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Inventories (Schedule of Inventory, Current by major category) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Sep. 30, 2013
Inventory Disclosure [Abstract]    
Purchased components $ 17,487 $ 14,039
Work-in-process 26,492 20,960
Finished goods 31,904 33,470
Inventories $ 75,883 $ 68,469 [1]
[1] Derived from audited financial statements.