Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Comprehensive Income (Loss)

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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Net income (loss) $ 74,945,856 $ (14,309,031) $ (27,563,535)
Unrealized loss on available-for-sale securities (2,396)
Comprehensive income (loss) $ 74,943,460 $ (14,309,031) $ (27,563,535)