Cash and Receivables Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance, Current	$ 4,546	$ 4,030	$ 3,488
Beginning Balance, Noncurrent	0	26	257
Provision for Doubtful Accounts, Franchisees and other	2,562	579	390
Uncollectible accounts written-off, net of recoveries	(169)	(89)	(79)
Ending Balance, Current	4,939	4,546	4,030
Ending Balance, Noncurrent	2,000	0	26
Allowances for Doubtful Accounts Receivable, Balance	$ 6,939	$ 4,546	$ 4,056