Divestiture of Disc Publishing Business (Major Assets and Liabilities of Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current liabilities from discontinued operations	$ 50	$ 448
Disc Publishing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets from discontinued operations	910	1,026
Accrued compensation	0	31
Other current liabilities	50	417
Current liabilities from discontinued operations	$ 50	$ 448