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NON-CONTROLLING INTERESTS (Tables) | 9 Months Ended
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Sep. 23, 2020
Noncontrolling Interest [Abstract] |
Schedule of Ownership Interests in SSE Holdings | The following table summarizes the ownership interest in SSE Holdings as of September 23, 2020 and December 25, 2019.
| September 23, 2020 |  | December 25, 2019
| LLC Interests |  | Ownership% |  | LLC Interests |  | Ownership %
Number of LLC Interests held by Shake Shack Inc. | 38,280,102 |  |  | 92.5 | % |  | 34,417,302 |  |  | 91.6 | %
Number of LLC Interests held by non-controlling interest holders | 3,112,002 |  |  | 7.5 | % |  | 3,145,197 |  |  | 8.4 | %
Total LLC Interests outstanding | 41,392,104 |  |  | 100.0 | % |  | 37,562,499 |  |  | 100.0 | %
Schedule of Non-Controlling Interest | The following table summarizes the effects of changes in ownership of SSE Holdings on our equity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.
|  | Thirteen Weeks Ended |  | Thirty-Nine Weeks Ended
| September 23 2020 |  | September 25 2019 |  | September 23 2020 |  | September 25 2019
Net income (loss) attributable to Shake Shack Inc. | $ | (5,559) |  |  | $ | 10,344 |  |  | $ | (22,730) |  |  | $ | 21,920 |
Transfers (to) from non-controlling interests: |  |  |  |  |  |  |
| Increase in additional paid-in capital as a result of the redemption of LLC Interests | 44 |  |  | 1,634 |  |  | 239 |  |  | 7,115 |
| Increase in additional paid-in-capital as a result of the GTC Merger | — |  |  | 19,218 |  |  | — |  |  | 19,218 |
| Increase (decrease) in additional paid-in capital as a result of activity under stock compensation plans and the related income tax effect | 367 |  |  | 1,789 |  |  | 627 |  |  | 2,718 |
| Increase in additional paid-in-capital as a result of the issuance of Class A common stock sold in equity offerings | — |  |  | — |  |  | 135,718 |  |  | — |
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc. | $ | (5,148) |  |  | $ | 32,985 |  |  | $ | 113,854 |  |  | $ | 50,971 |
Redemption of LLC Interests | The following table summarizes redemptions of LLC Interests activity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.
|  | Thirteen Weeks Ended |  | Thirty-Nine Weeks Ended
| September 23 2020 |  | September 25 2019 |  | September 23 2020 |  | September 25 2019
Redemption and acquisition of LLC Interests |  |  |  |  |  |  |
| Number of LLC Interests redeemed by non-controlling interest holders | 5,000 |  |  | 231,599 |  |  | 33,195 |  |  | 1,057,737 |
| Number of LLC Interests acquired in connection with the Gramercy Tavern Merger | — |  |  | 2,690,263 |  |  | — |  |  | 2,690,263 |
| Number of LLC Interests received by Shake Shack Inc. | 5,000 |  |  | 231,599 |  |  | 33,195 |  |  | 1,057,737 |
Issuance of Class A common stock |  |  |  |  |  |  |
| Shares of Class A common stock issued in connection with redemptions of LLC Interests | 5,000 |  |  | 231,599 |  |  | 33,195 |  |  | 1,057,737 |
| Shares of Class A common stock issued in connection with the Gramercy Tavern Merger | — |  |  | 2,690,263 |  |  | — |  |  | 2,690,263 |
Cancellation of Class B common stock |  |  |  |  |  |  |
| Shares of Class B common stock surrendered and canceled | 5,000 |  |  | 231,599 |  |  | 33,195 |  |  | 1,057,737 |
| Shares of Class B common stock surrendered and canceled in connection with the Gramercy Tavern Merger | — |  |  | 2,690,263 |  |  | — |  |  | 2,690,263 |

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