Convertible Preferred Stock, Common Stock and Warrants (Detail 1) - $ / shares		12 Months Ended
Jul. 08, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Expected life of options, in years	4 years 10 months 24 days	4 years 4 months 10 days
Market price for common stock	$ 11.60	$ 1.82
Warrant exercise price, adjusted	$ 26.64	$ 1.80

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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