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Consolidated Statements of Comprehensive Income/(Loss) (Unaudited) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Statement of Comprehensive Income [Abstract]        
Net income (loss) available to common stockholders, as reported $ (1,473,295) $ (3,391,822) $ 10,183,299 $ (6,351,017)
Other comprehensive (loss) income:        
Unrealized foreign currency translation (loss) income (277,157) 33,685 (16,490) (19,819)
Comprehensive income (loss) $ (1,750,452) $ (3,358,137) $ 10,166,809 $ (6,370,836)