Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Cash Equivalents, at Carrying Value	$ 8,100,000	$ 17,800,000
Allowance for Doubtful Accounts Receivable	1,526,000	1,415,000
Closed store lease liabilities	635,000	756,000
Self Insurance, Maximum of Workers Compensation Claims Liability per Associate per Claim	2,000,000
Cost of Goods Sold, Vendor Allowances	75,100,000	66,500,000	60,300,000
Vendor Paid Cooperative Advertising Credits	16,400,000	18,200,000	18,800,000
Accounts Receivable, Earned Advertising Credits	609,000	95,000
Accounts Receivable, Earned Promotional Discounts	4,600,000	4,500,000
Unearned Income for Vendor Programs	861,000	1,100,000
Advertising Expense	23,500,000	24,700,000	25,100,000
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
After March 1, 2013 [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