Consolidated Statements of Changes in Shareholders' Equity and Comprehensive Income (Loss) (Unaudited) (USD $)	Total	COMMON SHARES	PURCHASE WARRANTS	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Beginning Balance at Dec. 31, 2010	$ 30,537,937	$ 57,017,236	$ 8,275,509	$ (34,541,185)	$ (213,623)
Beginning balance of purchase warrants, Shares at Dec. 31, 2010			3,338,569
Beginning Balance, Shares at Dec. 31, 2010	17,513,608	17,513,608
Net Loss	(7,450,509)			(7,450,509)
Unrealized Gains on Available-for-Sale Investments	41,268				41,268
Comprehensive Loss	(7,409,241)
Issuance of Common Shares	183,641	183,641
Issuance of Common Shares, Shares		55,933
Issuance of Purchase Warrants	64,073		64,073
Issuance of Purchase Warrants, Shares			100,000
Exercise of Purchase Warrants	2,209,677	3,142,574	(932,897)
Exercise of Purchase Warrants, Shares		494,040	(525,829)
Stock Option Based Expense	1,832,153	1,832,153
Restricted Stock Amortization	306,806	306,806
Ending Balance at Jun. 30, 2011	$ 27,725,046	$ 62,482,410	$ 7,406,685	$ (41,991,694)	$ (172,355)
Ending balance of purchase warrants, Shares at Jun. 30, 2011			2,912,740
Ending Balance, Shares at Jun. 30, 2011	18,063,581	18,063,581