Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income Taxes (Textual) [Abstract]
Valuation allowance	$ 0.3
Income Taxes (Additional Textual) [Abstract]
U.S. federal statutory tax rate	35.00%
Income tax expense from discontinued operations	1.1
Income tax benefit from discontinued operations		13.8	4.5
Income tax benefit from the sale of discontinued operations	0.6
Unrecognized tax benefits including interest and penalties	1.4	1.6	1.9
Liability for unrecognized tax benefits to change significantly in the next 12 months	0.8	0.7	0.7
Maximum [Member]
Income Taxes (Textual) [Abstract]
Valuation allowance		$ 0.1

Income tax expense or benefit attributable to Income or Loss from discontinued operations during the phase-out period.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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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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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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