Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | |
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Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
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Income Tax Disclosure [Abstract] | |||
Income tax expense or benefit | $ 0 | $ 0 | |
Federal corporate income tax rate | 21.00% | 34.00% | |
Tax cuts and jobs act of 2017, deduction for net operating losses percentage of taxable income | 80.00% |
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- Definition Tax cuts and jobs act of twenty seventeen limitation of net operating loss deduction percentage of annual taxable income. No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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