Discontinued Operations Income Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Photovoltaics Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 18,627	$ 12,614	$ 39,546
Cost of revenue	0	13,836	8,245	27,016
Gross profit	0	4,791	4,369	12,530
Operating expense	(272)	1,749	2,431	3,298
Other income	0	0	779	0
Gain on sale of discontinued operations	0	0	87,022	0
Income from discontinued operations before income tax	272	3,042	89,739	9,232
Income tax benefit (expense)	277	(1,154)	(29,926)	(3,501)
Income from discontinued operations, net of tax	549	1,888	59,813	5,731
Digital Products Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	40	10,667	11,855	19,296
Cost of revenue	(1)	11,490	9,111	20,114
Gross profit	41	(823)	2,744	(818)
Operating expense	446	3,362	3,158	6,708
Other income	0	0	0	0
Gain on sale of discontinued operations	1,994	0	1,994	0
Income from discontinued operations before income tax	1,589	(4,185)	1,580	(7,526)
Income tax benefit (expense)	1,870	1,587	1,873	2,854
Income from discontinued operations, net of tax	$ 3,459	$ (2,598)	$ 3,453	$ (4,672)