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Dispositions of Real Estate and Discontinued Operations - Schedule of Results of Discontinued Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Other income (expense): |  |  |
Income tax benefit (expense) | $ 1,000 | $ 10,000 | $ 12,000
Held-for-sale |  |  |
Revenues: |  |  |
Rental and related revenues | 7,535 | 97,877 | 152,576
Resident fees and services | 114,936 | 621,253 | 583,653
Income from direct financing leases | 0 | 0 | 20,815
Total revenues | 122,471 | 719,130 | 757,044
Costs and expenses: |  |  |
Interest expense | 3,900 | 10,538 | 8,007
Depreciation and amortization | 0 | 143,194 | 224,798
Operating | 122,571 | 550,226 | 474,126
Transaction costs | 76 | 20,426 | 6,780
Impairments and loan loss reserves (recoveries), net | 32,736 | 201,344 | 208,229
Total costs and expenses | 159,283 | 925,728 | 921,940
Other income (expense): |  |  |
Gain (loss) on sales of real estate, net | 414,721 | 460,144 | 22,940
Other income (expense), net | 4,189 | 5,475 | 17,060
Total other income (expense), net | 418,910 | 465,619 | 40,000
Income (loss) before income taxes and equity income (loss) from unconsolidated joint ventures | 382,098 | 259,021 | (124,896)
Income tax benefit (expense) | 969 | 9,913 | 11,783
Equity income (loss) from unconsolidated joint ventures | 5,135 | (1,188) | (2,295)
Income (loss) from discontinued operations | $ 388,202 | $ 267,746 | $ (115,408)

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