Basis of Presentation - Additional Information (Detail)	1 Months Ended
Apr. 29, 2013	Apr. 30, 2013
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Stockholders equity reverse stock split ratio	25
Stockholders equity reverse stock split description		Company announced a reverse stock split on the basis of one share of common stock for each currently outstanding 25 shares of pre-split common stock that became effective on April 30, 2013.

Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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 SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section C

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Balance Type:	na
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