Long-term Debt - Schedule of Maturities of Long-term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Term loans, as amended, net of unamortized debt discount of $477 and $249, respectively	$ 97,030	$ 47,876
Vehicle and equipment notes, maturing through September 2021; payable in various monthly installments, including interest rates ranging from 2% to 4%	33,414	21,091
Various notes payable, maturing through March 2025; payable in various monthly installments, including interest rates ranging from 4% to 6%	5,188	4,529
Total long term debt	148,075	123,235
Less: current maturities	(15,064)	(10,021)
Long-term debt, less current maturities	133,011	113,214
Delayed Draw [Member]
Debt Instrument [Line Items]
Delayed draw term loans, as amended, net of unamortized debt discount of $50 and $261, respectively	$ 12,443	$ 49,739