Acquisitions and Dispositions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended																			12 Months Ended				12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012	Dec. 30, 2012 Sale of Company-Owned Restaurants to Franchisees [Member] stores	Jan. 01, 2012 Sale of Company-Owned Restaurants to Franchisees [Member] stores	Dec. 30, 2012 Sale of Restaurant to Unrelated Third Party [Member]	Dec. 29, 2013 Franchisees Exercising Options to Purchase Previously Subleased Properties [Member]	Dec. 30, 2012 Franchisees Exercising Options to Purchase Previously Subleased Properties [Member]	Jan. 01, 2012 Franchisees Exercising Options to Purchase Previously Subleased Properties [Member]	Dec. 29, 2013 Surplus Properties [Member]	Dec. 30, 2012 Surplus Properties [Member]	Jan. 01, 2012 Surplus Properties [Member]	Dec. 30, 2012 Other Dispositions [Member]	Jan. 01, 2012 Other Dispositions [Member]	Dec. 30, 2012 Pisces Acquisition [Member]	Jun. 11, 2012 Pisces Acquisition [Member] stores years Restaurants		Jun. 11, 2012 Pisces Acquisition [Member] Ground Lease [Member] Restaurants	Jun. 11, 2012 Pisces Acquisition [Member] Building Lease [Member] Restaurants	Dec. 30, 2012 Double Cheese Acquisition [Member]	Jul. 13, 2012 Double Cheese Acquisition [Member] stores years		Jul. 13, 2012 Double Cheese Acquisition [Member] Building Lease [Member] Restaurants	Dec. 29, 2013 Franchised Units [Member] stores	Dec. 30, 2012 Franchised Units [Member] stores	Jan. 01, 2012 Franchised Units [Member] stores
Significant Acquisitions and Disposals [Line Items]
Number of Restaurants																30					24
Number of restaurants with lease agreements attached																23
Number of restaurants with lease assumption																		5	2				12
Consideration for acquisition includes post-closing adjustments															$ 18,915					$ 19,181
Cash																55					27
Inventories																149					163
Properties																12,485					12,753
Deferred taxes and other assets																1,773					190
Acquired territory rights																18,390	[1]				2,640	[2]
Favorable ground leases																222					1,147
Capitalized lease obligations																(14,394)					(948)
Deferred vendor incentives																(382)	[3]				(248)	[4]
Unfavorable leases																(992)					(531)
Other liabilities																(952)					(727)
Total identifiable net assets																16,354					14,466
Goodwill	842,544	876,201	870,431													2,561	[5]				4,715	[6]			485	5,620
Weighted average amortization period, acquired territory rights																13					13
Significant changes, franchises purchased during period																								1	2	19
Acquisition, cash paid	4,612	40,608	11,210																						2,594	11,210
Business Acquisition, Total Consideration																										12,270
Cash Acquired from Acquisition																										66
Acquisition, note payable issued																										1,060
Significant Changes, Franchises Assumed During Period																										4
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed																										2,689
Business Combination, Bargain Purchase, Gain Recognized, Amount																										1,659
Proceeds from Sale of Property, Plant, and Equipment	18,958	21,023	6,113	14,059	3,275	1,874	8,653	3,550	1,075	10,305	941	909	599	854
Gain (Loss) on Sale of Property Plant Equipment	$ 4,705	$ (22)	$ 885
Significant Changes, Franchises Sold				30	5

[1] The acquired territory rights had a weighted average amortization period of 13 years. Due to the subsequent sale of this territory, we accelerated the amortization through the date of sale.

[2] The acquired territory rights have a weighted average amortization period of 13 years. Due to the anticipated sale of this territory, we accelerated the amortization through the expected date of sale.

[3] Included in “Other liabilities” at the acquisition date

[4] Included in “Other liabilities” at the acquisition date.

[5] This goodwill is not deductible or amortizable for income tax purposes. In addition, the goodwill was disposed of as a result of the subsequent sale of this territory.

[6] Goodwill is partially amortizable for income tax purposes.