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QUARTERLY FINANCIAL DATA (Unaudited) (Summarized Quarterly Financial Information) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
QUARTERLY FINANCIAL DATA (Unaudited)
Total Income (Loss)	$ (51,306,936)	$ 17,072,810	$ (39,678,429)	$ 333,820	$ 61,200,837	$ 20,645,726	$ 20,511,987	$ 12,500,875	$ (73,578,735)	$ 114,859,425	$ (187,008,870)
Total Expenses	1,122,322	975,773	943,846	996,578	1,166,937	1,074,103	1,177,669	1,403,254	4,038,519	4,821,963	6,435,105
Net Income (Loss)	$ (52,429,258)	$ 16,097,037	$ (40,622,275)	$ (662,758)	$ 60,033,900	$ 19,571,623	$ 19,334,318	$ 11,097,621	$ (77,617,254)	$ 110,037,462	$ (193,443,975)
Net Income (Loss) per Share	$ (3.02)	$ 0.10	$ (3.59)	$ (0.93)	$ (0.51)	$ 1.15	$ 1.17	$ (0.80)

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