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Note 5 - Diluted Net Income Per Share (Tables) | 9 Months Ended
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Feb. 28, 2016
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended February 28, 2016 |  |  | Three Months Ended March 1, 2015 |  |  | Nine Months Ended February 28, 2016 |  |  | Nine Months Ended March 1, 2015 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income applicable to Common Stockholders |  | $ | (21,190 | ) |  | $ | 3,772 |  |  | $ | (16,370 | ) |  | $ | 9,348 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares for basic net (loss) income per share |  |  | 27,054 |  |  |  | 26,886 |  |  |  | 27,026 |  |  |  | 26,863 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and restricted stock units |  |  | — |  |  |  | 477 |  |  |  | — |  |  |  | 451 |
Weighted average shares for diluted net (loss) income per share |  |  | 27,054 |  |  |  | 27,363 |  |  |  | 27,026 |  |  |  | 27,314 |
Diluted net (loss) income per share |  | $ | (0.78 | ) |  | $ | 0.14 |  |  | $ | (0.61 | ) |  | $ | 0.34 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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