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Income Taxes (Details) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]
Income Tax Contingency [Line Items]
Deferred tax assets, valuation allowance	$ 4.7
Unrecognized tax benefits that would impact effective tax rate	1.8	1.8
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0.7	$ 0.7
Number of years open for tax examinations			3 years	5 years

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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