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v3.3.1.900

Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Valuation Allowance [Line Items] |  |  |  |
Deferred Tax Liabilities, Net |  |  | $ (4,475) |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ (174,456) |  |  |
Income before taxes |  |  |  |
Domestic |  | $ 58,498 | 49,173 | $ (12,535)
Foreign |  | 1,733 | 1,077 | 518
Income before income taxes |  | 60,231 | 50,250 | (12,017)
Federal: |  |  |  |
Current |  | 20,497 | 19,386 | 19,319
Deferred |  | (170,798) | 2,337 | 2,200
State: |  |  |  |
Current |  | 609 | 713 | 47
Deferred |  | (1,933) | 0 | (501)
Foreign: |  |  |  |
Current |  | 443 | 1,640 | 446
Deferred |  | 25 | (27) | 220
Provision for (benefit from) income taxes |  | $ (151,157) | $ 24,049 | $ 21,731
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) |  | (1.50%) | 1.00% | (3.30%)
Withholding tax (as a percent) |  | 34.10% | 38.60% | 160.40%
Foreign rate differential (as a percent) |  | 0.40% | 2.50% | 4.10%
Research and development ("R&D") credit (as a percent) |  | (2.30%) | (6.10%) | (36.70%)
Executive compensation (as a percent) |  | 0.50% | 0.20% | 0.80%
Non-deductible stock-based compensation (as a percent) |  | 5.30% | 1.40% | 2.50%
Foreign tax credit (as a percent) |  | (34.10%) | (38.70%) | (163.30%)
Other (as a percent) |  | (0.60%) | 0.60% | (1.00%)
Valuation allowance (as a percent) |  | (287.80%) | 13.40% | 252.30%
Effective tax rate (as a percent) |  | (251.00%) | 47.90% | 180.80%
Components of net deferred tax assets |  |  |  |
Depreciation and amortization |  | $ 30,019 | $ 29,099 |
Other liabilities and reserves |  | 7,227 | 9,916 |
Deferred equity compensation |  | 23,176 | 29,511 |
Net operating loss carryovers |  | 11,746 | 12,307 |
Tax credits |  | 117,078 | 116,658 |
Total gross deferred tax assets |  | 189,246 | 197,491 |
Convertible debt |  | (6,044) | (8,092) |
Total net deferred tax assets |  | 183,202 | 189,399 |
Valuation allowance |  | (20,717) | (193,874) |
Net deferred tax assets |  | 162,485 |  |
Net deferred tax assets reported as: |  |  |  |
Current deferred tax assets |  | 0 | 187 |
Deferred Tax Liabilities, Net |  | 0 | (1,131) |
Non-current deferred tax assets |  | 162,485 | 536 |
Non-current deferred tax liabilities |  | 0 | $ (4,067) |
Net deferred tax assets |  | $ 162,485 |  |

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