Retirement Plans - Fair Value (Details) - Recurring - USD ($) $ in Thousands	Mar. 04, 2017	Feb. 27, 2016
Retirement Plans
Total assets at fair value	$ 118,658	$ 110,217
International equity
Retirement Plans
Total assets at fair value	15,348	14,414
Large Cap
Retirement Plans
Total assets at fair value	32,413	28,188
Small-Mid Cap
Retirement Plans
Total assets at fair value	14,083	11,684
Long Term Credit Bond Index
Retirement Plans
Total assets at fair value	47,694	43,130
20+ Year Treasury STRIPS
Retirement Plans
Total assets at fair value	7,563	10,929
Intermediate Fixed Income
Retirement Plans
Total assets at fair value	639	41
Short Term Investments
Retirement Plans
Total assets at fair value	$ 918	$ 1,831

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant