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v3.6.0.2

Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Valuation Allowance [Line Items] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ (174,456) |  |  |
Income before taxes |  |  |  |
Domestic |  | $ 38,211 | $ 58,498 | $ 49,173
Foreign |  | (15,574) | 1,733 | 1,077
Income before income taxes |  | 22,637 | 60,231 | 50,250
Federal: |  |  |  |
Current |  | 22,115 | 20,497 | 19,386
Deferred |  | (2,198) | (170,798) | 2,337
State: |  |  |  |
Current |  | 884 | 609 | 713
Deferred |  | (271) | (1,933) | 0
Foreign: |  |  |  |
Current |  | 1,275 | 443 | 1,640
Deferred |  | (5,988) | 25 | (27)
Provision for (benefit from) income taxes |  | $ 15,817 | $ (151,157) | $ 24,049
Effective income tax rate reconciliation |  |  |  |
Expense (benefit) at U.S. federal statutory rate (as a percent) |  | 35.00% | 35.00% | 35.00%
Expense (benefit) at state statutory rate (as a percent) |  | 1.80% | (1.50%) | 1.00%
Withholding tax (as a percent) |  | 97.00% | 34.10% | 38.60%
Foreign rate differential (as a percent) |  | 4.10% | 0.40% | 2.50%
Research and development ("R&D") credit (as a percent) |  | (8.30%) | (2.30%) | (6.10%)
Executive compensation (as a percent) |  | 1.50% | 0.50% | 0.20%
Non-deductible stock-based compensation (as a percent) |  | 34.80% | 5.30% | 1.40%
Foreign tax credit (as a percent) |  | (97.00%) | (34.10%) | (38.70%)
Other (as a percent) |  | 1.00% | (0.60%) | 0.60%
Valuation allowance (as a percent) |  | 0.00% | (287.80%) | 13.40%
Effective tax rate (as a percent) |  | 69.90% | (251.00%) | 47.90%
Components of net deferred tax assets |  |  |  |
Depreciation and amortization |  | $ 22,174 | $ 30,019 |
Other liabilities and reserves |  | 12,442 | 7,227 |
Deferred equity compensation |  | 17,426 | 23,176 |
Net operating loss carryovers |  | 11,439 | 11,746 |
Tax credits |  | 120,660 | 117,078 |
Total gross deferred tax assets |  | 184,141 | 189,246 |
Convertible debt |  | (3,870) | (6,044) |
Total net deferred tax assets |  | 180,271 | 183,202 |
Valuation allowance |  | (23,529) | (20,717) |
Net deferred tax assets |  | 156,742 | 162,485 |
Net deferred tax assets reported as: |  |  |  |
Non-current deferred tax assets |  | 168,342 | 162,485 |
Non-current deferred tax liabilities |  | (11,600) | 0 |
Net deferred tax assets |  | $ 156,742 | $ 162,485 |

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