Goodwill and other Identifiable Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Goodwill [Roll Forward]
Beginning balance	$ 100,183	$ 101,484
Goodwill, Acquired During Period	10,985	0
Foreign currency translation adjustment	(1,720)	(1,301)
Ending balance	$ 109,448	$ 100,183