Earnings per Share Level 4 - EPS Reconciliation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations Attributable to Parent	$ 4.7	$ 10.4	$ 6.7	$ 29.6
Undistributed Earnings Allocated to Participating Securities - Continuing Ops	(0.2)	(0.3)	(0.1)	(0.8)
Interest on Convertible Debt, Net of Tax	0	0	0	0.6
Undistributed Earnings Allocated to Participating Securities - Interest on Convertible Debt	0	0	0	0
Income from continuing operations allocated to common stockholders	4.5	10.1	6.6	29.4
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0.2
Undistributed Earnings Allocated to Participating Securities - Disc Ops	0	0	0	0
Income from discontinued operations allocated to common stockholders	0	0	0	0.2
Net Income (Loss) Available to Common Stockholders, Diluted	4.7	10.4	6.7	30.4
Undistributed Earnings Allocated to Participating Securities	(0.2)	(0.3)	(0.1)	(0.8)
Diluted net income allocated to common stockholders	$ 4.5	$ 10.1	$ 6.6	$ 29.6
Weighted Average Number of Shares Outstanding, Basic	18,392,823	17,901,613	18,286,308	17,714,916
Stock Options And Warrants For Diluted Earnings Per Share Calculation	705,844	932,765	870,163	952,813
Convertible Debt Units for Diluted Earnings Per Share Calculation	0	446,318	0	640,932
Weighted Average Number Diluted Shares Outstanding Adjustment	705,844	1,379,083	870,163	1,593,745
Diluted weighted-average shares	19,098,667	19,280,696	19,156,471	19,308,661