Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of Significant Accounting Policies [Abstract]
Trade receivable	$ 404,000	$ 353,000
Grants receivable	353,000	630,000
Allowance for doubtful accounts	116,816	100,000
Property, Plant and Equipment [Line Items]
Foreign currency gain (loss) included in comprehensive loss	63,179	(1,020,087)	897,338
Foreign currency transaction gain (loss)	$ 34,233	$ 14,829
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from computation of diluted loss per share (in shares)	3,681,301	3,408,905	3,320,590
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from computation of diluted loss per share (in shares)	556,613	636,613	649,000
Treasury Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from computation of diluted loss per share (in shares)	1,800,109	1,286,174
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Equipment useful life	36 months
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Equipment useful life	120 months