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Inventories (Details) (USD $)
Mar. 31, 2013
Sep. 30, 2012
Inventories    
Raw materials $ 7,625,000 $ 7,375,000
Work in process 1,168,000 1,201,000
Finished goods 4,588,000 3,202,000
Used equipment 134,000 140,000
Total Inventory $ 13,515,000 $ 11,918,000