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Goodwill and Other Amortizing Intangible Assets - Estimated Amortization Expense of Core Deposit Intangibles (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Goodwill And Other Intangibles [Line Items]    
2016 $ 2,060  
2017 1,619  
2018 1,181  
2019 744  
2020 327  
Thereafter 254  
Net Intangible Assets 6,185 $ 8,687
Customer list intangible    
Goodwill And Other Intangibles [Line Items]    
2016 128  
2017 97  
2018 69  
2019 42  
2020 15  
Thereafter 11  
Net Intangible Assets 362 521
Customer deposit intangibles    
Goodwill And Other Intangibles [Line Items]    
2016 1,932  
2017 1,522  
2018 1,112  
2019 702  
2020 312  
Thereafter 243  
Net Intangible Assets $ 5,823 $ 8,166