Annual report pursuant to section 13 and 15(d)

Performance Based Non Vested Shares (Detail)

v2.4.0.6
Performance Based Non Vested Shares (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Shares    
Beginning Balance 737,020 670,355
Granted 54,250 224,250
Ending Balance 706,803 737,020
Weighted-Average Grant-Date Fair Value    
Granted $ 0.39 $ 2.24
Performance Based Non Vested Stock Options
   
Shares    
Beginning Balance 28,980  
Granted     
Vested (28,980)  
Forfeited     
Weighted-Average Grant-Date Fair Value    
Beginning Balance $ 2.57  
Granted     
Vested $ 2.57  
Forfeited