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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 3,000
Effective tax rate	(0.85%)
Federal and state Net Operating Losses	$ 147,000,000
Year of expiration of net operating loss carryforward expiration year	2027
Accruals related to uncertainties tax positions	$ 0	$ 0
Tax year remain subject to examination	2015 2016 2017 2018

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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Tax year being audited in the income tax examination, in CCYY format.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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