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Condensed Interim Consolidated Statements of Changes in Equity - USD ($)
Total
Share capital [Member]
Additional paid-in capital [Member]
Treasury stock [Member]
Accumulated surplus / (deficit) [Member]
Balance at Dec. 31, 2014 $ 327,200,093 $ 261,000 $ 339,082,131 $ (1,278,546) $ (10,864,492)
Balance (in shares) at Dec. 31, 2014   25,980,600      
Share based compensation 1,436,505 $ 0 1,436,505 0 0
Dividend payments (12,980,285) $ 2,297 (2,292,266) 0 (10,690,316)
Dividend payments (in shares)   229,711      
Profit for the period 31,954,965 $ 0 0 0 31,954,965
Balance at Dec. 31, 2015 347,611,278 $ 263,297 338,226,370 (1,278,546) 10,400,157
Balance (in shares) at Dec. 31, 2015   26,210,311      
Equity offering $ 64,119,332 $ 75,000 64,044,332 0 0
Equity offering (in shares) 7,500,000 7,500,000      
Share based compensation $ 653,019 $ 0 653,019 0 0
Repurchase of common stock (2,993,931) $ 0 0 (2,993,931) 0
Repurchase of common stock (in shares)   (366,347)      
Dividend payments (6,299,392) $ 1,457 1,245,307 0 (7,546,156)
Dividend payments (in shares)   145,722      
Profit for the period 12,235,631 $ 0 0 0 12,235,631
Balance at Jun. 30, 2016 $ 415,325,937 $ 339,754 $ 404,169,028 $ (4,272,477) $ 15,089,632
Balance (in shares) at Jun. 30, 2016   33,489,686