Income and other Taxes Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Deferred income tax assets utilized			$ 24,100
Income tax (expense) benefit	$ (456)	$ 732	1,852	$ 1,379
Discontinued operations, tax benefit (expense)	1,600	$ (700)	(26,500)	$ (1,400)
Alternative minimum tax	$ 600		$ 600
Effective income tax rate reconciliation, percent	49.60%	14.40%	33.80%	9.70%
Accrued interest and penalties	$ 493		$ 493		$ 445
Discontinued operations, income tax credits and adjustments	$ 200		$ 200
Income tax credits and adjustments		$ 200		$ 800