Stockholders' Equity and Employee Stock Option Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	$ (314)	$ 955	$ 992	$ 2,177
Cost of product [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	68	64	203	171
Cost of service [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	8	2	32	3
Product development [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	130	132	(37)	97
Sales and marketing [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	79	10	174	196
General and administrative [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	225	394	962	806
Discontinued Operations [Member]
Stock-based Compensation Expense
Stock-based Compensation Expense, Total	$ (824)	$ 353	$ (342)	$ 904