XML 48 R59.htm IDEA: XBRL DOCUMENT v2.4.0.8
Derivative Financial Instruments - Changes in Fair Value Inputs and Assumptions Related to Derivative Warrants (Detail) (Warrant Derivatives [Member], USD $)
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Warrant Derivatives [Member]
   
Derivative [Line Items]    
Beginning balance $ 923,580 $ 3,826,619
Issuances 831,746  
Changes in fair value inputs and assumptions reflected in income (629,577) (1,098,688)
Ending balance $ 1,125,749 $ 2,727,931