Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Detail)

v2.4.0.8
Stock-based Compensation - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Stock options granted 0 10,000
Weighted-average grant date fair value   $ 3.52
Stock options vested 10,000  
Stock options forfeited 37,142  
Stock options exercised 0