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UNCONSOLIDATED AFFILIATES - Summarized Financial Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Equity Method Investment, Summarized Financial Information, Balance Sheet [Abstract] |  |  |
Investment in real estate assets | $ 2,293,438,000 | $ 2,097,088,000 |
Accumulated depreciation | (803,909,000) | (674,275,000) |
Investment in real estate, net | 1,489,529,000 | 1,422,813,000 |
Developments in progress | 46,503,000 | 12,569,000 |
Net investment in real estate assets | 1,536,032,000 | 1,435,382,000 |
Other assets | 154,427,000 | 188,521,000 |
Total assets | 1,690,459,000 | 1,623,903,000 |
Mortgage and other indebtedness, net | 1,417,644,000 | 1,319,949,000 |
Other liabilities | 41,007,000 | 39,777,000 |
Total liabilities | 1,458,651,000 | 1,359,726,000 |
The Company | 149,376,000 | 191,050,000 |
Other investors | 82,432,000 | 73,127,000 |
Total owners' equity | 231,808,000 | 264,177,000 |
Total liabilities and owners’ equity | 1,690,459,000 | 1,623,903,000 |
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] |  |  |
Total revenues | 221,512,000 | 225,073,000 | $ 236,607,000
Depreciation and amortization | (87,193,000) | (78,174,000) | (80,102,000)
Other operating expenses | (67,784,000) | (72,056,000) | (71,293,000)
Interest and other income | 1,555,000 | 1,415,000 | 1,671,000
Interest expense | (55,727,000) | (52,803,000) | (51,843,000)
Gain on extinguishment of debt | 83,635,000 |  |
Loss on impairment |  | (89,826,000) |
Gain on sales of real estate assets | 630,000 | 3,056,000 | 555,000
Net income (loss) | 96,628,000 | (63,315,000) | 35,595,000
Equity in earnings of unconsolidated affiliates | $ 4,940,000 | $ 14,677,000 | $ 22,939,000

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