Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Maximum [Member] Liquidity Arrangements [Member]	Dec. 31, 2012 Line of Credit [Member]	Mar. 30, 2012 Line of Credit [Member]
Significant Accounting Policies [Line Items]
Line of credit facility, maximum borrowing capacity						$ 5,000,000
Line of credit facility borrowing capacity, qualified billed accounts receivable, percent					85.00%
Line of credit facility borrowing capacity, qualified unbilled accounts receivable, percent					80.00%
Cash liquidity maturity period				3 months
Number of operating segment	1
Transaction gains or (losses)	(10,000)	(100,000)	100,000
Interest income	17,808	16,660	6,955
Restricted cash associated with a letter of credit		100,000	100,000
Accounts receivable, reclassified as prepaid expenses and other current assets		500,000	600,000
Realization of cumulative translation adjustment included in net loss	(1,227,656)
Share-based compensation forfeitures rate	12.00%
Unrecognized share-based compensation expense related to unvested awards	2,300,000
Unrecognized share-based compensation expense related to unvested awards expected to be recognized in the period	2 years 4 months 10 days
Unbilled accounts receivable	4,114,442	3,021,208
Impairment charges			4,635,489
Assets Held-for-sale, consisting of land and buildings			1,000,000
Gain on sale of assets held for sale		781,760
Impairment of Intangible Assets, Finite-lived			800,000
Deferred revenue	1,381,755	514,312
Costs reimbursed by the government as a reduction of research and development expenses	1,100,000	700,000	2,900,000
Therapeutic discovery tax grants, offset against research and development expense			900,000
Anti-dilutive securities excluded from computation of earnings per share	11,900,000	12,000,000	10,700,000
Provision for income taxes	$ 195,497