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Note 10 - Stockholders' Equity (Tables)
3 Months Ended
Aug. 31, 2014
Stockholders' Equity Note [Abstract]  
Schedule of Stockholders Equity [Table Text Block]
   

August 31, 2014

 

Common Stock Shares

       

Balance at May 25, 2014

    26,815,253  

Stock options exercised, net of shares tendered

    469  

Vested restricted stock units, net of shares tendered

    29,496  

Balance at August 31, 2014

    26,845,218  
         

Common Stock

       

Balance at May 25, 2014

  $ 27  

Stock options exercised, net of shares tendered

     

Vested restricted stock units, net of shares tendered

     

Balance at August 31, 2014

  $ 27  
         

Additional Paid-in Capital

       

Balance at May 25, 2014

  $ 131,488  

Stock options exercised, net of shares tendered

    3  

Vested restricted stock units, net of shares tendered

     

Taxes paid by Company for stock swaps and RSUs

    (12 )

Stock-based compensation expense

    398  

Tax from stock based compensation expense

    (44 )

Balance at August 31, 2014

  $ 131,833  
         

Retained Earnings

       

Balance at May 25, 2014

  $ 71,554  

Net income

    2,353  

Balance at August 31, 2014

  $ 73,907  
         

Non controlling Interest

       

Balance at May 25, 2014

  $ 1,692  

Non controlling interest in net income

    71  

Distributions to non controlling interest

     

Balance at August 31, 2014

  $ 1,763