Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock Options, Stock Purchase Plan and Warrants - Roll Forward of Non-Vested Stock Warrants Activity (Detail)

v3.3.1.900
Stock Options, Stock Purchase Plan and Warrants - Roll Forward of Non-Vested Stock Warrants Activity (Detail) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Warrants or restricted shares, Nonvested, Ending balance 120,000  
Warrant [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Warrants or restricted shares, Nonvested, Beginning balance 120,000  
Number of Warrants, Granted 0  
Number of Warrants, Vested 0  
Number of Warrants, Forfeited 0  
Number of Warrants or restricted shares, Nonvested, Ending balance 120,000 120,000
Weighted average grant date fair value, Nonvested, Beginning balance $ 1.43 $ 1.43
Weighted average grant date fair value, Granted 0  
Weighted average grant date fair value, Vested 0  
Weighted average grant date fair value, Forfeited $ 0