Leases - Schedule of Financial Statement Classification of Lease Balances With Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Total lease assets	$ 83,807	$ 77,981
Total lease liabilities	90,652	83,755
Other Assets [Member]
Lessee Lease Description [Line Items]
Operating lease assets	81,481	74,684
Property and equipment [Member]
Lessee Lease Description [Line Items]
Finance lease assets	2,326	3,297
Accrued expenses and other current liabilities [Member]
Lessee Lease Description [Line Items]
Operating lease liabilities	20,556	19,648
Current portion of long-term debt [Member]
Lessee Lease Description [Line Items]
Finance lease liabilities	1,422	1,691
Other liabilities [Member]
Lessee Lease Description [Line Items]
Operating lease liabilities	67,421	60,285
Long-term debt [Member]
Lessee Lease Description [Line Items]
Finance lease liabilities	$ 1,253	$ 2,131