Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plan - Summary of Stock Option Activity (Detail)

v2.4.0.8
Stock Compensation Plan - Summary of Stock Option Activity (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Options, Outstanding, beginning balance 660,423 725,173
Number of Options, Forfeited (56,050) (164,750)
Number of Options, Granted 61,000 100,000
Number of Options, Exercised (31,533)   
Number of Options, Outstanding, ending balance 633,840 660,423
Number of Options, Exercisable 497,157  
Option Price Per Share, granted   $ 1.2
Weighted Average Exercise Price, Outstanding, beginning balance $ 4.70 $ 4.85
Weighted Average Exercise Price, Forfeited $ 2.19 $ 3.42
Weighted Average Exercise Price, Granted $ 3.13 $ 1.20
Weighted Average Exercise Price, Exercised $ 1.26   
Weighted Average Exercise Price, Outstanding, ending balance $ 4.88 $ 4.70
Weighted Average Exercise Price, Exercisable $ 5.47  
Minimum [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option Price Per Share, beginning balance $ 1.20 $ 1.50
Option Price Per Share, forfeited $ 1.20 $ 1.50
Option Price Per Share, granted $ 2.75  
Option Price Per Share, exercised $ 1.20   
Option Price Per Share, ending balance $ 1.20 $ 1.20
Option Price Per Share, exercisable $ 1.20  
Maximum [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option Price Per Share, beginning balance $ 17.00 $ 17.00
Option Price Per Share, forfeited $ 5.40 $ 14.00
Option Price Per Share, granted $ 3.55  
Option Price Per Share, exercised $ 1.50   
Option Price Per Share, ending balance $ 17.00 $ 17.00
Option Price Per Share, exercisable $ 17.00