Other Current Liabilities - Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Customer-related liabilities	$ 22,164	$ 21,564
Accrued interest payable	2,355	2,274
Accrued sales commissions	1,863	1,693
Other	16,870	16,666
Other current liabilities	$ 43,252	$ 42,197