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Note 9 - Income Per Share (Tables) | 3 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Thirteen weeks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Net Income |  |  | Number of Shares |  |  | Net Income Per Share |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |  |  | (in thousands) |  |  |  |  |  |  |  |  |
Basic EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic calculation |  | $ | 3,354 |  |  | $ | 2,006 |  |  |  | 4,415 |  |  |  | 4,368 |  |  | $ | 0.76 |  |  | $ | 0.46 |
Effect of dilutive employee stock options |  |  | - |  |  |  | - |  |  |  | 173 |  |  |  | 163 |  |  |  | (0.03 | ) |  |  | (0.02 | )
Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted calculation |  | $ | 3,354 |  |  | $ | 2,006 |  |  |  | 4,588 |  |  |  | 4,531 |  |  | $ | 0.73 |  |  | $ | 0.44 |

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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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