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Note 4 - Marketable Securities (Tables) | 12 Months Ended
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Mar. 30, 2014
Marketable Securities Disclosure [Abstract] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Market Value |
March 30, 2014 |  | $ | 10,947 |  |  | $ | 240 |  |  | $ | - |  |  | $ | 11,187 |
March 31, 2013 |  | $ | 11,768 |  |  | $ | 539 |  |  | $ | - |  |  | $ | 12,307 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
Fair value of Municipal Bonds |  | Total |  |  | Less than 1 Year |  |  | 1 – 5 Years |  |  | 5 – 10 Years |  |  | After 10 Years |
March 30, 2014 |  | $ | 11,187 |  |  | $ | 5,214 |  |  | $ | 4,792 |  |  | $ | 1,181 |  |  | $ | - |
Realized Gain (Loss) on Investments [Table Text Block] |
|  | March 30, 2014 |  |  | March 31, 2013 |  |  | March 25, 2012 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
Proceeds |  | $ | 2,890 |  |  | $ | 2,000 |  |  | $ | 4,050 |
Gross realized gains |  | $ | - |  |  | $ | - |  |  | $ | - |

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