Leases - Schedule of Lease Balances and Classification on Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Right of use assets-operating leases	$ 136,572	$ 141,438
Total lease assets	140,152	144,925
Current
Operating lease liabilities	3,757	3,896
Noncurrent
Long-term operating lease liabilities	120,144	124,339
Total lease liabilities	127,620	131,793
Other Assets Net [Member]
Lessee Lease Description [Line Items]
Finance leases	3,580	3,487
Other Accrued Liabilities [Member]
Current
Finance leases	820	707
Other Liabilities [Member]
Noncurrent
Finance leases	$ 2,899	$ 2,851