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QUARTERLY FINANCIAL DATA (Unaudited) (Quarterly Financial Information Presents The Results Of Operations) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total Income (Loss)	$ 434,163	$ (21,437)	$ 144,125	$ 68,119	$ (645,188)	$ 9,809	$ (536,427)	$ (1,880,112)	$ 624,970	$ (3,051,918)	$ 2,992,190
Total Expenses	28,222	25,180	29,326	35,055	36,482	40,970	33,306	45,520	117,783	156,278	224,858
Expense Waivers	(14,866)	(11,999)	(15,329)	(17,762)	(17,165)	(19,588)	(9,907)	(15,053)	59,956	61,713	102,092
Net expenses	13,356	13,181	13,997	17,293	19,317	21,382	23,399	30,467	57,827	94,565	122,766
Net Income (Loss)	$ 420,807	$ (34,618)	$ 130,128	$ 50,826	$ (664,505)	$ (11,573)	$ (559,826)	$ (1,910,579)	$ 567,143	$ (3,146,483)	$ 2,869,424
Net Income (Loss) per Share	$ 0.81	$ (0.04)	$ 0.20	$ 0.03	$ (0.75)	$ (0.01)	$ (0.63)	$ (1.10)	$ 1.00	$ (2.49)	$ 2.03

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