Discontinued Operations (Income Statements) (Details) - Discontinued Operations, Disposed of by Sale [Member] - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Photovoltaics Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0
Cost of revenue	0	0
Gross (loss) profit	0	0
Operating expense (income)	3,000	(787,000)
(Loss) income from discontinued operations before income tax expense	(3,000)	787,000
Income tax expense	0	(9,000)
(Loss) income from discontinued operations, net of tax	(3,000)	778,000
Digital Products Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	0
Cost of revenue	1,000	(49,000)
Gross (loss) profit	(1,000)	49,000
Operating expense (income)	5,000	(298,000)
(Loss) income from discontinued operations before income tax expense	(6,000)	347,000
Income tax expense	0	(4,000)
(Loss) income from discontinued operations, net of tax	$ (6,000)	$ 343,000