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Unaudited Condensed Consolidated Statements of Shareholders’ Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2013 $ 137,170 $ 253,549,211 $ (148,984,299) $ 104,702,082
Balance (in Shares) at Dec. 31, 2013 4,572,325      
Net loss     (7,881,596) (7,881,596)
Share-based compensation   286,468   286,468
Issuance of shares from private placement, net of issuance costs $ 33,495 14,266,505   14,400,000
Issuance of shares from private placement, net of issuance costs (in Shares) 1,116,487      
Balance at Jun. 30, 2014 $ 170,665 268,202,184 (156,865,895) 111,506,954
Balance (in Shares) at Jun. 30, 2014 5,688,812      
Balance at Dec. 31, 2014 $ 171,472 268,374,336 (168,343,304) 100,202,504
Balance (in Shares) at Dec. 31, 2014 5,715,731      
Net loss     (9,514,709) (9,514,709)
Share-based compensation $ 2,025 220,044   222,069
Share-based compensation (in Shares) 67,500      
New shares due to rounding, reverse stock- split $ 24 (24)    
New shares due to rounding, reverse stock- split (in Shares) 794      
Balance at Jun. 30, 2015 $ 173,521 $ 268,594,356 $ (177,858,013) $ 90,909,864
Balance (in Shares) at Jun. 30, 2015 5,784,025