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Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($)
Sale at the Market [Member]
Common Stock [Member]
Sale at the Market [Member]
Additional Paid-in Capital [Member]
Sale at the Market [Member]
Retained Earnings [Member]
Sale at the Market [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2015         8,195,760      
Balance at Dec. 31, 2015         $ 245,873 $ 278,833,156 $ (184,030,436) $ 95,048,593
Net loss attributable to common shareholders         (22,879,140) (22,879,140)
Offering Expenses         (5,000) (5,000)
Share based compensation         140,131 140,131
Balance (in shares) at Jun. 30, 2016         8,195,760      
Balance at Jun. 30, 2016         $ 245,873 278,968,287 (206,909,576) 72,304,584
Balance (in shares) at Dec. 31, 2016         10,876,112      
Balance at Dec. 31, 2016         $ 326,283 283,757,739 (229,977,258) 54,106,764
Net loss attributable to common shareholders         (4,111,296) (4,111,296)
Issuance of shares sold at the market (ATM), net of issuance costs (in shares) 301,780              
Issuance of shares sold at the market (ATM), net of issuance costs $ 9,060 $ 377,691 $ 386,751        
Share based compensation and shares cancelled, net (in shares)         (4,036)      
Share based compensation and shares cancelled, net         $ (121) 74,827 74,706
Balance (in shares) at Jun. 30, 2017         11,173,856      
Balance at Jun. 30, 2017         $ 335,222 $ 284,210,257 $ (234,088,554) $ 50,456,925