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Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Current: |  |  |
Federal | $ 14,299 | $ (90) |
State | 141 | 5 | $ 1
Foreign | 3,287 | 5,915 | 9,140
Total current | 17,727 | 5,830 | 9,141
Deferred: |  |  |
Federal | 6,043 | (2,985) | 338
State | (200) | 115 | (135)
Foreign | 7,210 | (2,097) | (640)
Total deferred | 13,053 | (4,967) | (437)
Total | $ 30,780 | $ 863 | $ 8,704

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