Note 5 - Stock-based Compensation (Tables)
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12 Months Ended |
Apr. 03, 2016 |
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| Notes Tables |
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| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
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| | Outstanding at Beginning of Period | | $ | 6.83 | | | | 330,000 | | | $ | 5.76 | | | | 185,000 | | |
| | | 8.38 | | | | 110,000 | | | | 7.90 | | | | 165,000 | | |
| | | 6.27 | | | | (135,000 | ) | | | 5.78 | | | | (20,000 | ) | Outstanding at End of Period | | | 7.64 | | | | 305,000 | | | | 6.83 | | | | 330,000 | | Exercisable at End of Period | | | 6.72 | | | | 112,500 | | | | 5.59 | | | | 115,000 | | |
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
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| | | 110,000 | | | | 165,000 | | |
| | | June 12, 2015 | | | | June 18, 2014 | | |
| | | 3.82 | % | | | 4.05 | % | |
| | | 20.00 | % | | | 30.00 | % | |
| | | 1.12 | % | | | 0.95 | % | |
| | | 10.00 | | | | 10.00 | | |
| | | 3.00 | | | | 3.00 | | |
| | | 5.00 | % | | | 5.00 | % | Exercise price (grant-date closing price) per option | | $ | 8.38 | | | $ | 7.90 | | |
| | $ | 0.77 | | | $ | 1.19 | | |
| Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
| | Fiscal Year Ended April 3, 2016 | | Options Granted in Fiscal Year | |
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| | $ | 7 | | | $ | 7 | | | $ | 14 | | |
| | | 54 | | | | 45 | | | | 99 | | |
| | | 17 | | | | 14 | | | | 31 | | | | | | | | | | | | | | | | Total stock option compensation | | $ | 78 | | | $ | 66 | | | $ | 144 | | | | Fiscal Year Ended March 29, 2015 | | Options Granted in Fiscal Year | |
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| | $ | 12 | | | $ | 12 | | | $ | 24 | | |
| | | 24 | | | | 24 | | | | 48 | | |
| | | 39 | | | | 32 | | | | 71 | | | | | | | | | | | | | | | | Total stock option compensation | | $ | 75 | | | $ | 68 | | | $ | 143 | | |
| Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
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| | | $ | 4.81 | | | | 10,000 | | | | 5.19 | | | $ | 4.81 | | | | 10,000 | | | $ | 4.81 | | | $ | 5.42 | | | | 20,000 | | | | 6.19 | | | $ | 5.42 | | | | 20,000 | | | $ | 5.42 | | | $ | 6.14 | | | | 30,000 | | | | 7.20 | | | $ | 6.14 | | | | 30,000 | | | $ | 6.14 | | | $ | 7.90 | | | | 135,000 | | | | 8.21 | | | $ | 7.90 | | | | 52,500 | | | $ | 7.90 | | | $ | 8.38 | | | | 110,000 | | | | 9.19 | | | $ | 8.38 | | | | - | | | | - | | | | | | | | 305,000 | | | | 8.23 | | | $ | 7.64 | | | | 112,500 | | | $ | 6.72 | | |
| Schedule of Share-based Compensation, Nonemployee Director Stock Award Plan, Activity [Table Text Block] |
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| | 28,000 | | | $ | 8.20 | |
| | 28,000 | | | | 7.97 | |
| | 28,000 | | | | 6.67 | |
| | 42,000 | | | | 5.62 | |
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| Schedule of Nonvested Share Activity [Table Text Block] |
| | Fiscal Year Ended April 3, 2016 | | Stock Granted in Fiscal Year | |
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| | $ | 49 | | | $ | - | | | $ | 49 | | |
| | | - | | | | 31 | | | | 31 | | |
| | | 354 | | | | 112 | | | | 466 | | |
| | | 140 | | | | 76 | | | | 216 | | | | | | | | | | | | | | | | Total stock grant compensation | | $ | 543 | | | $ | 219 | | | $ | 762 | | | | Fiscal Year Ended March 29, 2015 | | Stock Granted in Fiscal Year | |
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| | $ | 170 | | | $ | - | | | $ | 170 | | |
| | | - | | | | 26 | | | | 26 | | |
| | | - | | | | 94 | | | | 94 | | |
| | | 354 | | | | 75 | | | | 429 | | | | | | | | | | | | | | | | Total stock grant compensation | | $ | 524 | | | $ | 195 | | | $ | 719 | | |