Quarterly report pursuant to Section 13 or 15(d)

Securities - Additional Information (Detail)

v3.20.1
Securities - Additional Information (Detail)
3 Months Ended
Mar. 31, 2020
USD ($)
Security
Mar. 31, 2019
USD ($)
Investments Debt And Equity Securities [Abstract]    
Number of securities sales transactions | Security 0  
Net gain (loss) in earnings resulting from sale of securities   $ 725,000
Net unrealized gain (losses) recorded in comprehensive income   (206,000)
Available for sale securities pledged as collateral $ 52,700,000 $ 30,000,000.0