Other Noncurrent Liabilities - Summary of Other Noncurrent Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Reserve for uncertain tax positions	$ 7,312	$ 7,312
Insurance claims and expenses	638	620
Other	536	560
Total	$ 8,486	$ 8,492