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Basis of Presentation - Additional Information (Detail) - ASU No. 2016-09 - U S Federal And State Jurisdiction	Jan. 01, 2017 USD ($)
Revisions [Line Items]
Net operating loss carry forwards	$ 5,300,000
Increase in valuation allowance	5,300,000
Impact of adopting ASU 2016-09 on retained earnings	$ 0

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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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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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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