Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 42,366	$ 36,671
Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	100.00%	100.00%
United States
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 29,869	$ 25,134
United States | Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	70.50%	68.50%
Europe
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 8,794	$ 7,246
Europe | Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	20.80%	19.80%
Latin America
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 984	$ 2,039
Latin America | Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	2.30%	5.60%
Asia/Pacific
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 2,719	$ 2,252
Asia/Pacific | Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	6.40%	6.10%
Total International
Schedule of Revenue by Geographic Region [Line Items]
Revenue	$ 12,497	$ 11,537
Total International | Geographic Concentration Risk | Sales
Schedule of Revenue by Geographic Region [Line Items]
Concentration risk percentage	29.50%	31.50%