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Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Derivatives Fair Value [Line Items]    
Swap assets $ 16,432 $ 16,579
Accrued Liabilities and Other Liabilities 16,432 16,579
Long [Member] | Interest Rate Swap [Member]    
Derivatives Fair Value [Line Items]    
Interest Rate Swaps With Loan Customers In An Asset Position Notional Amount 6,921 6,980
Fair Value Of Interest Rate Swaps With Loan Customers In An Asset Position 243 269
Short [Member] | Interest Rate Swap [Member]    
Derivatives Fair Value [Line Items]    
Interest Rate Swaps With Loan Customers In A Liability Position Notional Amount 202,288 205,590
Fair Value Of Interest Rate Swaps With Loan Customers In A Liability Position 16,432 16,579
Short [Member] | Financial Institutions [Member]    
Derivatives Fair Value [Line Items]    
Counterparty Positions With Financial Institutions In An Asset Position Notional Amount 209,209 212,570
Fair Value Of Counterparty Positions With Financial Institutions In An Asset Position $ 16,189 $ 16,310