Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 28, 2013	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
SERP Investment		$ 8,752,000	$ 7,058,000		$ 6,800,000
Cash Equivalents, at Carrying Value		7,200,000	992,000
Allowance for Doubtful Accounts Receivable		1,882,000	1,526,000
Impairment of Long-Lived Assets Held-for-use	2,100,000
Self Insurance, Maximum of Workers Compensation Claims Liability per Associate per Claim		2,000,000
Cost of Goods Sold, Vendor Allowances		76,400,000	75,100,000	66,500,000
Vendor Paid Cooperative Advertising Credits		16,000,000	16,400,000	18,200,000
Accounts Receivable, Earned Advertising Credits		440,000	609,000
Accounts Receivable, Earned Promotional Discounts		5,800,000	4,600,000
Unearned Income for Vendor Programs		911,000	861,000
Advertising Expense		23,500,000	23,500,000	24,700,000
Depreciation Expense [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			(11,500,000)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income			(6,800,000)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share			$ (0.25)
Prior to March 1, 2012 [Member]
Self Insurance, Annual Maximum of Health Claims Liability per Associate		750,000
Between March 1, 2012 to March 1, 2013 [Member]
Self Insurance, Annual Maximum of Health Claims Liability per Associate		1,250,000
Between March 1, 2013 to March 1, 2014 [Member]
Self Insurance, Annual Maximum of Health Claims Liability per Associate		2,000,000
Maximum [Member]
Property and Casualty Insurance, Deductible		1,000,000
Minimum [Member]
Property and Casualty Insurance, Deductible		$ 100,000