Income Taxes - Reconciliation of Unrecognized Tax Benefits Excluding Impact of Interest and Penalties (Details) $ in Thousands |
12 Months Ended |
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Dec. 31, 2017
USD ($)
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| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |
| Unrecognized tax benefits, beginning balance | $ 5,655 |
| Currency translation adjustment | 796 |
| Unrecognized tax benefits, ending balance | $ 6,451 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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