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Fair Value of Warrants Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Warrant liability	$ 2,424	$ 10,485	[1]
2010 Warrant Liability
Class of Warrant or Right [Line Items]
Warrant liability	$ 2,424	$ 10,485
[1] The financial information in this column was derived from audited consolidated financial statements included in the Company's 2014 Annual Report on Form 10-K.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 235



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.4-08.(i))



-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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