Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Detail)

v3.3.0.814
Stock-Based Compensation (Narrative) (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock based compensation $ 700 $ 600 $ 3,024 $ 2,698
Stock options granted, exercisable life     5 years  
Stock options vested period     3 years  
Stock options remainder vesting period     2 years  
Number of Shares Underlying Options, Granted     1,556,000  
Common stock repurchased, value     $ 572  
Restricted Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of Shares Underlying Options, Granted     374,783  
Minimum [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock options vested period     2 years  
Maximum [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock options vested period     5 years