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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Revenues: |  |  |  |
Revenues | $ 346,341 | $ 410,311 | $ 709,065 | $ 852,778
Expenses: |  |  |  |
Property operating expenses | 264,632 | 301,915 | 552,023 | 618,500
Depreciation and amortization | 67,888 | 68,825 | 134,041 | 137,255
General and administrative | 9,126 | 7,312 | 16,668 | 16,144
Acquisition and certain other transaction related costs | 12,071 | 87 | 12,071 | 750
Impairment of assets | 0 | 31,175 | (174) | 42,409
Total expenses | 353,717 | 409,314 | 714,629 | 815,058
Gain (loss) on sale of properties | 30,760 | (168) | 30,638 | 2,614
Gains and losses on equity securities, net | (3,849) | 11,974 | (12,188) | 2,031
Interest and other income | 16,038 | 7,736 | 18,873 | 7,874
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $3,017, $1,617, $5,829 and $3,126, respectively) | (67,657) | (43,974) | (127,748) | (85,624)
Gain on lease termination | 0 | 0 | 0 | 22,896
Loss on early extinguishment of debt | (370) | (181) | (2,410) | (427)
Loss from continuing operations before income tax expense | (32,454) | (23,616) | (98,399) | (12,916)
Income tax expense | (191) | (1,126) | (429) | (683)
Net loss | (32,645) | (24,742) | (98,828) | (13,599)
Net income attributable to noncontrolling interest | (1,577) | (1,330) | (2,899) | (2,738)
Net loss attributable to common shareholders | $ (34,222) | $ (26,072) | $ (101,727) | $ (16,337)
Weighted average common shares outstanding (basic) (in shares) | 237,871 | 237,700 | 237,853 | 237,684
Weighted average common shares outstanding (diluted) (in shares) | 237,871 | 237,700 | 237,853 | 237,684
Per common share amounts (basic and diluted): |  |  |  |
Net loss attributable to common shareholders - basic (in dollars per share) | $ (0.14) | $ (0.11) | $ (0.43) | $ (0.07)
Net loss attributable to common shareholders - diluted (in dollars per share) | $ (0.14) | $ (0.11) | $ (0.43) | $ (0.07)
Rental income |  |  |  |
Revenues: |  |  |  |
Revenues | $ 102,394 | $ 106,207 | $ 205,152 | $ 216,705
Residents fees and services |  |  |  |
Revenues: |  |  |  |
Revenues | $ 243,947 | $ 304,104 | $ 503,913 | $ 636,073

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