CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 24, 2020	Jun. 26, 2019	Jun. 24, 2020	Jun. 26, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (18,031)	$ 11,171	$ (19,110)	$ 14,778
Other comprehensive income, net of tax(1):
Change in foreign currency translation adjustment	0	0	1	0
Net change	0	0	1	0
OTHER COMPREHENSIVE INCOME	0	0	1	0
COMPREHENSIVE INCOME (LOSS)	(18,031)	11,171	(19,109)	14,778
Less: comprehensive income (loss) attributable to non-controlling interest	(1,820)	2,141	(1,939)	3,202
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ (16,211)	$ 9,030	$ (17,170)	$ 11,576