Leases (Lessee) - Summary of Lease Expense (Parenthetical) (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Operating lease cost	[1],[2]	$ 9,910	$ 9,262
Property-related [Member]
Lessee Lease Description [Line Items]
Operating lease cost		$ 6,000	$ 5,800

[1] $6.0 million and $5.8 million included in “Property-related”, with the remainder reflected in the “General and administrative” line of our consolidated statements of net income for 2020 and 2019, respectively.

[2] Includes short-term leases.