Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation - Additional Information (Detail)

v2.4.0.8
Stock Based Compensation - Additional Information (Detail) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Oct. 21, 2013
Restricted Stock
Dec. 31, 2013
Restricted Stock
Dec. 31, 2013
Minimum
Dec. 31, 2013
Maximum
Stock Based Compensation (Textual) [Abstract]              
Stock options granted, exercisable life 5 years            
Stock options vested period       4 years   3 years 5 years
Stock options remainder vesting period 3 years            
Stock options, authorized 1,523,713            
Restricted stock, Issued       100,000      
Restricted stock, grant date fair value $ 2.45 $ 3.49 $ 2.09 $ 5.89      
Restricted stock, vested or forfeited         0    
Non-cash compensation expense $ 3,005,000 $ 2,406,000 $ 2,217,000        
Tax benefits related to stock based compensation 0            
Unrecognized compensation costs 2,600,000            
Compensation costs expected to be recognized 2 years            
Cash proceeds from Stock options exercised $ 3,700,000 $ 3,300,000 $ 1,900,000