CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)	COMMON SHARES	PURCHASE WARRANTS	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	Total
Balance at Dec. 31, 2012	$ 92,866,458	$ 7,178,929	$ (110,007,257)		$ (9,961,870)
Balance (in shares) at Dec. 31, 2012	21,494,696
Balance (purchase warrants in shares) at Dec. 31, 2012		2,233,240
Increase (Decrease) in Shareholders' Equity
Net (Loss)			(48,783,312)		(48,783,312)
Unrealized Gain on Available-for-Sale Investments				$ 32,419	32,419
Issuance of Common Shares	$ 50,431,250				$ 50,431,250
Issuance of Common Shares (in shares)	18,285,132				17,496,721
Shares Issued in Exchange for Services	$ 780,678				$ 780,678
Shares Issued in Exchange for Services (in shares)	200,000				200,000
Exercise of Purchase Warrants	$ 1,593,003	$ (428,021)			$ 1,164,982
Exercise of Purchase Warrants (in shares)	130,833	(130,833)
Expiration of Purchase Warrants	$ 2,937,293	$ (2,937,293)
Expiration of Purchase Warrants (in shares)		(1,119,336)
Purchase Warrants Expense		$ 1,082,196			1,082,196
Stock Option Based Expense	3,887,695				3,887,695
Restricted Stock Amortization	1,961,501				1,961,501
Balance at Dec. 31, 2013	$ 154,457,878	$ 4,895,811	(158,790,569)	32,419	$ 595,539
Balance (in shares) at Dec. 31, 2013	40,110,661				40,110,661
Balance (purchase warrants in shares) at Dec. 31, 2013		983,071			983,071
Increase (Decrease) in Shareholders' Equity
Net (Loss)			(21,327,157)		$ (21,327,157)
Unrealized Gain on Available-for-Sale Investments				(230,088)	(230,088)
Issuance of Common Shares	$ 71,136,487				$ 71,136,487
Issuance of Common Shares (in shares)	9,268,460				7,816,944
Exercise of Purchase Warrants	$ 13,329,138	$ (4,895,811)			$ 8,433,327
Exercise of Purchase Warrants (in shares)	904,886	(983,071)
Stock Option Based Expense	$ 4,597,412				4,597,412
Restricted Stock Amortization	5,497,274				5,497,274
Balance at Dec. 31, 2014	$ 249,018,189		(180,117,726)	(197,669)	$ 68,702,794
Balance (in shares) at Dec. 31, 2014	50,284,007				50,284,007
Balance (purchase warrants in shares) at Dec. 31, 2014					0
Increase (Decrease) in Shareholders' Equity
Net (Loss)			(14,420,450)		$ (14,420,450)
Unrealized Gain on Available-for-Sale Investments				(717,827)	(717,827)
Issuance of Common Shares	$ 4,132,250				4,132,250
Issuance of Common Shares (in shares)	1,644,248
Stock Option Based Expense	$ 5,193,481				5,193,481
Stock Tendered in Satisfaction of Tax Liabilities	$ (4,264,922)				(4,264,922)
Stock Tendered in Satisfaction of Tax Liabilities (in shares)	(426,378)
Restricted Stock Amortization	$ 3,694,496				3,694,496
Balance at Dec. 31, 2015	$ 257,773,494		$ (194,538,176)	$ (915,496)	$ 62,319,822
Balance (in shares) at Dec. 31, 2015	51,501,877				51,501,877
Balance (purchase warrants in shares) at Dec. 31, 2015					0