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STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2024
Jun. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Details {3}            
Net income $ 3,310,838 $ 3,575,818 $ 4,026,145 $ 4,097,587 $ 6,886,656 $ 8,123,732
Unrealized loss from marketable securities, net of tax 83,348 75,362 680,417 28,710 158,710 709,127
Comprehensive income $ 3,394,186 $ 3,651,180 $ 4,706,562 $ 4,126,297 $ 7,045,366 $ 8,832,859