Annual report pursuant to Section 13 and 15(d)

Income Tax - Reconciliation of Unrecognized Tax Benefits of Uncertain Tax Positions (Detail)

v3.3.1.900
Income Tax - Reconciliation of Unrecognized Tax Benefits of Uncertain Tax Positions (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits, Beginning Balance $ 2,039 $ 2,007 $ 1,967
Additions based on tax positions related to the current year 16 32 32
Additions based on tax positions related to prior years     8
Unrecognized tax benefits, Ending Balance $ 2,055 $ 2,039 $ 2,007