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Income Taxes - Additional Information (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2016 USD ($)
Operating Loss Carryforwards [Line Items] |
Valuation allowance | $ 74.9
Federal [Member] |
Operating Loss Carryforwards [Line Items] |
Federal income tax returns subject to examination description | Federal income tax returns of the Company are subject to IRS examination for the 2012, 2013 and 2014 tax years.
State [Member] |
Operating Loss Carryforwards [Line Items] |
Federal income tax returns subject to examination description | State income tax returns are subject to examination for a period of three to four years after filing.

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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