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Note 3 - Stock-based Compensation (Tables) | 9 Months Ended
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Feb. 26, 2017
Notes Tables |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | February 26, 2017 |  |  | February 28, 2016 |  |  | February 26, 2017 |  |  | February 28, 2016 |
Options |  | $ | 308 |  |  | $ | 331 |  |  | $ | 907 |  |  | $ | 1,021 |
RSUs |  |  | 761 |  |  |  | 553 |  |  |  | 1,935 |  |  |  | 1,560 |
Total stock-based compensation |  | $ | 1,069 |  |  | $ | 884 |  |  | $ | 2,842 |  |  | $ | 2,581 |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | February 26, 2017 |  |  | February 28, 2016 |  |  | February 26, 2017 |  |  | February 28, 2016 |
Cost of sales |  | $ | 124 |  |  | $ | 103 |  |  | $ | 361 |  |  | $ | 301 |
Research and development |  |  | 23 |  |  |  | 22 |  |  |  | 69 |  |  |  | 67 |
Selling, general and administrative |  |  | 922 |  |  |  | 759 |  |  |  | 2,412 |  |  |  | 2,213 |
Total stock-based compensation |  | $ | 1,069 |  |  | $ | 884 |  |  | $ | 2,842 |  |  | $ | 2,581 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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