Goodwill (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Goodwill, Beginning Balance	$ 559,724	$ 561,458
Effects of Currency Translation	(2,747)	(1,734)
Goodwill, Ending Balance	556,977	559,724
Aerospace [Member]
Goodwill, Beginning Balance	455,423	455,107
Effects of Currency Translation	0	316
Goodwill, Ending Balance	455,423	455,423
Energy [Member]
Goodwill, Beginning Balance	104,301	106,351
Effects of Currency Translation	(2,747)	(2,050)
Goodwill, Ending Balance	$ 101,554	$ 104,301