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Receivables (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 24, 2020	Dec. 25, 2019
Receivables, net:
Trade accounts receivable from franchisees	$ 15,286	$ 14,551
Financing receivables from franchisees	1,499	2,230
Allowance for doubtful accounts	(1,249)	(274)
Total receivables, net	19,049	27,488
Other noncurrent assets:
Financing receivables from franchisees	181	364
Additional bad debt expense	1,000
Vendor receivables
Receivables, net:
Other receivables, gross, current	768	3,260
Credit card receivables
Receivables, net:
Other receivables, gross, current	497	6,806
Other
Receivables, net:
Other receivables, gross, current	$ 2,248	$ 915

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