Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee Lease Description [Line Items]
Remaining term description of leases			The Company’s existing leases have remaining terms of less than one year up to 29 years.
Weighted average remaining lease term	9 years 8 months 12 days	10 years 2 months 12 days	9 years 8 months 12 days	10 years 2 months 12 days
Weighted average discount rate	6.30%	6.20%	6.30%	6.20%
Lease cost	$ 2,757	$ 2,769	$ 8,296	$ 8,577
Corporate Expenses
Lessee Lease Description [Line Items]
Lease cost	200	200	500	600
Direct Operating Expenses
Lessee Lease Description [Line Items]
Lease cost	1,400	1,400	4,300	4,400
Selling, General and Administrative Expenses
Lessee Lease Description [Line Items]
Lease cost	$ 1,200	$ 1,200	$ 3,500	$ 3,600
Maximum
Lessee Lease Description [Line Items]
Remaining term of leases			29 years
Minimum
Lessee Lease Description [Line Items]
Remaining term of leases			1 year