CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income (loss)	$ 193,854,173	$ (3,440,705)	$ (9,955,395)
Other comprehensive income (loss):
Unrealized loss on available-for-sale securities	(1,052)	0	0
Foreign currency translation adjustment	0	336	(10,818)
Realization of cumulative translation adjustment included in net loss	0	229,192	0
Comprehensive income (loss)	$ 193,853,121	$ (3,211,177)	$ (9,966,213)