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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Components of inventories    
Raw materials and supplies $ 5,957 $ 5,906
Work-in-process 6,232 7,049
Finished goods 6,730 5,385
Total inventories $ 18,919 $ 18,340