Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Detail)

v3.7.0.1
Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 2,788 $ 3,194
Chief Financial Officer [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 800