Commitments and Contingencies - Schedule of Lease Costs and Other Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Lessee, Lease, Description
Net lease cost	$ 2,490	$ 2,433	$ 4,998	$ 4,905
Right-of-use assets obtained in exchange for new operating lease liabilities	1,309	0	1,392	3,006
Operating leases
Lessee, Lease, Description
Lease cost	2,480	2,443	4,979	4,924
Sublease income, ground leases (included in other operations revenue)	0	0	0	0
Cash paid for amounts included in the measurement of lease liabilities	$ 2,129	1,838	$ 4,424	4,626
Weighted-average discount rate (percent)	4.70%		4.70%		4.60%
Weighted-average remaining lease term (in years)	7 years 6 months		7 years 6 months		7 years 1 month 6 days
Ground leases
Lessee, Lease, Description
Lease cost	$ 702	645	$ 1,346	1,269
Sublease income, ground leases (included in other operations revenue)	(692)	(655)	(1,327)	(1,288)
Cash paid for amounts included in the measurement of lease liabilities	$ 664	$ 634	$ 1,327	$ 1,269
Weighted-average discount rate (percent)	10.20%		10.20%		10.20%
Weighted-average remaining lease term (in years)	45 years 9 months 18 days		45 years 9 months 18 days		46 years 1 month 6 days