Corporate Indebtedness - Senior Unsecured Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt disclosures by scheduled maturity date
Accreted Balance	$ 1,244,881	$ 1,641,552
Senior unsecured notes
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	100,000
Accreted Balance	100,000	100,000
Deferred financing costs, net	(205)	(308)
Senior notes, net of deferred finance costs	99,795	99,692
Senior unsecured notes | 4.27% Senior unsecured notes maturing on December 17, 2025
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	100,000
Accreted Balance	$ 100,000	$ 100,000
Coupon Rate (as a percent)	4.27%
Initial Term (in Years)	10 years