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Significant Accounting Policies - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 28, 2013 | Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
Significant Accounting Policies [Line Items] |  |  |  |
Dividends per common share | $ 0.35 | $ 0.35 | $ 0.73 | $ 0.21
Dividends payable | $ 15,921,000 | $ 15,921,000 |  |
Dividend payable date |  | Jan. 16, 2014 |  |
Dividend record date |  | Dec. 27, 2013 |  |
Dividend declared date |  | Dec. 11, 2013 |  |
Stock options excluded from calculation of diluted earnings per share, antidilutive |  | 143,000 | 321,000 | 220,244
Buildings And Improvements |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Depreciated life |  | Over 30 years |  |
Trailing Equipment | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Depreciated life |  | 7 years |  |
Trailing Equipment | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Depreciated life |  | 10 years |  |
Hardware And Software | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Depreciated life |  | 3 years |  |
Hardware And Software | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Depreciated life |  | 7 years |  |
Commercial Trucking Claims |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Company retained liability per claim | 5,000,000 | 5,000,000 |  |
General Liability Claim |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Company retained liability per claim | 1,000,000 | 1,000,000 |  |
Workers' Compensation Claim |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Company retained liability per claim | 250,000 | 250,000 |  |
Cargo Claim |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Company retained liability per claim | $ 250,000 | $ 250,000 |  |

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- Definition Self Insurance Retained Liability + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + Details
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