Derivative Financial Instruments - The Components Of Derivative Financial Instruments (Details) $ in Thousands	Sep. 30, 2023 USD ($) transaction	Dec. 31, 2022 USD ($) transaction
Interest Rate Products
Assets
Outstanding Notional	$ 57,868
Estimated Fair Value	$ 59
Liabilities:
Outstanding Notional		$ 52,533
Estimated Fair Value		$ 60
Interest Rate Products | Derivative financial instruments designated as hedging instruments:
Assets
Number of Transactions | transaction	32	32
Outstanding Notional	$ 198,424	$ 201,906
Estimated Fair Value	$ 19,246	$ 15,636
Interest Rate Products | Derivative financial instruments not designated as hedging instruments:
Assets
Number of Transactions | transaction	45	41
Outstanding Notional	$ 397,422	$ 338,770
Estimated Fair Value	$ 30,938	$ 24,615
Liabilities:
Number of Transactions | transaction	45	41
Outstanding Notional	$ 397,422	$ 338,770
Estimated Fair Value	$ 30,319	$ 24,242
Other | Derivative financial instruments not designated as hedging instruments:
Assets
Number of Transactions | transaction	1	1
Outstanding Notional	$ 14,638	$ 14,638
Estimated Fair Value	4	0
Futures
Liabilities:
Outstanding Notional	18,800	21,800
Estimated Fair Value	1,274	225
Forward MBS trades
Assets
Outstanding Notional	74,000	85,000
Estimated Fair Value	$ 568	$ 36