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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 |  |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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