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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Summary of Results of Operations of Real Estate Ventures with Interests (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |
Total revenue | $ 534,852 | $ 580,417 | $ 544,345
Operating expenses | (424,027) | (468,007) | (493,608)
Interest expense, net | (73,911) | (81,512) | (78,199)
Depreciation and amortization | (188,283) | (210,005) | (176,000)
Provision for impairment | 0 | 0 | (71,707)
Loss on early extinguishment of debt | 0 | 0 | (105)
Net income | 307,326 | 34,529 | 135,472
Equity in loss of Real Estate Ventures | (18,584) | (9,922) | (15,231)
Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total revenue | 150,276 | 132,358 | 165,326
Operating expenses | (85,812) | (71,784) | (82,035)
Interest expense, net | (22,661) | (21,908) | (29,774)
Depreciation and amortization | (70,805) | (53,331) | (53,826)
Provision for impairment | 0 | (5,664) | (20,832)
Loss on early extinguishment of debt | 0 | (1,231) | (1,385)
Net income | (29,002) | (21,560) | (22,526)
Company's share of net loss | (18,540) | (9,865) | (11,924)
Other-than-temporary impairment | 0 | 0 | (4,076)
Basis adjustments and other | (44) | (57) | 769
Equity in loss of Real Estate Ventures | $ (18,584) | $ (9,922) | $ (15,231)

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