Restructuring and Separation Costs (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2013
Restructuring And Related Activities [Abstract]
Restructuring and separation costs	$ 3,397	$ 3,927
Separation and severance costs	2,600	1,100
Termination cost of Canadian facility lease and write-off of associated leasehold improvements	800
Restructuring and separation costs paid	2,400
Restructuring and separation costs payable by September 2016	$ 200
Costs incurred		$ 2,800