Stockholders' Equity and Employee Stock Option Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	$ (204)	$ 423	$ (47)	$ 1,306
Cost of Revenues [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	(27)	69	(68)	160
Product development [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	36	(384)	135	(166)
Sales and marketing [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	(7)	36	(90)	97
General and administrative [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	(206)	419	(24)	735
Discontinued Operations [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	$ 0	$ 283	$ 0	$ 480