Income and other Taxes (Narrative) (Details) - USD ($)	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income tax expense	$ 333,000	$ (120,000)
Income tax (expense) benefit, discontinued operations	$ 0
Effective tax rate	(80.20%)	(6.40%)
Income tax penalties and interest accrued	$ 400,000		$ 300,000