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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Revenue: |  |
Services | $ 307,585 | $ 327,742
Operating expenses: |  |
Cost of services sold | 186,921 | 222,694
Office and general expenses | 83,946 | 66,354
Depreciation and amortization | 8,176 | 9,206
Impairment and other losses | 875 | 161
Costs and Expenses, Total | 279,918 | 298,415
Operating income | 27,667 | 29,327
Other income (expense): |  |
Interest expense and finance charges, net | (19,065) | (15,611)
Foreign exchange gain (loss) | 2,080 | (14,757)
Other, net | 614 | 16,334
Nonoperating Income (Expense), Total | (16,371) | (14,034)
Income before income taxes and equity in earnings of non-consolidated affiliates | 11,296 | 15,293
Income tax expense | 1,302 | 13,500
Income before equity in earnings of non-consolidated affiliates | 9,994 | 1,793
Equity in losses of non-consolidated affiliates | (493) | 0
Net income | 9,501 | 1,793
Net income attributable to the noncontrolling interest | (4,491) | (791)
Net income attributable to MDC Partners Inc. | 5,010 | 1,002
Net income (loss) attributable to MDC Partners Inc. common shareholders | $ 921 | $ (2,438)
Basic and diluted |  |
Earnings per share, basic | $ 0.01 | $ (0.03)
Earnings per share, diluted | $ 0.01 | $ (0.03)
Weighted Average Number of Common Shares Outstanding: |  |
Weighted Average Number of Shares Outstanding, Basic | 73,392,824 | 72,397,661,000
Weighted Average Number of Shares Outstanding, Diluted | 75,439,066 | 72,397,661,000
Series 4 Convertible Preferred Stock [Domain] | Preferred Stock |  |
Other income (expense): |  |
Accretion on and net income allocated to convertible preference shares | $ (4,089) | $ (3,440)

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