Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
1 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
Feb. 03, 2015 |
Jul. 01, 2015 |
Jun. 25, 2014 |
Jul. 01, 2015 |
Jul. 01, 2015 |
Jun. 25, 2014 |
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| Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | |||||||||
| Less: net loss prior to the Organizational Transactions | $ (13,049) | $ 5,145 | $ 1,949 | $ 6,934 | $ (6,115) | $ 3,041 | |||
| Less: net loss attributable to non-controlling interests | (4,027) | 0 | (5,435) | 0 | |||||
| Net income attributable to Shake Shack Inc. | $ 1,118 | $ 1,949 | $ (11,550) | $ 3,041 | |||||
| Denominator: | |||||||||
| Weighted-average shares of Class A common stock outstanding/weighted-average units outstanding—basic (shares) | [1] | 12,058 | 29,963 | 12,006 | 29,963 | ||||
| Effect of dilutive securities: | |||||||||
| Weighted-average shares of Class A common stock outstanding/weighted-average units outstanding—diluted (shares) | [1] | 13,339 | 30,127 | 12,006 | 30,126 | ||||
| Earnings per share of Class A common stock/earnings per unit—basic (in USD per share) | [1] | $ 0.09 | $ 0.07 | $ (0.96) | $ 0.10 | ||||
| Earnings per share of Class A common stock/earnings per unit—diluted (in USD per share) | [1] | $ 0.08 | $ 0.06 | $ (0.96) | $ 0.10 | ||||
| Restricted Stock | |||||||||
| Effect of dilutive securities: | |||||||||
| Incremental common shares | 0 | 164 | 0 | 163 | |||||
| Stock options | |||||||||
| Effect of dilutive securities: | |||||||||
| Incremental common shares | 1,281 | 0 | 0 | 0 | |||||
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