Quarterly report pursuant to sections 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
0 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2013
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Accounting Policies [Abstract]        
Reverse stock split 0.01258      
Predetermined price of common stock purchased for warrants   $ 3,000,000    
Cash and cash equivalents, maturity description   90 days or less    
Short-term contractual maturities   1 year    
Restricted cash   100,000   155,000
Impairment losses   0   0
Interest or penalties related to income taxes   $ 0 $ 0  
Preferred stock outstanding   0   0