Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Apr. 29, 2017	Apr. 30, 2016
CURRENT ASSETS
Allowance, accounts receivable	$ 0.6	$ 0.5
Common Stock:
par value (in dollars per share)	$ 0.50	$ 0.50
shares authorized (in shares)	100,000,000	100,000,000
shares issued (in shares)	38,133,925	38,181,985
Treasury Stock:
shares issued (in shares)	1,346,624	1,346,624

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29,30)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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