Discontinued Operations (Details) (USD $)	3 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Oct. 22, 2014	Sep. 30, 2014	Dec. 10, 2014
Spain And Netherlands
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other income	$ 700,000
Photovoltaics Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill	0			20,384,000
Other income	779,000	0
Digital Products Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset purchase agreement, selling price			17,500,000
Asset sale, cash consideration			1,500,000
Asset sale, promissory note, principal amount			16,000,000
Asset sale, promissory note, interest rate, year one			0.050
Asset sale, promissory note, interest rate, year two			0.130
Photovoltaics | Photovoltaics Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset purchase agreement, selling price					150,000,000
Net assets sold					60,300,000
Transaction costs incurred in sale of business	2,700,000
Gain on sale of Photovoltaics Business	$ 56,800,000