XML 36 R26.htm IDEA: XBRL DOCUMENT v3.22.2.2
Securities - Additional Information (Detail)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
Security
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Security
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Security
Jul. 31, 2022
USD ($)
$ / shares
Investments Debt And Equity Securities [Abstract]            
Fair value of pledged securities $ 112,500,000   $ 112,500,000   $ 103,000,000.0  
Restricted stock investment in FHLB stock 2,900,000   2,900,000   4,100,000  
Federal Home Loan Bank redemption of stock           $ 1,200,000
Federal Home Loan Bank redemption par value per share | $ / shares           $ 100
Federal Reserve Bank stock 471,000   471,000   $ 471,000  
Proceeds from sale of available-for-sale securities $ 0 $ 0 $ 0 $ 0    
Number of securities in an unrealized loss position, Total | Security 203   203   66  
Number of securities in continuous unrealized loss position, 12 months or more | Security     61   11