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Quarterly Results of Operations (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | . Quarterly Results of Operations (Unaudited) The following table sets forth a summary of the Company’s consolidated unaudited quarterly results of operations for the years ended December 31, in thousands of dollars, except per share amounts.
| Quarters
| First |  | Second |  | Third |  | Fourth
Revenue: |  |  |  |  |  |  |
2018 | $ | 326,968 |  |  | $ | 379,743 |  |  | $ | 375,830 |  |  | $ | 393,662 |
2017 | $ | 344,700 |  |  | $ | 390,532 |  |  | $ | 375,800 |  |  | $ | 402,747 |
Cost of services sold: |  |  |  |  |  |  |
2018 | $ | 243,030 |  |  | $ | 253,390 |  |  | $ | 238,690 |  |  | $ | 256,088 |
2017 | $ | 237,563 |  |  | $ | 267,822 |  |  | $ | 249,418 |  |  | $ | 268,673 |
Net Income (loss): |  |  |  |  |  |  |
2018 | $ | (28,519 | ) |  | $ | 5,951 |  |  | $ | (13,667 | ) |  | $ | (75,713 | )
2017 | $ | (9,683 | ) |  | $ | 13,467 |  |  | $ | 21,984 |  |  | $ | 231,455 |
Net income (loss) attributable to MDC Partners Inc.: |  |  |  |  |  |  |
2018 | $ | (29,416 | ) |  | $ | 3,406 |  |  | $ | (16,125 | ) |  | $ | (81,598 | )
2017 | $ | (10,566 | ) |  | $ | 11,253 |  |  | $ | 18,493 |  |  | $ | 222,668 |
Income (loss) per common share: |  |  |  |  |  |  |
Basic |  |  |  |  |  |  |
2018 | $ | (0.56 | ) |  | $ | 0.02 |  |  | $ | (0.32 | ) |  | $ | (1.46 | )
2017 | $ | (0.21 | ) |  | $ | 0.14 |  |  | $ | 0.25 |  |  | $ | 3.33 |
Diluted |  |  |  |  |  |  |
2018 | $ | (0.56 | ) |  | $ | 0.02 |  |  | $ | (0.32 | ) |  | $ | (1.46 | )
2017 | $ | (0.21 | ) |  | $ | 0.14 |  |  | $ | 0.24 |  |  | $ | 3.30 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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