v3.19.1

Income Taxes - Additional Information (Detail) | 3 Months Ended
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Mar. 31, 2019 USD ($)
Income Tax Contingency [Line Items] |
Cumulative effect on retained deficit | $ 0
Unrecognized tax benefits | $ 0
Earliest Tax Year [Member] |
Income Tax Contingency [Line Items] |
Open tax year | 2014
Latest Tax Year [Member] |
Income Tax Contingency [Line Items] |
Open tax year | 2018

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- Definition Amount of the related income tax effect of a cumulative effect on retained earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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