Loans, Allowance for Credit Losses - Loans, and Credit Quality - Schedule of Past Due Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Loans	$ 6,839,141	$ 6,626,584
Percent of total loans	100.00%	100.00%
30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	$ 3,459	$ 5,787
Percent past due	0.10%	0.10%
90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	$ 27,735	$ 28,419
Percent past due	0.40%	0.40%
Current
Financing Receivable, Past Due [Line Items]
Loans	$ 6,807,947	$ 6,592,378
Percent of current loans	99.50%	99.50%
Retail & other
Financing Receivable, Past Due [Line Items]
Loans	$ 43,374	$ 55,994
Retail & other \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	358	237
Retail & other \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	99	126
Retail & other \| Current
Financing Receivable, Past Due [Line Items]
Loans	42,917	55,631
Commercial \| Commercial & industrial
Financing Receivable, Past Due [Line Items]
Loans	1,412,621	1,319,763
Commercial \| Commercial & industrial \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	681	693
Commercial \| Commercial & industrial \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	6,317	8,534
Commercial \| Commercial & industrial \| Current
Financing Receivable, Past Due [Line Items]
Loans	1,405,623	1,310,536
Commercial \| Owner-occupied CRE
Financing Receivable, Past Due [Line Items]
Loans	963,278	940,367
Commercial \| Owner-occupied CRE \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	285	177
Commercial \| Owner-occupied CRE \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	7,114	4,547
Commercial \| Owner-occupied CRE \| Current
Financing Receivable, Past Due [Line Items]
Loans	955,879	935,643
Commercial \| Agricultural
Financing Receivable, Past Due [Line Items]
Loans	1,346,924	1,322,038
Commercial \| Agricultural \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	37	0
Commercial \| Agricultural \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	11,619	9,969
Commercial \| Agricultural \| Current
Financing Receivable, Past Due [Line Items]
Loans	1,335,268	1,312,069
Commercial real estate \| CRE investment
Financing Receivable, Past Due [Line Items]
Loans	1,231,423	1,221,826
Commercial real estate \| CRE investment \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate \| CRE investment \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	573	1,688
Commercial real estate \| CRE investment \| Current
Financing Receivable, Past Due [Line Items]
Loans	1,230,850	1,220,138
Commercial real estate \| Construction & land development
Financing Receivable, Past Due [Line Items]
Loans	298,122	239,694
Commercial real estate \| Construction & land development \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	11	67
Commercial real estate \| Construction & land development \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate \| Construction & land development \| Current
Financing Receivable, Past Due [Line Items]
Loans	298,111	239,627
Residential \| Residential first mortgage
Financing Receivable, Past Due [Line Items]
Loans	1,205,841	1,196,158
Residential \| Residential first mortgage \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	1,722	3,989
Residential \| Residential first mortgage \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	1,527	3,370
Residential \| Residential first mortgage \| Current
Financing Receivable, Past Due [Line Items]
Loans	1,202,592	1,188,799
Residential \| Residential junior mortgage
Financing Receivable, Past Due [Line Items]
Loans	249,406	234,634
Residential \| Residential junior mortgage \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	84	333
Residential \| Residential junior mortgage \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	486	185
Residential \| Residential junior mortgage \| Current
Financing Receivable, Past Due [Line Items]
Loans	248,836	234,116
Residential \| Residential construction
Financing Receivable, Past Due [Line Items]
Loans	88,152	96,110
Residential \| Residential construction \| 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	281	291
Residential \| Residential construction \| 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential \| Residential construction \| Current
Financing Receivable, Past Due [Line Items]
Loans	$ 87,871	$ 95,819

Represents the percentage of loans financing receivables that are current to total loans.

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Represents the percentage of loan by past due status.

+ References

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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- Definition

Percentage of financing receivable balance that is past due.

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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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