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Note H - Weighted Average Shares Outstanding (Tables) | 9 Months Ended
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Jan. 31, 2015
Weighted Average Shares Outstanding [Abstract] |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | Three Months Ended January 31, |  | Nine Months Ended January 31,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
Weighted average shares outstanding-basic |  |  | 8,587,761 |  |  |  | 8,917,826 |  |  |  | 8,636,036 |  |  |  | 8,984,958 |
Dilutive options and restricted stock |  |  | 448,325 |  |  |  | 452,809 |  |  |  | 431,159 |  |  |  | 464,422 |
Weighted average shares outstanding-diluted |  |  | 9,036,086 |  |  |  | 9,370,635 |  |  |  | 9,067,195 |  |  |  | 9,449,380 |
Antidilutive securities not included: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | 74,000 |  |  |  | 80,000 |  |  |  | 77,667 |  |  |  | 73,333 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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