Earnings per Share - EPS Reconciliation (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations Attributable to Parent	$ 19.3	$ 12.8	$ 34.6
Undistributed Earnings Allocated to Participating Securities - Continuing Ops	(0.8)	(0.5)	(0.9)
Income from continuing operations allocated to common stockholders	18.5	12.3	33.7
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0.2
Undistributed Earnings Allocated to Participating Securities - Disc Ops	0	0	0
Income from discontinued operations allocated to common stockholders	0	0	0.2
Net Income (Loss) Available to Common Stockholders, Diluted	19.3	12.8	34.8
Undistributed Earnings Allocated to Participating Securities	(0.8)	(0.5)	(0.9)
Diluted net income allocated to common stockholders	$ 18.5	$ 12.3	$ 33.9
Weighted Average Number of Shares Outstanding, Basic	18,443,233	18,282,939	17,618,085
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Stock Options And Warrants For Diluted Earnings Per Share Calculation	625,264	873,960	949,369
Diluted weighted-average shares	19,068,497	19,156,899	18,567,454