Quarterly report pursuant to Section 13 or 15(d)

Securities - Additional Information (Detail)

v3.23.2
Securities - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]          
Proceeds from sales of securities $ 8,149,000 $ 0 $ 8,149,000 $ 0  
Net gains in earnings resulting from sale of securities (1,871,000)   (1,871,000)    
Net unrealized gains recorded in accumulated other comprehensive income 1,700,000   1,700,000    
Unrealized loss on securities     0    
Available for sale securities pledged as collateral 26,400,000   26,400,000   $ 23,400,000
Unrealized losses on securities $ 1,871,000   $ 1,871,000    
Minimum | U.S. Government and its Agencies          
Debt Securities, Available-for-sale [Line Items]          
Holdings of securities as percentage of share holders' equity 10.00%   10.00%