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Inventories, Net (Details) (USD $)
Sep. 30, 2012
Sep. 30, 2011
Inventories    
Raw materials $ 7,375,000 $ 8,846,000
Work in process 1,201,000 2,017,000
Finished goods 3,202,000 1,726,000
Used equipment 140,000 289,000
Total Inventory $ 11,918,000 $ 12,878,000