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Property and Equipment
3 Months Ended
Mar. 31, 2013
Property Plant And Equipment [Abstract]  
Property And Equipment Disclosure [Text Block]
        
  March 31, September 30, 
  2013 2012 
 Land$ 1,906 $ 1,952 
 Building and leasehold improvements  14,592   14,420 
 Machinery, furniture and equipment  36,095   33,075 
 Computer equipment  8,742   8,276 
 Construction in progress  2,269   1,773 
    63,604   59,496 
 Accumulated depreciation  (26,256)   (23,712) 
  $ 37,348 $ 35,784 
        

Depreciation expense was $1,732 and $1,582 for the three months ended March 31, 2013 and 2012, respectively. Depreciation expense was $3,449 and $3,040 for the six months ended March 31, 2013 and 2012, respectively.