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Basis of Presentation - Additional information (Detail) |  |  | 9 Months Ended
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Feb. 09, 2016 | Jun. 09, 2015 | Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Reverse stock split, conversion ratio | 0.50000 | 0.16666 | 0.08333

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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Stock Split -URI http://asc.fasb.org/extlink&oid=6525746 + Details
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