Restructuring and Separation Costs (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost And Reserve [Line Items]
Restructuring and separation costs	$ 3,797
Stock-based compensation expense	2,343	$ 1,116
Restructuring and separation costs future cash payments	2,000
Restructuring and separation costs payable by fiscal 2016	$ 1,700
Restricted Stock Units (RSUs)
Restructuring Cost And Reserve [Line Items]
Share-based compensation accelerated vesting shares	60,909
Restructuring and Separation Costs
Restructuring Cost And Reserve [Line Items]
Stock-based compensation expense	$ 1,800