Annual report pursuant to Section 13 and 15(d)

Defined Contribution Plan - Note 13 - Additional Information (Detail)

v3.6.0.2
Defined Contribution Plan - Note 13 - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]    
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 200 $ 300