Share and Unit-based Plans - Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share and unit-based plans [Line Items]
Compensation cost under share and unit-based plans	$ 18,066	$ 16,723	$ 33,551
Capitalized share and unit-based compensation costs	4,223	4,691	6,184
Stock units
Share and unit-based plans [Line Items]
Compensation cost under share and unit-based plans	4,159	4,598	6,355
Unrecognized compensation cost of share and unit-based plans	2,257
LTIP units
Share and unit-based plans [Line Items]
Compensation cost under share and unit-based plans	13,339	11,372	26,311
Unrecognized compensation cost of share and unit-based plans	3,007
Stock options
Share and unit-based plans [Line Items]
Compensation cost under share and unit-based plans	0	51	125
Phantom stock units
Share and unit-based plans [Line Items]
Compensation cost under share and unit-based plans	568	702	760
Unrecognized compensation cost of share and unit-based plans	165
Stock awards and units
Share and unit-based plans [Line Items]
Fair value of equity-based awards vested during period	$ 1,376	$ 3,577	$ 6,479

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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