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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, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
QUARTERLY FINANCIAL DATA (Unaudited)                      
Total Income (Loss) $ (560,865) $ 784,562 $ (79,714) $ (315,759) $ (172,933) $ (111,493) $ (614,755) $ 123,909 $ (171,776) $ (775,272) $ 624,970
Total Expenses 27,021 27,598 26,044 22,976 25,075 25,256 31,133 31,893 103,639 113,357 117,783
Expense Waivers (12,793) (14,037) (17,683) (16,022) (16,101) (16,088) (21,137) (20,977) (60,535) (74,303) (59,956)
Net Expenses 14,228 13,561 8,361 6,954 8,974 9,168 9,996 10,916 43,104 39,054 57,827
Net Income (Loss) $ (575,093) $ 771,001 $ (88,075) $ (322,713) $ (181,907) $ (120,661) $ (624,751) $ 112,993 $ (214,880) $ (814,326) $ 567,143
Net Income (Loss) per Share $ (0.83) $ 1.02 $ (0.08) $ (0.80) $ (0.41) $ (0.27) $ (1.39) $ 0.24 $ (0.69) $ (1.83) $ 1.00