v3.21.2

VARIABLE INTEREST ENTITY (Details) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 18, 2018	Dec. 29, 2019	Oct. 03, 2021 USD ($)	Sep. 27, 2020 USD ($)	Oct. 03, 2021 USD ($) agreement	Sep. 27, 2020 USD ($)	Jan. 03, 2021 USD ($)
Variable Interest Entities
Number of installment agreements with franchisees | agreement					1
Net income (loss)			$ 4,786	$ 58	$ 21,913	$ 7,170
Net income (loss) attributable to noncontrolling interest			(48)	$ (270)	494	(613)
Non-controlling interest			784		784		$ 1,278
Property, equipment and leasehold improvements, net			39,174		39,174		32,389
Operating lease right-of-use assets			78,581		78,581		61,634
Inventory			2,949		2,949		$ 2,271
Mercury
Variable Interest Entities
Ownership percentage in VIE	20.00%	20.00%
Clark | Mercury
Variable Interest Entities
Ownership percentage	80.00%
Mercury
Variable Interest Entities
Net income (loss)					617	$ (766)
Property, equipment and leasehold improvements, net			2,700		2,700
Operating lease right-of-use assets			1,700		1,700
Inventory			$ 106		$ 106

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