CONDENSED CONSOLIDATED INTERIM STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Total	Share capital	Contributed surplus	Accumulated other comprehensive income/(loss)	Deficit
Balance at Dec. 31, 2012	$ 60,540,075	$ 236,401,096	$ 28,589,591	$ 4,101,968	$ (208,552,580)
Balance (in shares) at Dec. 31, 2012		98,068,638
Increase (Decrease) in Stockholders' Equity
Stock based compensation	1,578,028		1,578,028
Unrealized loss on available-for-sale securities	(50,577)			(50,577)
Exchange difference on translating foreign operations	(504,149)			(504,149)
Net loss	(4,063,282)				(4,063,282)
Balance at Mar. 31, 2013	57,500,095	236,401,096	30,167,619	3,547,242	(212,615,862)
Balance (in shares) at Mar. 31, 2013		98,068,638
Increase (Decrease) in Stockholders' Equity
Stock based compensation	1,986,245		1,986,245
Unrealized loss on available-for-sale securities	(68,340)			(68,340)
Impairment of available-for-sale-securities	298,769			298,769
Exchange difference on translating foreign operations	(756,390)			(756,390)
Net loss	(5,789,198)				(5,789,198)
Balance at Dec. 31, 2013	53,171,181	236,401,096	32,153,864	3,021,281	(218,405,060)
Balance (in shares) at Dec. 31, 2013	98,068,638	98,068,638
Increase (Decrease) in Stockholders' Equity
Stock based compensation	618,582		618,582
Exchange difference on translating foreign operations	(450,529)			(450,529)
Net loss	(3,510,319)				(3,510,319)
Balance at Mar. 31, 2014	$ 49,828,915	$ 236,401,096	$ 32,772,446	$ 2,570,752	$ (221,915,379)
Balance (in shares) at Mar. 31, 2014	98,068,638	98,068,638