Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Comprehensive Income (Loss) (Unaudited)

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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Net (loss) income $ (2,394,057) $ (5,187,531) $ (9,132,019) $ 80,393,494
Unrealized gain (loss) on available-for-sale securities 508 (1,028) 332 (1,028)
Comprehensive (loss) income $ (2,393,549) $ (5,188,559) $ (9,131,687) $ 80,392,466