Condensed Consolidated Statement of Stockholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balances as of beginning of period at Sep. 30, 2013	$ 335.4	$ 0.2	$ (7.8)	$ 224.0	$ 125.4	$ (6.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10.0				10.0
Other comprehensive loss	(3.7)					(3.7)
Exercise of stock options	1.2			1.2
Share-based Compensation	2.2			2.2
Repurchase of stock	(7.2)		(7.2)
Balances as of end of period at Mar. 31, 2014	$ 337.9	$ 0.2	$ (15.0)	$ 227.4	$ 135.4	$ (10.1)