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Note 7 - Concentrations (Tables)
12 Months Ended
Jun. 30, 2015
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
2015
   
2014
 
AXP
  $ 6,612     $ 6,143  
BioArchive
    4,241       4,776  
Manual Disposables
    1,810       1,706  
Bone Marrow
    2,621       2,542  
Other
    758       820  
    $ 16,042     $ 15,987  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
2015
   
2014
 
United States
  $ 8,428     $ 6,909  
China
    2,500       3,169  
Asia - other
    1,955       1,864  
Europe
    2,147       3,072  
South America
    730       771  
Other
    282       202  
    $ 16,042     $ 15,987  
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
   
June 30, 2015
   
June 30, 2014
 
United States
  $ 1,409     $ 687  
China
    524       620  
Costa Rica
    594       567  
India
    296       251  
All other countries
    114       173  
Total equipment, net
  $ 2,937     $ 2,298