Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 47,317	$ 243,258	$ 252,325
Other comprehensive (loss) income:
Effective portion of change in fair value of derivative instruments	(19,187)	(15,585)	402
Reclassification adjustment of derivative instruments included in net income	11,262	3,269	5,342
Unrealized gain (loss) on available-for-sale securities	320	315	(95)
Other comprehensive (loss) income	(7,605)	(12,001)	5,649
Comprehensive income	39,712	231,257	257,974
Less: comprehensive income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests	2,428	3,828	3,198
Other comprehensive (loss) income attributable to noncontrolling interests	(977)	(931)	299
Comprehensive (loss) income attributable to noncontrolling interests	1,451	2,897	3,497
Comprehensive income attributable to the Company	38,261	228,360	254,477
Partnership Interest [Member]
Net income	47,317	243,258	252,325
Other comprehensive (loss) income:
Effective portion of change in fair value of derivative instruments	(19,187)	(15,585)	402
Reclassification adjustment of derivative instruments included in net income	11,262	3,269	5,342
Unrealized gain (loss) on available-for-sale securities	320	315	(95)
Other comprehensive (loss) income	(7,605)	(12,001)	5,649
Comprehensive income	39,712	231,257	257,974
Less: comprehensive income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests	2,225	3,194	2,673
Other comprehensive (loss) income attributable to noncontrolling interests	(948)	(912)	288
Comprehensive (loss) income attributable to noncontrolling interests	1,277	2,282	2,961
Comprehensive income attributable to the Company	$ 38,435	$ 228,975	$ 255,013