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Property and Equipment
3 Months Ended
Jun. 30, 2013
Property Plant And Equipment [Abstract]  
Property And Equipment Disclosure [Text Block]
        
  June 30, September 30, 
  2013 2012 
 Land$ 1,907 $ 1,952 
 Building and leasehold improvements  14,719   14,420 
 Machinery, furniture and equipment  36,816   33,075 
 Computer equipment  9,138   8,276 
 Construction in progress  3,155   1,773 
    65,735   59,496 
 Accumulated depreciation  (27,963)   (23,712) 
  $ 37,772 $ 35,784 
        

Depreciation expense was $1,753 and $1,549 for the three months ended June 30, 2013 and 2012, respectively. Depreciation expense was $5,202 and $4,589 for the nine months ended June 30, 2013 and 2012, respectively.