Income Taxes - Schedule of Company's Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income before income taxes:      
Domestic $ (6,976) $ 10,782 $ 16,596
Foreign 2,267 1,772 (212)
Income before income taxes $ (4,709) $ 12,554 $ 16,384