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Note 13 - Stockholders' Equity (Tables) | 9 Months Ended
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Feb. 23, 2014
Stockholders' Equity Note [Abstract] |
Schedule of Stockholders Equity [Table Text Block] |
Common Stock Shares |  |  |  |
Balance at May 26, 2013 |  |  | 26,402,247 |
Stock options exercised, net of shares tendered |  |  | 339,968 |
Vested restricted stock units, net of shares tendered |  |  | 38,058 |
Balance at February 23, 2014 |  |  | 26,780,273 |
Common Stock |  |  |  |
Balance at May 26, 2013 |  | $ | 26 |
Stock options exercised, net of shares tendered |  |  | 1 |
Balance at February 23, 2014 |  | $ | 27 |
Additional Paid-in Capital |  |  |  |
Balance at May 26, 2013 |  | $ | 126,258 |
Stock options exercised, net of shares tendered |  |  | 2,147 |
Taxes incurred by Company for RSUs vested |  |  | (326 | )
Stock-based compensation expense |  |  | 992 |
Tax-benefit from stock based compensation expense |  |  | 1,909 |
Balance at February 23, 2014 |  | $ | 130,980 |
Retained Earnings |  |  |  |
Balance at May 26, 2013 |  | $ | 52,409 |
Net income |  |  | 14,603 |
Balance at February 23, 2014 |  | $ | 67,012 |
Non controlling Interest |  |  |  |
Balance at May 26, 2013 |  | $ | 1,721 |
Non controlling interest in net income |  |  | 123 |
Distributions to non controlling interest |  |  | (226 | )
Balance at February 23, 2014 |  | $ | 1,618 |

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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