Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income Tax Disclosure [Abstract] | ||
| Gross unrecognized tax benefits at January 1, | $ 1,143 | $ 0 |
| Gross increases (decreases) related to acquisitions | (1,143) | 1,064 |
| Gross increases related to current year tax positions | 0 | 79 |
| Gross unrecognized tax benefits at December 31, | $ 0 | $ 1,143 |
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- Definition Unrecognized tax benefits assumed in connection with the merger. No definition available.
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- References 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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