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Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2020	Dec. 25, 2019
Receivables, net:
Trade accounts receivable from franchisees	$ 15,535	$ 14,551
Other receivables from franchisees	2,104	2,230
Allowance for doubtful accounts	(1,699)	(274)
Total receivables, net	21,349	27,488
Other noncurrent assets:
Financing receivables from franchisees	502	364
Expected credit losses	1,500
Vendor receivables
Receivables, net:
Other receivable, gross, current	2,199	3,260
Credit card receivables
Receivables, net:
Other receivable, gross, current	542	6,806
Other
Receivables, net:
Other receivable, gross, current	2,668	$ 915
Trade Accounts Receivable, COVID Deferrals
Receivables, net:
Trade accounts receivable from franchisees	$ 5,700

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