Income Taxes - Unrecognized Tax Benefits (Details) $ in Thousands |
12 Months Ended |
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Dec. 31, 2018
USD ($)
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| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |
| Beginning balance | $ 487 |
| Increase of unrecognized tax benefits taken in prior years | 51 |
| Increase of unrecognized tax benefits related to current year | 90 |
| Ending balance | $ 628 |
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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/disclosureRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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