Leases - Supplemental Lease Cash Flow Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating cash flows for operating leases	$ 5,602	$ 3,998
Operating cash flows for finance leases	3	24
Finance cash flows for finance leases	459	457
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	6	126,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 0	$ 1,702