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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Income taxes |  |  |
Provision for income taxes | $ 2,808 | $ 7,346 |
Effective tax rate (as a percent) | 11.80% | 12.50% |
Unrecognized tax benefits | $ 0 |  | $ 0

X
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