CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		12 Months Ended
		Dec. 27, 2017	Dec. 28, 2016	Dec. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 8,884	$ 22,146	$ 3,124
Available-for-sale securities:
Change in net unrealized holding (losses)	[1]	(94)	(35)	(11)
Less: reclassification adjustments for net realized losses included in net income	[1]	47	19	0
Net change	[1]	(47)	(16)	(11)
OTHER COMPREHENSIVE LOSS, NET OF TAX		(47)	(16)	(11)
COMPREHENSIVE INCOME		8,837	22,130	3,113
Less: comprehensive income attributable to non-controlling interests		9,191	9,694	11,894
COMPREHENSIVE INCOME ATTRIBUTABLE TO SHAKE SHACK INC.		$ (354)	$ 12,436	$ (8,781)

[1] Net of tax benefit of $0 for fiscal years ended December 27, 2017, December 28, 2016 and December 30, 2015.