SEGMENT INFORMATION - Reconciliation of Consolidated Net Income (Loss) to Consolidated NOI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Net income	$ 12,366	$ 307,326	$ 34,529
Plus:
Interest expense	62,617	73,911	81,512
Interest expense - amortization of deferred financing costs	2,836	2,904	2,768
Depreciation and amortization	178,105	188,283	210,005
General and administrative expenses	30,153	30,288	32,156
Equity in loss of unconsolidated real estate ventures	26,697	18,584	9,922
Less:
Interest and investment income	8,295	1,939	2,318
Income tax (provision) benefit	(47)	224	(12)
Net gain on disposition of real estate	142	289,461	356
Net gain on sale of undepreciated real estate	2,903	201	2,020
Net gain on real estate venture transactions	2,973	75	11,639
Consolidated net operating income	$ 298,508	$ 329,396	$ 354,571