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Summary of Significant Accounting Policies (Details Textual) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		6 Months Ended					6 Months Ended
	Jun. 30, 2012 NumberOfCustomers	Jun. 30, 2011	Jun. 30, 2012 NumberOfCustomers	Jun. 30, 2011	Dec. 31, 2011 NumberOfCustomers	Aug. 31, 2009 2009 Unit Offering [Member] Warrant [Member]	Nov. 30, 2010 2010 Unit Offering [Member] Warrant [Member]	Jun. 30, 2012 Maximum [Member]	Jun. 30, 2012 Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Cost of product revenue		$ 100,000		$ 200,000
Deferred revenue	100,000		100,000		100,000
Number of major customers representing cumulative outstanding trade receivables	2		2		2
Cumulative outstanding trade receivables percentage by major customers	60.00%		60.00%		58.00%				10.00%
Inventory valuation reserves	100,000		100,000		600,000
Estimated useful life of property and equipment, net								5 years	3 years
Estimated useful life of intangible assets			10 years
Recognized impairment charges related to its long-lived assets	0	0	0	0
Foreign currency gains (losses)	(748,000)	(258,000)	(418,000)	435,000
Warrants to purchase an aggregate shares of common stock						2.4	3.7
Derecognition of tax positions, Maximum								50.00%
Company's tax years subject to examination by the taxing jurisdictions								2011	2007
Accrued potential future warranty costs	0		0		0
Unrecognized tax benefits	$ 0		$ 0		$ 0

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