Commitments and Contingencies - Lease Commitments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) property	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lease Commitments
Properties subject to ground leases | property	23
Lease Cost
Fixed lease cost	$ 8,095	$ 8,118
Variable lease cost	4,269	4,078
Sublease income		(186)
Total operating lease cost	12,364	12,010
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 12,339	$ 12,166
Weighted-average remaining lease term - operating leases	33 years 3 months 18 days	34 years 2 months 12 days
Weighted-average discount rate - operating leases	4.87%	4.87%
Operating Lease Liabilities
2022	$ 33,120
2023	33,261
2024	33,395
2025	33,406
2026	33,420
Thereafter	857,686
Future minimum gross lease payments	1,024,288
Impact of discounting	(519,604)
Operating lease liabilities	$ 504,684		$ 506,931