Inventories (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Inventory Disclosure [Abstract]
Finished goods and sub-assemblies	$ 42,473	$ 44,391
Work in progress	28,582	25,156
Raw materials	82,599	86,933
Obsolescence reserve	(7,764)	(6,932)
Total	$ 145,890	$ 149,548