Loans - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 5,787,622		$ 5,787,622		$ 4,133,267
Current Period Gross Charge-Offs
Total	1,126	$ 619	2,772	$ 2,279
Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	98,354		98,354		118,292
Year two	113,736		113,736		88,748
Year three	74,575		74,575		94,374
Year four	91,408		91,408		68,523
Year five	62,378		62,378		19,250
Prior	62,951		62,951		54,844
Revolving Loans Amortized Cost Basis	226,732		226,732		147,754
Total	730,134		730,134		591,785
Current Period Gross Charge-Offs
Year one			0		0
Year two			306		4
Year three			0		96
Year four			138		64
Year five			0		0
Prior			77		13
Revolving Loans Amortized Cost Basis			236		46
Total	384	92	757	223	223
Commercial and Industrial Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	96,905		96,905		118,037
Year two	111,892		111,892		86,412
Year three	69,327		69,327		93,406
Year four	84,451		84,451		64,298
Year five	57,193		57,193		17,140
Prior	50,489		50,489		49,181
Revolving Loans Amortized Cost Basis	212,548		212,548		143,096
Total	682,805		682,805		571,570
Commercial and Industrial Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,349		1,349		147
Year two	980		980		1,709
Year three	2,136		2,136		787
Year four	1,292		1,292		1,061
Year five	649		649		1,202
Prior	2,582		2,582		2,044
Revolving Loans Amortized Cost Basis	7,258		7,258		1,023
Total	16,246		16,246		7,973
Commercial and Industrial Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	100		100		108
Year two	864		864		627
Year three	3,112		3,112		181
Year four	5,665		5,665		3,164
Year five	4,536		4,536		908
Prior	9,880		9,880		3,619
Revolving Loans Amortized Cost Basis	6,926		6,926		3,635
Total	31,083		31,083		12,242
Commercial and Industrial Loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	307,437		307,437		327,921
Year two	431,025		431,025		329,595
Year three	413,246		413,246		412,441
Year four	543,301		543,301		405,248
Year five	474,092		474,092		189,824
Prior	873,335		873,335		520,372
Revolving Loans Amortized Cost Basis	60,745		60,745		39,471
Total	3,103,181		3,103,181		2,224,872
Current Period Gross Charge-Offs
Year one			0		0
Year two			0		0
Year three			0		0
Year four			0		0
Year five			0		0
Prior			26		308
Revolving Loans Amortized Cost Basis			0		0
Total	0	0	26	308	308
Commercial Real Estate Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	306,962		306,962		327,488
Year two	428,190		428,190		315,981
Year three	395,842		395,842		410,135
Year four	534,455		534,455		394,698
Year five	451,968		451,968		187,849
Prior	804,623		804,623		502,263
Revolving Loans Amortized Cost Basis	60,613		60,613		39,271
Total	2,982,653		2,982,653		2,177,685
Commercial Real Estate Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	401		401		433
Year two	2,835		2,835		13,433
Year three	16,711		16,711		1,740
Year four	5,681		5,681		5,395
Year five	15,304		15,304		1,975
Prior	39,417		39,417		12,349
Revolving Loans Amortized Cost Basis	0		0		200
Total	80,349		80,349		35,525
Commercial Real Estate Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	74		74		0
Year two	0		0		181
Year three	693		693		566
Year four	3,165		3,165		5,155
Year five	6,820		6,820		0
Prior	29,295		29,295		5,760
Revolving Loans Amortized Cost Basis	132		132		0
Total	40,179		40,179		11,662
Commercial Real Estate Loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	42,901		42,901		47,901
Year two	40,442		40,442		36,805
Year three	37,806		37,806		48,251
Year four	49,630		49,630		34,488
Year five	33,385		33,385		40,801
Prior	149,586		149,586		118,475
Revolving Loans Amortized Cost Basis	119,057		119,057		104,316
Total	472,807		472,807		431,037
Current Period Gross Charge-Offs
Year one			0		0
Year two			0		0
Year three			0		0
Year four			0		0
Year five			0		0
Prior			0		8
Revolving Loans Amortized Cost Basis			0		0
Total	0	7	0	8	8
Agricultural Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	39,779		39,779		47,179
Year two	37,640		37,640		35,379
Year three	34,027		34,027		48,105
Year four	47,469		47,469		33,666
Year five	30,116		30,116		35,726
Prior	132,789		132,789		103,702
Revolving Loans Amortized Cost Basis	106,705		106,705		102,251
Total	428,525		428,525		406,008
Agricultural Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	3,122		3,122		547
Year two	2,433		2,433		1,426
Year three	2,936		2,936		146
Year four	2,097		2,097		822
Year five	3,169		3,169		5,075
Prior	11,800		11,800		10,676
Revolving Loans Amortized Cost Basis	11,300		11,300		2,065
Total	36,857		36,857		20,757
Agricultural Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		175
Year two	369		369		0
Year three	843		843		0
Year four	64		64		0
Year five	100		100		0
Prior	4,997		4,997		4,097
Revolving Loans Amortized Cost Basis	1,052		1,052		0
Total	7,425		7,425		4,272
Agricultural Loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	24,923		24,923		32,214
Year two	26,462		26,462		26,392
Year three	21,492		21,492		8,272
Year four	5,132		5,132		6,578
Year five	3,029		3,029		2,128
Prior	4,050		4,050		3,669
Revolving Loans Amortized Cost Basis	0		0		0
Total	85,088		85,088		79,253
Current Period Gross Charge-Offs
Year one			0		0
Year two			0		0
Year three			0		0
Year four			0		0
Year five			0		0
Prior			0		0
Revolving Loans Amortized Cost Basis			0		0
Total	0	$ 0	0	$ 0	0
Leases | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	24,923		24,923		32,214
Year two	26,462		26,462		26,392
Year three	21,492		21,492		8,272
Year four	5,132		5,132		6,578
Year five	3,029		3,029		2,128
Prior	4,050		4,050		3,669
Revolving Loans Amortized Cost Basis	0		0		0
Total	85,088		85,088		79,253
Leases | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Leases | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Leases | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	$ 0		$ 0		$ 0