XML 59 R49.htm IDEA: XBRL DOCUMENT v3.23.3
Debt Securities - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]    
Purchase of available-for sale debt securities $ 962,000 $ 254,000
Proceeds from maturities of available-for-sale debt securities 1,048,000 1,015,000
Proceeds from sale of available-for-sale debt securities $ 0 $ 0