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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Sep. 30, 2013
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 6,176 $ 5,906
Work-in-process 8,299 7,049
Finished goods 7,987 5,385
Total inventories $ 22,462 $ 18,340