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Outstanding Commitments and Contingent Liabilities - Schedule of contractual amount of exposure to off-balance-sheet risk (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Credit Commitments and Contingencies    
Total commitments $ 2,103,910 $ 2,024,777
Commitments to extend credit    
Credit Commitments and Contingencies    
Total commitments 2,066,438 1,991,769
Standby letters of credit    
Credit Commitments and Contingencies    
Total commitments $ 37,472 $ 33,008