Equity-Based Compensation (Stock Compensation Expense, Restricted Stock) (Details) (Restricted Stock [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock compensation expense	$ 244	$ 557
Cost of revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock compensation expense	36	40
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock compensation expense	12	8
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock compensation expense	29	56
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock compensation expense	$ 167	$ 453