Acquisitions and Divestitures - Additional Information (Detail) - USD ($)						3 Months Ended								12 Months Ended
	Oct. 30, 2015	Aug. 24, 2015	May. 01, 2015	Feb. 27, 2015	Jan. 30, 2015	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013	Oct. 24, 2014	May. 23, 2014
Business Acquisition [Line Items]
Goodwill						$ 117,954,000				$ 106,220,000				$ 117,954,000	$ 106,220,000	$ 102,049,000
Cash purchase														81,707,000	41,588,000	0
Bargain purchase gain														2,011,000	0	0
Unfavorable fair value adjustment to contingent consideration liability														3,576,000	1,077,000	0
Gain on exchange of franchise territory														8,807,000	0	0
Net sales						619,716,000	$ 618,806,000	$ 614,683,000	$ 453,253,000	$ 440,638,000	$ 457,676,000	$ 459,473,000	$ 388,582,000	2,306,458,000	1,746,369,000	1,641,331,000
Operating Income (loss)														98,144,000	85,967,000	73,647,000
Gain on sale of business							$ 22,700,000							22,651,000	0	0
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Exchange [Member] | Jackson Territory [Member]
Business Acquisition [Line Items]
Carrying value of assets exchanged			$ 17,500,000
Gain on exchange of franchise territory			8,800,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | BYB Brands Inc [Member]
Business Acquisition [Line Items]
Net sales														23,900,000	34,100,000	34,200,000
Operating Income (loss)														$ 1,800,000	$ (400,000)	$ 900,000
Cash purchase price on sale of brands		$ 26,400,000
Gain on sale of business		$ 22,700,000
Johnson City And Morristown Territory Acquisition [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														May 23, 2014
Goodwill																		$ 571,000
Goodwill recognized, expected to be deductible for tax purposes																		$ 100,000
Knoxville Tennessee Territory Acquisition [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														Oct. 24, 2014
Goodwill																	$ 4,698,000
Goodwill recognized, expected to be deductible for tax purposes																	$ 4,500,000
Cleveland and Cookeville, Tennessee Territory Acquisitions [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														Jan. 30, 2015
Goodwill					$ 1,280,000
Goodwill recognized, expected to be deductible for tax purposes					1,000,000
Cash purchase					$ 13,200,000
Louisville, Kentucky and Evansville, Indiana [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														Feb. 27, 2015
Goodwill				$ 1,523,000
Goodwill recognized, expected to be deductible for tax purposes				300,000
Cash purchase				$ 18,000,000
Paducah And Pikeville Kentucky Territory Acquisitions [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														May 01, 2015
Goodwill			942,000
Goodwill recognized, expected to be deductible for tax purposes			100,000
Cash purchase			7,500,000
Norfolk, Fredericksburg and Staunton, Virginia; and Elizabeth City, North Carolina Territory Acquisitions [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														Oct. 30, 2015
Goodwill	$ 6,574,000
Goodwill recognized, expected to be deductible for tax purposes	0
Cash purchase	26,100,000
Annapolis, Maryland Make Ready Center Acquisition [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														Oct. 30, 2015
Goodwill	0
Business combination, consideration transferred	5,300,000
Bargain purchase gain	2,000,000
Deferred tax liability, bargain purchase gain	$ 1,300,000
Asset Purchase Agreements [Member]
Business Acquisition [Line Items]
Contingent consideration liability range, low						9,000,000								$ 9,000,000
Contingent consideration liability range, high						16,000,000								16,000,000
Contingent consideration liability						$ 136,600,000								136,600,000
Unfavorable fair value adjustment to contingent consideration liability														$ 3,600,000
Lexington Exchange Transaction [Member]
Business Acquisition [Line Items]
Effective date of business acquisition														May 01, 2015
Goodwill recognized, expected to be deductible for tax purposes			2,500,000
Net asset value after deducting retained assets and liabilities			$ 10,500,000
2014 and 2015 Acquisitions [Member]
Business Acquisition [Line Items]
Net sales														$ 437,000,000
Operating Income (loss)														$ 6,900,000