Discontinued Operations Income Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Photovoltaics Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 18,410	$ 12,614	$ 57,956
Cost of revenue	0	13,164	8,245	40,180
Gross profit	0	5,246	4,369	17,776
Operating (income) expense	(374)	1,806	2,057	5,104
Other income	0	17	779	17
Gain on sale of discontinued operations	(64)	0	86,958	0
Income from discontinued operations before income tax	310	3,457	90,049	12,689
Income tax benefit (expense)	1,105	(1,311)	(28,821)	(4,812)
Income from discontinued operations, net of tax	1,415	2,146	61,228	7,877
Digital Products Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	89	12,576	11,944	31,872
Cost of revenue	27	11,088	9,138	31,202
Gross profit	62	1,488	2,806	670
Operating (income) expense	(11)	3,014	3,147	9,722
Gain on sale of discontinued operations	0	0	1,994	0
Income from discontinued operations before income tax	73	(1,526)	1,653	(9,052)
Income tax benefit (expense)	488	579	2,361	3,433
Income from discontinued operations, net of tax	$ 561	$ (947)	$ 4,014	$ (5,619)