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Note 14 - Business Segment Reporting (Tables)
3 Months Ended
Aug. 25, 2013
Segment Reporting [Abstract]  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   

Three Months Ended

 
   

August 25, 2013

   

August 26, 2012

 

Taiwan

  $ 12.0     $ 12.9  

Canada

  $ 9.4     $ 6.2  

Japan

  $ 3.2     $ 3.1  

Indonesia

  $ 2.5     $ 6.1  

Belgium

  $ 1.2     $ 3.0  

All Other Countries

  $ 6.9     $ 5.0  
Schedule of Segment Reporting Information, by Segment [Table Text Block]

Three Months Ended August 25, 2013

 

Food Products Technology

   

Food Export

   

HA-based Biomaterials

   

Corporate

   

TOTAL

 

Net sales

  $ 79,436     $ 21,398     $ 8,587     $ 58     $ 109,479  

International sales

  $ 9,478     $ 21,389     $ 4,377     $     $ 35,244  

Gross profit

  $ 8,881     $ 1,205     $ 2,388     $ 58     $ 12,532  

Net income (loss)

  $ 7,266     $ 276     $ (376 )   $ (2,414 )   $ 4,752  

Depreciation and amortization

  $ 1,222     $ 1     $ 584     $ 35     $ 1,842  

Dividend Income

  $ 281     $     $     $     $ 281  

Interest income

  $ 4     $     $ 56     $     $ 60  

Interest expense

  $ 376     $     $ 55     $     $ 431  

Income tax expense

  $ 505     $ 78     $ (106 )   $ 1,998     $ 2,475  
                                         

Three Months Ended August 26, 2012

                                       

Net sales

  $ 68,631     $ 25,358     $ 7,973     $ 112     $ 102,074  

International sales

  $ 6,223     $ 25,311     $ 4,802     $     $ 36,336  

Gross profit

  $ 9,942     $ 1,343     $ 2,366     $ 112     $ 13,763  

Net income (loss)

  $ 5,916     $ 309     $ (312 )   $ (1,547 )   $ 4,366  

Depreciation and amortization

  $ 1,236     $ 1     $ 583     $ 36     $ 1,856  

Dividend Income

  $ 281     $     $     $     $ 281  

Interest income

  $ 1     $     $ 25     $     $ 26  

Interest expense

  $ 455     $     $ 86     $     $ 541  

Income tax expense

  $ 1,972     $ 103     $ (104 )   $ 594     $ 2,565