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Goodwill (Detail) - USD ($)	12 Months Ended
	May. 03, 2015	Apr. 27, 2014	Apr. 28, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
beginning balance	$ 11,462,000	$ 11,462,000	$ 11,462,000
loss on impairment	0	0	0
acquisitions	0	0	0
ending balance	$ 11,462,000	$ 11,462,000	$ 11,462,000

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267



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-Publisher FASB



-Name Accounting Standards Codification



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-Section 45



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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 1



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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 2



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 45



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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-Paragraph 28



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-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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-Publisher FASB



-Name Accounting Standards Codification



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-SubTopic 20



-Section 50



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