Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities Current [Abstract]
Accrued wages, bonuses and commissions	$ 32,006	$ 30,977
Other accrued liabilities	17,150	8,531
Accrued liabilities	$ 49,156	$ 39,508