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Note 4 - Property, Plant and Equipment
12 Months Ended
Mar. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]

Note 4. Property, Plant and Equipment


Property, plant and equipment consist of the following (in thousands):


   

March 31,

 
   

2014

   

2013

 

Land

  $ 873     $ 873  

Buildings

    4,685       4,553  

Manufacturing equipment

    6,054       5,665  

Computer equipment

    1,487       1,129  

Other

    393       384  
      13,492       12,604  

Less accumulated depreciation

    (5,812 )     (5,198 )
    $ 7,680     $ 7,406  

Depreciation expense for the years ended March 31, 2014, 2013 and 2012 was $865,000, $831,000 and $725,000, respectively.