Related Parties (Details) $ in Thousands	9 Months Ended
	Oct. 01, 2017 USD ($) Rate shares	Jan. 01, 2017 shares
Related Party Transaction [Line Items]
Preferred stock, shares issued | shares	100	100
Board of directors, number of members	2
Franchise Agreement, Term	20 years
Accounts payable to BKC | $	$ 7,600
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Convertible Preferred Stock, Common Shares Issuable upon Conversion | shares	9,414,580
Preferred stock, ownership percentage if converted | Rate	20.70%
Initial Franchise Fees | $	$ 50
Franchise Term	20 years
Property leases	259
BKC Subleases with third-party lessor [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Property leases	133