Securities - Additional Information (Details) $ in Thousands	Jun. 30, 2024 USD ($) Security	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)
Schedule Of Investments [Line Items]
Trading securities	$ 0		$ 0
Investment securities pledged as collateral	727,600	$ 464,500
Securities available-for-sale and held-to-maturity	$ 4,900	$ 4,500
Minimum
Schedule Of Investments [Line Items]
Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies	10.00%	10.00%
Federal Home Loan Bank Advances
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 0	$ 0
Federal Reserve Bank
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	192,000	0
Public Fund Deposits
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	471,100	390,300
Customer Repurchase Agreements
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 37,600	$ 47,800
Available-for-sale Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	338
Held-to-maturity Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	1