Common Stock and Stock-Based Awards (Stock Options, by Exercise Price Range) (Details) (USD $)				12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2013 $17.00 to $19.99	Sep. 30, 2013 $20.00 to $22.60
Common Stock Outstanding [Line Items]
Shares Exercisable, End of Year	16,038	22,360	37,385	14,248	1,790
Weighted Average Remaining Contractual Life (in years)				1 year 9 months 18 days	2 years
Weighted Average Exercise Price	$ 17.58	$ 17.53	$ 14.73	$ 17.00	$ 22.17
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit				$ 17.00	$ 20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit				$ 19.99	$ 22.60