Note 5 - Stock-based Compensation (Tables)
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3 Months Ended |
Jul. 02, 2017 |
Notes Tables |
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Share-based Compensation, Stock Options, Activity [Table Text Block] |
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| | Outstanding at Beginning of Period
| | $ | 8.35 | | | | 322,500 | | | $ | 7.64 | | | | 305,000 | |
| | | 7.75 | | | | 110,000 | | | | 9.60 | | | | 120,000 | |
| | | - | | | | - | | | | 7.64 | | | | (25,000 | ) |
| | | 9.19 | | | | (15,000 | ) | | | - | | | | - | | Outstanding at End of Period
| | | 8.17 | | | | 417,500 | | | | 8.22 | | | | 400,000 | | Exercisable at End of Period
| | | 8.03 | | | | 252,500 | | | | 7.45 | | | | 225,000 | |
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Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| | Three-Month Periods Ended
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| | | 110,000 | | | | 120,000 | |
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| | | 4.13 | % | | | 3.33 | % |
| | | 25.00 | % | | | 20.00 | % |
| | | 1.47 | % | | | 0.93 | % |
| | | 10.00 | | | | 10.00 | |
| | | 3.00 | | | | 3.00 | |
| | | 5.00 | % | | | 5.00 | % | Exercise price (grant-date closing price) per option
| | $ | 7.75 | | | $ | 9.60 | |
| | $ | 0.85 | | | $ | 0.94 | |
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Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
| | Three-Month Period Ended July 2, 2017
| | | Three-Month Period Ended July 3, 2016
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| | Options Granted in Fiscal Year
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| | $ | - | | | $ | - | | | $ | - | | | $ | 14 | | | $ | 12 | | | $ | 26 | |
| | | 6 | | | | 1 | | | | 7 | | | | 7 | | | | 6 | | | | 13 | |
| | | 10 | | | | 2 | | | | 12 | | | | 2 | | | | 1 | | | | 3 | |
| | | 2 | | | | 1 | | | | 3 | | | | - | | | | - | | | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | Total stock option compensation
| | $ | 18 | | | $ | 4 | | | $ | 22 | | | $ | 23 | | | $ | 19 | | | $ | 42 | |
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Schedule of Share-based Compensation, Nonemployee Director Stock Award Plan, Activity [Table Text Block] |
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| 28,000 | | | | $10.08 | |
| 28,000 | | | | $8.20 | |
| 28,000 | | | | $7.97 | |
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Schedule of Nonvested Share Activity [Table Text Block] |
| | Three-Month Period Ended July 2, 2017
| | | Three-Month Period Ended July 3, 2016
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| | Stock Granted in Fiscal Year
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| | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 28 | | | $ | 28 | |
| | | - | | | | 29 | | | | 29 | | | | 35 | | | | 29 | | | | 64 | |
| | | 27 | | | | 35 | | | | 62 | | | | 27 | | | | - | | | | 27 | |
| | | 29 | | | | - | | | | 29 | | | | - | | | | - | | | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | Total stock grant compensation
| | $ | 56 | | | $ | 64 | | | $ | 120 | | | $ | 62 | | | $ | 57 | | | $ | 119 | |
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Performance Shares [Member] |
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Notes Tables |
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Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
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| | | Compensation expense recognized during fiscal year
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| | | 58,532 | | | | 2016 | | | $ | 7.180 | | | $ | 140,000 | | | $ | 140,000 | | | $ | 140,000 | | | $ | - | | | $ | - | |
| | | 41,205 | | | | 2017 | | | | 7.865 | | | | - | | | | 108,000 | | | | 108,000 | | | | 108,000 | | | | - | |
| | | 42,250 | | | | 2018 | | | | 8.271 | | | | - | | | | - | | | | 116,000 | | | | 116,000 | | | | 116,000 | |
| | | | | | Vesting of shares during the three-month periods ended
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| | | 41,205 | | | | 20,604 | | | $ | 167,000 | | | $ | 56,000 | | | | - | | | $ | - | | | $ | - | |
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