Identified Intangible Assets and Liabilities (Schedule of Identified Intangible Assets and Intangible Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross amount	$ 229,856	$ 237,777
Accumulated amortization	(99,770)	(98,139)
Total, net	130,086	139,638
Identified intangible liabilities (included in deferred revenue):
Gross amount	244,396	244,396
Accumulated amortization	(214,147)	(208,592)
Total, net	$ 30,249	$ 35,804