Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	$ 961,000	$ 887,988
Asset derivatives, Fair value	27,200	24,929
Liability derivatives, Fair value	27,531	25,307
Interest rate swap contracts
Derivative Financial Instruments
Asset derivatives, Fair value	27,021	24,838
Interest rate swap contracts \| Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	950,362	881,600
Asset derivatives, Fair value	27,021	24,838
Liability derivatives, Fair value	27,531	25,307
Loan commitments \| Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	4,388	2,638
Asset derivatives, Fair value	143	67
Liability derivatives, Fair value	0	0
Forward contracts - mortgage loan \| Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	6,250	3,750
Asset derivatives, Fair value	36	24
Liability derivatives, Fair value	$ 0	$ 0

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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