CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2023	Sep. 28, 2022	Sep. 27, 2023	Sep. 28, 2022
TOTAL REVENUE	$ 276,207	$ 227,814	$ 801,290	$ 661,957
Shack-level operating expenses:
Food and paper costs	77,180	67,774	224,752	193,645
Labor and related expenses	76,233	64,638	225,655	190,954
Other operating expenses	37,307	33,680	108,352	96,002
Occupancy and related expenses	20,300	17,337	58,684	50,270
General and administrative expenses	30,939	26,931	93,726	87,804
Depreciation and amortization expense	23,130	18,647	66,704	53,589
Pre-opening costs	4,969	3,041	14,103	8,576
Impairment and loss on disposal of assets	492	592	2,098	1,697
TOTAL EXPENSES	270,550	232,640	794,074	682,537
INCOME (LOSS) FROM OPERATIONS	5,657	(4,826)	7,216	(20,580)
Other income, net	3,441	1,482	9,505	1,731
Interest expense	(433)	(475)	(1,241)	(1,145)
INCOME (LOSS) BEFORE INCOME TAXES	8,665	(3,819)	15,480	(19,994)
Income tax expense (benefit)	529	(1,508)	1,743	(5,098)
NET INCOME (LOSS)	8,136	(2,311)	13,737	(14,896)
Reallocation of net income attributable to non-controlling interests from the assumed conversion of Class B shares	509	(287)	696	(1,522)
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ 7,627	$ (2,024)	$ 13,041	$ (13,374)
Earnings (loss) per share of Class A common stock:
Basic (in dollars per share)	$ 0.19	$ (0.05)	$ 0.33	$ (0.34)
Diluted (in dollars per share)	$ 0.19	$ (0.05)	$ 0.31	$ (0.34)
Weighted average shares of Class A common stock outstanding:
Basic (in shares)	39,460	39,274	39,402	39,221
Diluted (in shares)	43,978	39,274	43,884	39,221
Shack sales
TOTAL REVENUE	$ 264,980	$ 219,501	$ 771,044	$ 639,346
Licensing revenue
TOTAL REVENUE	$ 11,227	$ 8,313	$ 30,246	$ 22,611