Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Apr. 28, 2017	Apr. 29, 2016	Apr. 28, 2017	Apr. 29, 2016
Cash dividends per share (in dollars per share)	$ 0.34	$ 0.34	$ 1.36	$ 1.30
Treasury Stock
Shares held in rabbi trust	1,160,000		1,160,000
Capital in Excess of Par Value
Value of shares held in deferred trust	$ 14,356	$ 9,502	$ 14,356	$ 9,502

Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: 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

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Aggregate value of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 25
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=6409836&loc=d3e19850-108362

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=6409836&loc=d3e19833-108362

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 25
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65888597&loc=d3e16701-113920

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