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Income Taxes - Federal Statutory Rate to Loss Before Income Taxes (Detail) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |
Federal statutory rate | 21.00% | 21.00%
State tax, net of federal benefit | 3.60% | 3.00%
Equity compensation | 0.10% | (0.70%)
International tax items | 0.20% | (1.70%)
Foreign taxes | 0.60% | (0.40%)
State NOL true-up | (6.10%) | (30.40%)
Miscellaneous | 0.40% | (7.70%)
Effect of change in rate | 0.90% | (12.60%)
Change in valuation allowance | (19.80%) | 29.00%
Total | 0.70% | (0.50%)

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