Property and equipment
 9 Months Ended
Mar. 31, 2012
Property and equipment

D. Property and equipment:

Property and equipment consist of (in thousands):

 

     March 31,     June 30,  
     2012     2011  

Cost:

     

Land

    $  7,494      $ 7,497   

Buildings and improvements

      122,731        119,833   

Laboratory equipment

      31,503        30,315   

Office equipment

      5,754        5,407   
  

 

 

    

 

 

  
     167,482        163,052   

Accumulated depreciation and amortization

      (72,868 )      (67,654 ) 
  

 

 

    

 

 

  
   $  94,614      $  95,398