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Interest-Bearing Deposits - Summary of Interest-Bearing Deposits (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Banking And Thrift [Abstract]    
Demand $ 301,674 $ 261,996
Savings and Money markets 588,697 582,128
$250 and over 58,290 42,815
Certificates of Deposit: Other 168,928 173,445
Individual Retirement Accounts 48,622 51,426
Total $ 1,166,211 $ 1,111,810