Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Trade accounts payable, including due to subcontractors	$ 55,899	$ 62,199
Compensation and related benefits	4,342	7,899
Accrued interest	67	185
Current portion of earn-out liability	22,565	14,757
Accrued warranty	2,965	3,080
Other accrued expenses	9,369	10,977
Accounts payable and accrued expenses	$ 95,207	$ 99,097