Discontinued Operations (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Total revenue		$ 0	$ 545	$ 0	$ 2,608
Gross margin		0	472	0	2,285
Selling & marketing expenses		0	(53)	0	(706)
General & administrative expenses		0	(258)	0	(679)
Restructuring costs		0	0	0	(522)
Impairment and gain (loss) on sale of discontinued operations		0	35	0	(9,676)
Operating income (loss) from discontinued operations		0	196	0	(9,298)
Income tax benefit on discontinued operations		0	230	0	1,184
Net income (loss) from discontinued operations		$ 0	$ 426	$ 0	$ (8,114)
BookRags [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Gross proceeds from sale of BookRags	$ 5,000