CONDENSED CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 24, 2020	Jun. 26, 2019	Jun. 24, 2020	Jun. 26, 2019
TOTAL REVENUE	$ 91,786	$ 152,713	$ 234,956	$ 285,322
Shack-level operating expenses:
Food and paper costs	30,027	42,899	69,591	80,890
Labor and related expenses	30,933	40,197	72,699	77,290
Other operating expenses	14,304	16,755	32,083	32,323
Occupancy and related expenses	12,323	11,873	24,881	22,772
General and administrative expenses	14,017	15,393	30,208	29,330
Depreciation expense	12,089	9,799	23,857	18,765
Pre-opening costs	1,734	3,549	3,977	6,191
Impairment and loss on disposal of assets	434	377	2,522	728
TOTAL EXPENSES	115,861	140,842	259,818	268,289
OPERATING INCOME (LOSS)	(24,075)	11,871	(24,862)	17,033
Other income (loss), net	394	447	301	1,011
Interest expense	(442)	(97)	(554)	(169)
INCOME (LOSS) BEFORE INCOME TAXES	(24,123)	12,221	(25,115)	17,875
Income tax expense (benefit)	(6,092)	1,050	(6,005)	3,097
NET INCOME (LOSS)	(18,031)	11,171	(19,110)	14,778
Less: net income (loss) attributable to non-controlling interests	(1,820)	2,141	(1,939)	3,202
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ (16,211)	$ 9,030	$ (17,171)	$ 11,576
Earnings (loss) per share of Class A common stock:
Basic (in dollars per share)	$ (0.43)	$ 0.30	$ (0.48)	$ 0.39
Diluted (in dollars per share)	$ (0.43)	$ 0.29	$ (0.48)	$ 0.38
Weighted-average shares of Class A common stock outstanding:
Basic (in shares)	37,309	30,122	35,876	29,842
Diluted (in shares)	37,309	31,015	35,876	30,703
Shack sales
TOTAL REVENUE	$ 89,519	$ 147,876	$ 227,567	$ 276,445
Licensing revenue
TOTAL REVENUE	$ 2,267	$ 4,837	$ 7,389	$ 8,877