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Inventories - Net Inventories (Detail) (USD $)
Dec. 31, 2013
Sep. 30, 2013
Inventory Net [Abstract]    
Raw materials $ 5,207,000 $ 6,238,000
Work in process 2,318,000 3,307,000
Finished goods 5,979,000 4,054,000
Used equipment 527,000 527,000
Inventories, net $ 14,031,000 $ 14,126,000