Note 9 - Concentrations (Tables)
 12 Months Ended
Jun. 30, 2016
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
2016
    
2015
  
AXP
   $ 6,932     $ 6,612  
BioArchive
     2,465       4,241  
Manual Disposables
     1,507       1,810  
Bone Marrow
     459       2,621  
Other
     566       758  
    $ 11,929     $ 16,042  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
2016
    
2015
  
United States
   $ 5,122     $ 8,428  
China
     2,797       2,500  
Asia - other
     1,955       1,955  
Europe
     1,343       2,147  
Other
     712       1,012  
    $ 11,929     $ 16,042  
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
   
June 30, 2016
    
June 30, 2015
  
United States
   $ 2,030     $ 1,409  
Costa Rica
     367       594  
India
     279       296  
China
     225       524  
All other countries
     61       114  
Total equipment, net
   $ 2,962     $ 2,937