Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Liabilities (Detail)

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Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Fair Value Disclosures [Abstract]  
Warrant liability, Beginning Balance $ 214
Issuance of Warrants 6,529
Unrealized Gain on warrants (2,768)
Warrant liability, Ending Balance $ 3,975