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Noncontrolling and Redeemable Noncontrolling Interests (Tables) | 3 Months Ended
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Mar. 31, 2021
Noncontrolling Interest [Abstract] |
Change In Noncontrolling Interest [Table Text Block] | Changes in amounts due to noncontrolling interest holders included in Accruals and other liabilities on the Unaudited Condensed Consolidated Balance Sheets for the year ended December 31, 2020 and three months ended March 31, 2021 were as follows:
| Noncontrolling Interests
Balance at December 31, 2019 | $ | 14,028 |
Income attributable to noncontrolling interests | 21,774 |
Distributions made | (15,192) |
Other | 94 |
Balance at December 31, 2020 | $ | 20,704 |
Income attributable to noncontrolling interests | 4,491 |
Distributions made | (5,285) |
Other | 36 |
Balance at March 31, 2021 | $ | 19,946 |
Noncontrolling Interest [Table Text Block] | Changes in the Company’s ownership interests in our less than 100% owned subsidiaries during the three months ended March 31, 2021 and 2020 were as follows:
| Three Months Ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
Net income attributable to MDC Partners Inc. | $ | 5,010 |  |  | $ | 1,002 |  |  |  |  |
Transfers from the noncontrolling interest: |  |  |  |  |  |  |
Decrease in MDC Partners Inc. paid-in capital for purchase of redeemable noncontrolling interests and noncontrolling interests | (330) |  |  | (503) |  |  |  |  |
Net transfers from noncontrolling interests | $ | (330) |  |  | $ | (503) |  |  |  |  |
Change from Net income attributable to MDC Partners Inc. and transfers to noncontrolling interests | $ | 4,680 |  |  | $ | 499 |  |  |  |  |
Redeemable Noncontrolling Interest [Table Text Block] | The following table presents changes in redeemable noncontrolling interests:
| Three Months Ended March 31, 2021 |  | Year Ended December 31, 2020
Beginning Balance | $ | 27,137 |  |  | $ | 36,973 |
Redemptions | — |  |  | (12,289) |
Granted | — |  |  | — |
Changes in redemption value | (1,681) |  |  | 2,800 |
Currency translation adjustments | (104) |  |  | (347) |
Ending Balance | $ | 25,352 |  |  | $ | 27,137 |

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- Definition Change In Noncontrolling Interest [Table Text Block] + References No definition available. + Details
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- Definition Noncontrolling Interest [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
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