Long-term Debt - Schedule of Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Senior Notes due 2028, net of unamortized debt issuance costs of $4,380 and $4,823, respectively	$ 295,620	$ 295,177
Term loan, net of unamortized debt issuance costs of $1,426 and $1,662, respectively	198,574	198,338
Vehicle and equipment notes, maturing through September 2025; payable in various monthly installments, including interest rates ranging from 1.9% to 4.8%	70,846	72,714
Various notes payable, maturing through March 2025; payable in various monthly installments, including interest rates ranging from 2.0% to 6.0%	3,392	2,966
Total long term debt	568,432	569,195
Less: current maturities	(24,156)	(24,164)
Long-term debt, less current maturities	$ 544,276	$ 545,031