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Loans and ACL (Summary of Loan Composition) (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 1,423,571	$ 1,349,463
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	1.0000	1.0000
Commercial and Industrial, Secured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 221,510	$ 189,186
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1556	0.1402
Commercial and Industrial, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 23,384	$ 20,552
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0164	0.0152
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 244,894	$ 209,738
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1720	0.1554
Commercial Real Estate, Owner Occupied, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 178,376	$ 180,636
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1253	0.1339
Commercial Real Estate, Non-owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 208,118	$ 216,292
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1462	0.1603
Commercial Real Estate, 1-4 Family Investor, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 92,497	$ 89,208
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0650	0.0661
Commercial Real Estate, Multifamily, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 68,456	$ 78,108
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0481	0.0579
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 547,447	$ 564,244
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.3846	0.4182
Commercial Advances to Mortgage Brokers Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 63,080	$ 18,541
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0443	0.0137
Agricultural Mortgage, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 67,550	$ 69,044
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0475	0.0512
Agricultural Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 32,144	$ 30,950
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0226	0.0229
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 99,694	$ 99,994
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0701	0.0741
Residential Real Estate, Senior Lien, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 332,743	$ 313,459
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2337	0.2323
Residential Real Estate, Junior Lien, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 8,655	$ 5,945
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0061	0.0044
Residential Real Estate, Home Equity Lines of Credit, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 39,474	$ 37,014
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0277	0.0274
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 380,872	$ 356,418
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2675	0.2641
Consumer, Secured, Direct, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 35,050	$ 37,948
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0246	0.0281
Consumer, Secured, Indirect, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 49,136	$ 59,324
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0345	0.0440
Consumer, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 3,398	$ 3,256
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0024	0.0024
Total consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	$ 87,584	$ 100,528
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0615	0.0745

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
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