Acquisition (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended			43 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011	Jan. 03, 2016	May 30, 2012
Business Acquisition [Line Items]
Number of Restaurants Acquired	278
Number of Restaurants	572
Sale of Stock, Percentage of Ownership after Transaction	28.90%
Purchase Price					$ 74,537
Total Consideration					74,537
Number of States for Right of First Refusal					20
Loan, Payment Period	5 years
Restaurants to be remodeled				455
Business Acquisition, Cost of Acquired Entity, Equity Interests Issued and Issuable					57,711
Acquisition of restaurants from BKC, net of cash acquired	12,135	0	0
Less: Cash acquired					417
Less: Additional consideration accrued but not paid					(4,274)
Convertible Preferred Stock, Common Shares Issuable upon Conversion					9,414,580
Sale of Stock, Price Per Share					$ 6.13
LeasedRestaurants [Member]
Business Acquisition [Line Items]
Number of Restaurants					81
Restaurants on sub-lease [Member]
Business Acquisition [Line Items]
Number of Restaurants					197
Cash paid for cash and inventory [Member]
Business Acquisition [Line Items]
Purchase Price					3,800
Total Consideration					3,800
Other cash payments [Member]
Business Acquisition [Line Items]
Purchase Price					3,600
Total Consideration					3,600
ROFR Payment Paid at Closing [Member] [Member]
Business Acquisition [Line Items]
Purchase Price					200
Total Consideration					200
Other cash payments paid at closing [Member]
Business Acquisition [Line Items]
Purchase Price					9,400
Total Consideration					9,400
Business Acquisition, Cost of Acquired Entity, Purchase Price, Cash [Member]
Business Acquisition [Line Items]
Cash purchase price					$ 16,826