Assets And Liabilities Measured at Fair Value on Recurring Basis by Level Within Fair Value Hierarchy (Detail) (Fair Value, Measurements, Recurring, USD $)
Jun. 30, 2012
Dec. 31, 2011
Assets    
Money Market Account $ 110,372 [1] $ 171,651 [1]
Liabilities    
Warrant Liability 136,488 80,357
Level 1
   
Assets    
Money Market Account 110,372 [1] 171,651 [1]
Level 3
   
Liabilities    
Warrant Liability $ 136,488 $ 80,357
[1] Included in cash and cash equivalents on the consolidated balance sheet