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Related Party Transactions - Schedule of fees charged to unconsolidated joint ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Management fees
Related Party Transaction [Line Items]
Other	$ 6,631	$ 6,830	$ 12,199	$ 13,803
Unconsolidated Joint Ventures and Third Party Managed Properties
Related Party Transaction [Line Items]
Other	5,541	6,606	10,788	13,176
Unconsolidated Joint Ventures and Third Party Managed Properties | Management fees
Related Party Transaction [Line Items]
Other	3,986	4,295	7,803	8,781
Unconsolidated Joint Ventures and Third Party Managed Properties | Development and leasing fees
Related Party Transaction [Line Items]
Other	$ 1,555	$ 2,311	$ 2,985	$ 4,395

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