Stockholder's Equity Public Offering (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			6 Months Ended	12 Months Ended
	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Dec. 28, 2014	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012	Apr. 30, 2014
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues					11,500,000
Shares Issued, Price Per Share								$ 6.20
Proceeds from public stock offering, net of expenses					$ 67,327	$ 0	$ 0
Restaurants Acquired	94	25	4	119	123		278
Public Offering [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues					10,000,000
Over-Allotment Option [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues					1,500,000