Income Taxes - Deferred Tax Assets and Liabilities (Parenthetical) (Detail) $ in Millions |
Dec. 31, 2018
USD ($)
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|---|---|
| Income Tax Disclosure [Abstract] | |
| Tax loss and credit carryforwards | $ 63.8 |
| X | ||||||||||
- Definition Reduction to deferred tax assets operating loss and tax credit carryforwards foreign. No definition available.
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| X | ||||||||||
- References No definition available.
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