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Note 2 - Acquisitions and Dispositions (Details) - Adjusted Pro Forma Effect of the Acquisitions on the Results of Operations (Amega Scientific Corporation [Member], USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Mar. 30, 2014 | Mar. 30, 2013
Amega Scientific Corporation [Member] |  |
Note 2 - Acquisitions and Dispositions (Details) - Adjusted Pro Forma Effect of the Acquisitions on the Results of Operations [Line Items] |  |
Revenues | $ 56,451 | $ 50,372
Net income | $ 10,002 | $ 9,508
Basic | $ 2.90 | $ 2.83
Diluted | $ 2.77 | $ 2.65

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