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Accumulated Other Comprehensive Income (Loss) (Detail Textuals) (USD $)	12 Months Ended
	Jan. 03, 2015	Jan. 04, 2014	Dec. 29, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), net	$ (18,100,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	$ 13,700,000us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	$ (8,100,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Actuarial loss recognized in the statements of operations as a component of net periodic pension costs, net of tax	765,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	1,752,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	2,077,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Tax expense (benefit) of actuarial losses recognized in the statements of operations as a s component of net periodic pension cost		(1,100,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax
Unrecognized actuarial gain (loss) based on updated actuarial assumption included in other comprehensive income, net of tax	(18,897,000)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	11,997,000us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	(10,219,000)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
Tax expense (benefit) of unrecognized actuarial gain (loss) based on updated actuarial assumption included in other comprehensive income		7,800,000us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss recognized in the statements of operations as a component of net periodic pension costs, net of tax	765,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember	1,752,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember	2,077,000us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
Unrecognized actuarial gain (loss) based on updated actuarial assumption included in other comprehensive income, net of tax	$ (18,416,000)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember	$ 12,158,000us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember	$ (10,322,000)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

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Amount of tax expense (benefit) related to (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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