Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Assets and Liabilities - Schedule of Fair Value Assumptions (Detail)

v2.4.1.9
Fair Value of Assets and Liabilities - Schedule of Fair Value Assumptions (Detail)
3 Months Ended
Mar. 31, 2014
Debt Instrument Fair Value Carrying Value [Abstract]  
Risk free interest rate 1.40%us-gaap_FairValueAssumptionsRiskFreeInterestRate
Expected dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
Contractual term 4 years 2 months 19 days
Expected volatility 87.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate