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Income Taxes - Additional Information (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Income Tax [Line Items] |  |
Unrecognized tax benefits | $ 9,400,000 | $ 9,300,000
Reasonably possible amount of unrecognized tax benefit that could reverse in the next twelve months | $ 700,000 |
Effective income tax rate | 0.91% |
Federal statutory income tax rate | 35.00% |
Cumulative Change in ownership for IRC carryforwards usage limitation | 3 years |
Maximum |  |
Income Tax [Line Items] |  |
Unrecognized tax benefits increase (decrease) | $ 100,000 |
Minimum |  |
Income Tax [Line Items] |  |
Ownership percentage for IRC carryforwards usage limitation | 50.00% |

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