Income and other Taxes Narrative (Details) (USD $)	3 Months Ended			6 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Discontinued operation, deferred income tax expense benefit		$ 24,100,000
Income tax benefit (expense)	(396,000)		433,000	(2,308,000)	(647,000)
Discontinued operations, tax effect	(2,100,000)		400,000	28,100,000	600,000
Effective income tax rate reconciliation, percent	29.30%		(10.10%)	36.10%	7.00%
Unrecognized tax benefits, income tax penalties and interest accrued	476,000			476,000		445,000
Income tax credits and adjustments					$ 600,000