Revenue Contract Balances (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Dec. 31, 2017
Contract balances [Line Items]
Receivables for franchise royalties and fees	$ 47,762
Restricted Accounts and Notes Receivable	42,947
Deferred franchise fees at beginning of period	102,492
Deferred franchisee fees, current	10,034
Deferred franchise fees, noncurrent	92,727	$ 10,881
Revenue recognized during the period	(2,688)
New deferrals due to cash received and other	2,957
Deferred franchise fees at end of period	$ 102,761