Concentrations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 7,510	$ 8,263	$ 22,234	$ 21,153
North And South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,442	5,029	15,053	13,562
Europe, Middle East, And Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,349	1,978	5,180	5,505
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 719	$ 1,256	$ 2,001	$ 2,086
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues, percentage	68.00%	59.00%	65.00%	62.00%
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues, percentage	32.00%	41.00%	35.00%	38.00%
One Customer [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues, percentage			16.00%
Two Customers [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues, percentage	38.00%	20.00%