XML 61 R47.htm IDEA: XBRL DOCUMENT v3.5.0.2
Stock-Based Awards - Summary of Stock-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]        
Stock-based compensation expense $ 3,822 $ 2,926 $ 11,092 $ 7,878