Discontinued Operations (Details) $ in Thousands			3 Months Ended			9 Months Ended
	Oct. 22, 2014 USD ($)	Sep. 17, 2014 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Apr. 16, 2015 USD ($)	Dec. 10, 2014 USD ($)	Sep. 30, 2014 USD ($)
Spain And Netherlands
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other income				$ 700
Photovoltaics Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill			$ 0			$ 0				$ 20,384
Other income			0		$ 17	779	$ 17
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
Transaction costs incurred in sale of business						1,600
Asset sale, cash consideration	1,500
Asset sale, promissory note, principal amount	$ 16,000							$ 15,500
Asset sale, promissory note, interest rate, year one	0.050
Asset sale, promissory note, interest rate, year two	0.13
Asset sale, promissory note, accrued interest								$ 200
Net assets sold during the period			13,300			13,300
Gain (loss) on disposal of discontinued operations, net of tax						2,000
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
Net assets sold									$ 60,300
Transaction costs incurred in sale of business		$ 2,700
Gain on sale of Photovoltaics Business			200	$ 56,800		$ 400
Working capital adjustment, payment			$ 100