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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 28, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | The following table presents potentially dilutive securities excluded from the computations of diluted earnings per share of Class A common stock for fiscal 2016, 2015 and 2014.
|  |  | 2016 |  | 2015 |  | 2014
Stock options | 125 |  | (1) |  | 2,574,981 |  | (2) |  | — |  |
Performance stock units | 26,860 |  | (3) |  | — |  |  |  | — |  |
Shares of Class B common stock | 11,253,592 |  | (4) |  | 16,460,741 |  | (4) |  | — |  |
(1) | Weighted-average number of securities excluded from the computation of diluted earnings per share of Class A common stock because the exercise price of the stock options exceeded the average market price.
(2) | Excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive.
(3) | Weighted-average number of securities excluded from the computation of diluted earnings per share of Class A common stock because the performance conditions were not met for a portion of the fiscal year.
(4) | Shares of our Class B common stock are considered potentially dilutive shares of Class A common stock. Amounts have been excluded from the computations of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted and two-class methods.
The following table presents potentially dilutive securities excluded from the computations of diluted earnings per share of Class A common stock for fiscal 2016, 2015 and 2014.
|  |  | 2016 |  | 2015 |  | 2014
Stock options | 125 |  | (1) |  | 2,574,981 |  | (2) |  | — |  |
Performance stock units | 26,860 |  | (3) |  | — |  |  |  | — |  |
Shares of Class B common stock | 11,253,592 |  | (4) |  | 16,460,741 |  | (4) |  | — |  |
(1) | Weighted-average number of securities excluded from the computation of diluted earnings per share of Class A common stock because the exercise price of the stock options exceeded the average market price.
(2) | Excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive.
(3) | Weighted-average number of securities excluded from the computation of diluted earnings per share of Class A common stock because the performance conditions were not met for a portion of the fiscal year.
(4) | Shares of our Class B common stock are considered potentially dilutive shares of Class A common stock. Amounts have been excluded from the computations of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted and two-class methods.
Schedule of earnings per share | The following table sets forth reconciliations of the numerators and denominators used to compute basic and diluted earnings per share of Class A common stock for fiscal 2016, 2015 and 2014.
|  |  | 2016 |  |  | 2015 |  |  | 2014 |
Numerator: |  |  |  |  |
| Net income | $ | 22,146 |  |  | $ | 3,124 |  |  | $ | 2,118 |
| Less: net income attributable to non-controlling interests | 9,700 |  |  | 11,900 |  |  | — |
| Net income (loss) attributable to Shake Shack Inc. | $ | 12,446 |  |  | $ | (8,776 | ) |  | $ | 2,118 |
Denominator: |  |  |  |  |
| Weighted-average shares of Class A common stock outstanding—basic | 22,956 |  |  | 13,588 |  |  | 29,977 |
| Effect of dilutive securities: |  |  |  |  |
|  | Restricted Class B units | — |  |  | — |  |  | 145 |
|  | Stock options | 493 |  |  | — |  |  | — |
| Weighted-average shares of Class A common stock outstanding—diluted | 23,449 |  |  | 13,588 |  |  | 30,122 |
Earnings per share of Class A common stock—basic | $ | 0.54 |  |  | $ | (0.65 | ) |  | $ | 0.07 |
Earnings per share of Class A common stock—diluted | $ | 0.53 |  |  | $ | (0.65 | ) |  | $ | 0.07 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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