Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2022	Dec. 29, 2021	Dec. 30, 2020
Receivables, net:
Trade accounts receivable from franchisees	$ 13,314	$ 13,430
Other receivables from franchisees	6,731	1,027
Allowance for doubtful accounts	(376)	(574)
Total receivables, net	25,576	19,621
Other noncurrent assets:
Financing receivables from franchisees	0	293
Expected credit expense (reversal)	(100)	(1,100)	$ 1,500
Vendor receivables
Receivables, net:
Other receivable, gross, current	3,466	4,041
Credit card receivables
Receivables, net:
Other receivable, gross, current	896	747
Other
Receivables, net:
Other receivable, gross, current	$ 1,545	$ 950