Discontinued Operations (Income Statements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Photovoltaics Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 12,614
Cost of revenue	0	0	0	8,245
Gross profit	0	0	0	4,369
Operating (income) expense	(34)	(272)	(821)	2,431
Other income	0	0	0	779
Gain on sale of discontinued operations	0	0	0	87,022
Income from discontinued operations before income tax	34	272	821	89,739
Income tax (expense) benefit	(19)	277	(28)	(29,926)
Income from discontinued operations, net of tax	15	549	793	59,813
Digital Products Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	40	0	11,855
Cost of revenue	(445)	(1)	(494)	9,111
Gross profit	445	41	494	2,744
Operating (income) expense	(32)	446	(330)	3,158
Other income	3,804	0	3,804	0
Gain on sale of discontinued operations	0	1,994	0	1,994
Income from discontinued operations before income tax	4,281	1,589	4,628	1,580
Income tax (expense) benefit	(152)	1,870	(156)	1,873
Income from discontinued operations, net of tax	$ 4,129	$ 3,459	$ 4,472	$ 3,453