Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Company's available-for-sale (AFS) securities and other comprehensive income (OCI) (Details)

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Fair Value Measurement - Company's available-for-sale (AFS) securities and other comprehensive income (OCI) (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
OCI from AFS securities - debt securities:    
Unrealized (losses) on securities at beginning of period $ 315,614 $ (561,490)
Reversal of losses from unrealized to realized 212,097  
Unrealized (losses) gain on debt securities (337,382) 91,637
Change in OCI from AFS debt securities (125,285) 91,637
Balance at end of period 190,329 (469,853)
Fair market value of securities $ 41,100,000 $ 38,600,000