REFRANCHISING - Schedule of Operating Results of Refranchising Program (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2023	Mar. 27, 2022
Long Lived Assets Held-for-sale [Line Items]
Refranchising loss	$ 159	$ 548
Restaurant sales | Assets classified as held for sale
Long Lived Assets Held-for-sale [Line Items]
Restaurant costs and expenses, net of revenue	300	500
Gain on store sales or closures	(100)	0
Refranchising loss	$ 200	$ 500