CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands		3 Months Ended
		Mar. 28, 2018	Mar. 29, 2017
Statement of Comprehensive Income [Abstract]
Net income		$ 4,979	$ 3,862
Available-for-sale securities:
Change in net unrealized holding gains (losses)	[1]	(3)	(9)
Less: reclassification adjustments for net realized losses included in net income	[1]	16	3
Net change		13	(6)
OTHER COMPREHENSIVE INCOME (LOSS)		13	(6)
COMPREHENSIVE INCOME		4,992	3,856
Less: comprehensive income attributable to non-controlling interest		1,474	1,593
COMPREHENSIVE INCOME ATTRIBUTABLE TO SHAKE SHACK INC.		$ 3,518	$ 2,263

[1] Net of tax benefit (expense) of $0 for the thirteen and thirteen weeks ended March 28, 2018 and March 29, 2017.