Debt - Schedule of Maturities of Long Term Debt (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Less: Debt issuance costs	$ (1,878)	$ (2,202)
Remainder of 2017	1,397
2018	4,677
2019	3,112
2020	617
Capital Lease Obligations	9,803
Less: Interest on capital leases	(533)
Capital Lease Obligations	9,270	10,269
Less: Current portion of long-term debt	(4,687)	(4,891)
Long-term portion of capital leases	4,583	5,378
Remainder of 2017	2,347
2018	8,476
2019	8,758
2020	6,242
2021	81,649
Long-term Debt and Capital Lease Obligations	107,472
Less: Interest on capital leases	(533)
Debt and Capital Lease Obligations	106,939	108,371
Less: Current portion of long-term debt	(8,486)	(8,733)
Total Long-Term Debt, net	96,575	97,436
Term Loan and Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Remainder of 2017	938
2018	3,750
2019	5,625
2020	5,625
2021	81,649
Long-term Debt	97,587
Long-Term Debt	97,587
Less: Current portion of long-term debt	(3,750)
Less: Debt issuance costs	(1,878)
Long-term debt, net	91,959
Auto Loans [Member]
Line Of Credit Facility [Line Items]
Remainder of 2017	12
2018	49
2019	21
Long-term Debt	82
Long-Term Debt	82	$ 202
Less: Current portion of long-term debt	(49)
Long-term debt, net	$ 33