CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 08, 2016	Oct. 10, 2015	Oct. 08, 2016	Oct. 10, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 16,648	$ 15,393	$ 43,982	$ 45,981
Other comprehensive income, before tax
Pension and postretirement liability adjustment	1	204	4	681
Total other comprehensive income, before tax	1	204	4	681
Income tax expense related to items of other comprehensive income		(78)	(1)	(259)
Total other comprehensive income, after tax	1	126	3	422
Comprehensive income	$ 16,649	$ 15,519	$ 43,985	$ 46,403

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=51831270

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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