Income Taxes - Reconciliation of Statutory Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Expected tax at statutory rate	$ 188,600	$ 111,760	$ 97,110
Non-taxable REIT income	(166,137)	(94,270)	(82,717)
State and local tax expense - net of federal benefit	3,259	3,075	2,837
Change in valuation allowance	(1,061)	(363)	(207)
Tax credits/true-up	(5,117)	(5,745)	(3,663)
Miscellaneous	780	(647)	(2,052)
Total provision	$ 20,324	$ 13,810	$ 11,308
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Expected tax at statutory rate	21.00%	21.00%	21.00%
Non-taxable REIT income	(18.50%)	(17.70%)	(17.90%)
State and local tax expense - net of federal benefit	0.40%	0.60%	0.60%
Change in valuation allowance	(0.10%)	(0.10%)	0.00%
Tax credits/true-up	(0.60%)	(1.10%)	(0.80%)
Miscellaneous	0.10%	(0.10%)	(0.40%)
Total provision	2.30%	2.60%	2.50%