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Inventories (Schedule of Inventory, Current by major category) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Sep. 30, 2013
Inventory Disclosure [Abstract]    
Purchased components $ 18,193 $ 14,039
Work-in-process 27,570 20,960
Finished goods 34,334 33,470
Inventories $ 80,097 $ 68,469 [1]
[1] Derived from audited financial statements.