SCHEDULE I: CONDENSED FINANCIAL INFORMATION OF REGISTRANT - STATEMENTS OF INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2021	Dec. 30, 2020	Dec. 25, 2019
Condensed Income Statements, Captions [Line Items]
General and administrative expenses	$ 85,996	$ 64,250	$ 65,649
TOTAL EXPENSES	755,746	566,743	568,834
INCOME (LOSS) FROM OPERATIONS	(15,853)	(43,876)	25,685
Interest expense	(1,577)	(815)	(434)
INCOME (LOSS) BEFORE INCOME TAXES	(17,335)	(45,477)	27,514
Income tax expense (benefit)	(7,224)	57	3,386
Net income (loss) (including amounts attributable to non-controlling interests)	(10,111)	(45,534)	24,128
Parent Company
Condensed Income Statements, Captions [Line Items]
Intercompany revenue		1,560	2,018
Revenues	2,878	1,560	2,018
General and administrative expenses	2,491	2,179	1,683
TOTAL EXPENSES	2,491	2,179	1,683
INCOME (LOSS) FROM OPERATIONS	387	(619)	335
Equity in net income (loss) from SSE Holdings	(19,393)	(41,152)	19,831
Other Operating Income (Expense), Net	(25,593)	(1,147)	808
Interest expense	(867)	0	(150)
INCOME (LOSS) BEFORE INCOME TAXES	(45,466)	(42,918)	20,824
Income tax expense (benefit)	(17,583)	(760)	997
Net income (loss) (including amounts attributable to non-controlling interests)	$ (27,883)	$ (42,158)	$ 19,827