Identified Intangible Assets and Liabilities (Schedule of Identified Intangible Assets and Intangible Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross amount	$ 237,777	$ 252,081
Accumulated amortization	(93,180)	(97,186)
Total, net	144,597	154,895
Identified intangible liabilities (included in deferred revenue):
Gross amount	244,396	256,065
Accumulated amortization	(204,831)	(212,245)
Total, net	$ 39,565	$ 43,820