Income and other Taxes (Other Disclosures) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income tax penalties and interest accrued	$ 403,000		$ 403,000		$ 354,000
Income tax penalties and interest expense	0	0	0	100,000
Incentive tax credits received	$ 200,000	$ 400,000	$ 800,000	$ 1,800,000