 |
| | 108,607 |
| Depreciation and amortization | (10,470 | ) | | (10,848 | ) | Acquired intangible assets | (44,788 | ) | | (37,923 | ) | Internal-use software development costs capitalized | (77,375 | ) | | (66,807 | ) | Deferred tax liabilities | (132,633 | ) | | (115,578 | ) | Valuation allowance | (430 | ) | | (1,217 | ) | Net deferred tax liabilities | $ | (2,670 | ) | | $ | (8,188 | ) |
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Schedule of Operating Loss Carryforwards | As of December 31, 2016 and 2015, the Company had the following NOL and credit carryforwards (in thousands, except for years):
| | | | | | | | | | | | 2016 | | 2015 | | Expirations at Various Dates Through: | NOL carryforwards: | | | | | | Federal | $ | 16,500 |
| | $ | 21,500 |
| | 2029 | State | 11,400 |
| | 28,200 |
| | 2034 | Foreign | — |
| | — |
| | | Federal and state research and development tax credit carryforwards | 41,500 |
| | 39,800 |
| | 2031 |
|
Unrecognized Tax Benefits | The following is a rollforward of the Company’s unrecognized tax benefits for the years ended December 31, 2016, 2015 and 2014 (in thousands):
| | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | Balance at beginning of year | $ | 65,290 |
| | $ | 33,320 |
| | $ | 24,651 |
| Gross increases — tax positions of prior periods | 6,391 |
| | 11,238 |
| | 12,925 |
| Gross increases — current-period tax positions | 6,252 |
| | 27,043 |
| | 2,106 |
| Gross decreases — tax positions of prior periods | (6,778 | ) | | (5,996 | ) | | (6,362 | ) | Gross decreases — settlements | (2,038 | ) | | (315 | ) | | — |
| Balance at end of year | $ | 69,117 |
| | $ | 65,290 |
| | $ | 33,320 |
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