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NON-CONTROLLING INTERESTS - Changes in Ownership Interests in SSE Holdings (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2017	Sep. 28, 2016	Sep. 27, 2017	Sep. 28, 2016
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Parent	$ 4,997	$ 3,766	$ 12,143	$ 8,526
Net unrealized losses related to available-for-sale securities	67	(8)	64	(16)
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc.	5,963	8,486	18,651	24,023
Redemption or Exchange of Units
Noncontrolling Interest [Line Items]
Increase (decrease) in additional paid-in capital	841	4,708	2,883	15,086
Employee Stock Option
Noncontrolling Interest [Line Items]
Increase (decrease) in additional paid-in capital	78	17	3,580	421
Accumulated Other Comprehensive Loss
Noncontrolling Interest [Line Items]
Net unrealized losses related to available-for-sale securities	$ 47	$ (5)	$ 45	$ (10)

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- Definition

This element represents the total net income attributable to the parent for the period and the effect of net changes during the period impacting the parent's ownership interest in a subsidiary as it relates to the total (consolidated) equity attributable to the parent. The changes to the parent's ownership interest in a subsidiary represented by this element did not result in a deconsolidation of the subsidiary from the consolidated financial statements.

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