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Basis of Presentation (Changes from Incurred Loss Model to Expected Credit Loss Model) (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on debt securities available for sale		$ 0		$ 0
ACL on loans		17,483	$ 19,445	16,999	$ 17,017	$ 16,660	$ 16,442
ACL	$ 19,794
Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	16,999
Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	2,795
Unfunded Loan Commitment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	329
Unfunded Loan Commitment [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	329
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	1,288	1,264	1,359	2,833	2,740	2,326	2,175
Residential Real Estate Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	2,833
Residential Real Estate Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	(1,545)
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	13,820	11,253	13,725	8,293	9,155	10,287	10,878
Commercial Real Estate Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	8,293
Commercial Real Estate Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	5,527
Agricultural Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	59
Agricultural Real Estate Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	259
Agricultural Real Estate Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	(200)
Construction Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	797	819	703	409	242	134	133
Construction Real Estate Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	409
Construction Real Estate Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	388
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	1,289	1,281	1,158	2,445	2,504	1,495	1,490
Commercial Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	2,445
Commercial Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	(1,156)
Other Agricultural Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	127
Other Agricultural Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	124
Other Agricultural Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	3
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	2,085	$ 2,725	$ 2,297	$ 2,636	$ 2,046	$ 1,622	$ 1,766
Consumer Loans [Member] | Pre Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	2,636
Consumer Loans [Member] | Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL on loans	$ (551)

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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