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QUARTERLY FINANCIAL DATA - Summarized Quarterly Financial Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
QUARTERLY FINANCIAL DATA                      
Total Income (Loss) $ 8,800,181 $ (21,454,352) $ 9,439,439 $ 42,651,559 $ 4,541,605 $ 7,480,172 $ 41,041,839 $ 41,886,372 $ 39,436,827 $ 94,949,988 $ 110,303,683
Total Expenses 179,847 239,296 322,132 332,996 329,071 369,558 468,943 445,977      
Net Income (Loss) $ 8,620,334 $ (21,693,648) $ 9,117,307 $ 42,318,563 $ 4,212,534 $ 7,110,614 $ 40,572,896 $ 41,440,395 $ 38,362,556 $ 93,336,439 $ 108,719,344
Net Income (Loss) per Share $ 3.00 $ (7.03) $ 2.49 $ 9.18 $ 0.71 $ 1.49 $ 4.72 $ 3.66 $ 7.64 $ 10.58 $ (5.72)