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Note 7 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Apr. 30, 2016 | May 02, 2015 | May 03, 2014 | Apr. 27, 2013
Internal Revenue Service (IRS) [Member] | Review of Fed Review of Federal Income Tax Returns Three Years Ended April 2013 [Member] |  |  |  |  |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations |  |  | $ 1,907 |  |
Unrecognized Tax Benefits | $ 1,678,000 | $ 1,801,000 | 2,123,000 |  | $ 4,349,000
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions | 59,000 |  |  |  |
Changes in IncomeTax if All Uncertain Tax Positions Prevail | 1,200,000 |  |  |  |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 268,000 | $ 444,000 | $ 2,494,000 | [1] |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 227,000 |  |  |  |
Unrecognized Tax Benefits, Period Increase (Decrease) | $ 42,000 |  |  |  |
[1] | Includes $1,907 related to the Internal Revenue Service review of the Company's federal income tax returns for the three years ended April 2013 noted above.

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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