Income Taxes Income Taxes (Details Textuals) - USD ($)	12 Months Ended
	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Income Tax Contingency [Line Items]
Refranchising loss	$ 9,072,000	$ 17,108,000	$ 0
Deferred Tax Assets, Valuation Allowance	11,326,000	5,299,000
Unrecognized Tax Benefits, net	6,900,000	6,100,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(200,000)	200,000	$ (300,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,100,000	$ 900,000
Refranchised Cafe [Member]
Income Tax Contingency [Line Items]
Refranchising loss	$ 7,000,000