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QUARTERLY FINANCIAL DATA (Unaudited) - Summarized Quarterly Financial Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
QUARTERLY FINANCIAL DATA (Unaudited)                      
Total Income (Loss) $ 4,541,605 $ 7,480,172 $ 41,041,839 $ 41,886,372 $ 26,413,861 $ 10,116,673 $ 98,787,716 $ (25,014,567) $ 94,949,988 $ 110,303,683 $ 14,931,862
Total Expenses 329,071 369,558 468,943 445,977 413,752 554,171 511,025 105,391      
Net Income (Loss) $ 4,212,534 $ 7,110,614 $ 40,572,896 $ 41,440,395 $ 26,000,109 $ 9,562,502 $ 98,276,691 $ (25,119,958) $ 93,336,439 $ 108,719,344 $ 14,434,325
Net Income (Loss) per Share $ 0.71 $ 1.49 $ 4.72 $ 3.66 $ 2.12 $ 0.41 $ 2.54 $ (10.79) $ 10.58 $ (5.72) $ 5.13