Loans and Leases, Outstanding Loan and Lease Balances Held-for-Investment by Segment and Class, Credit Quality Indicators, Vintage Year by Class of Financing Receivable and Current Period Gross Charge-Offs by Year of Origination (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	$ 257,252		$ 257,252
2022	378,964		378,964
2021	398,683		398,683
2020	296,420		296,420
2019	109,081		109,081
Prior	567,175		567,175
Revolving loans amortized cost	1,549,628		1,549,628
Total net loans and leases	3,557,203		3,557,203		$ 3,512,361
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			30
2022			3
2021			0
2020			0
2019			0
Prior			14
Revolving loans amortized cost			0
Total	15	$ 68	47	$ 362
Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	257,061		257,061
2022	378,964		378,964
2021	379,203		379,203
2020	295,826		295,826
2019	107,029		107,029
Prior	553,410		553,410
Revolving loans amortized cost	1,533,735		1,533,735
Total net loans and leases	3,505,228		3,505,228		3,482,530
Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	19,480		19,480
2020	594		594
2019	2,045		2,045
Prior	5,976		5,976
Revolving loans amortized cost	11,710		11,710
Total net loans and leases	39,805		39,805		22,252
Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	191		191
2022	0		0
2021	0		0
2020	0		0
2019	7		7
Prior	7,789		7,789
Revolving loans amortized cost	4,183		4,183
Total net loans and leases	12,170		12,170		7,579
Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Real Estate [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	169,128		169,128
2022	312,241		312,241
2021	355,783		355,783
2020	277,051		277,051
2019	97,531		97,531
Prior	524,614		524,614
Revolving loans amortized cost	897,929		897,929
Total net loans and leases	2,634,277		2,634,277		2,601,543
Real Estate [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	2,598,846		2,598,846		2,578,045
Real Estate [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	24,072		24,072		16,426
Real Estate [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	11,359		11,359		7,072
Real Estate [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	0		0		0
Commercial [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	94,553		94,553
2022	171,741		171,741
2021	224,260		224,260
2020	144,704		144,704
2019	68,258		68,258
Prior	272,780		272,780
Revolving loans amortized cost	312,893		312,893
Total net loans and leases	1,289,189		1,289,189		1,320,314
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total			0
Commercial [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	94,553		94,553
2022	171,741		171,741
2021	209,733		209,733
2020	144,704		144,704
2019	68,258		68,258
Prior	270,620		270,620
Revolving loans amortized cost	311,938		311,938
Total net loans and leases	1,271,547		1,271,547		1,314,377
Commercial [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	14,527		14,527
2020	0		0
2019	0		0
Prior	1,797		1,797
Revolving loans amortized cost	955		955
Total net loans and leases	17,279		17,279		5,535
Commercial [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	363		363
Revolving loans amortized cost	0		0
Total net loans and leases	363		363		402
Commercial [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Agricultural [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	40,919		40,919
2022	74,346		74,346
2021	41,434		41,434
2020	51,590		51,590
2019	14,184		14,184
Prior	178,326		178,326
Revolving loans amortized cost	352,554		352,554
Total net loans and leases	753,353		753,353		726,938
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total			0
Agricultural [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	40,919		40,919
2022	74,346		74,346
2021	41,434		41,434
2020	50,996		50,996
2019	12,164		12,164
Prior	168,019		168,019
Revolving loans amortized cost	348,460		348,460
Total net loans and leases	736,338		736,338		709,927
Agricultural [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	594		594
2019	2,020		2,020
Prior	4,179		4,179
Revolving loans amortized cost	0		0
Total net loans and leases	6,793		6,793		10,891
Agricultural [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	6,128		6,128
Revolving loans amortized cost	4,094		4,094
Total net loans and leases	10,222		10,222		6,120
Agricultural [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Residential and Home Equity [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	33,656		33,656
2022	63,154		63,154
2021	90,089		90,089
2020	80,757		80,757
2019	13,514		13,514
Prior	73,508		73,508
Revolving loans amortized cost	44,312		44,312
Total net loans and leases	398,990		398,990		387,753
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			14
Revolving loans amortized cost			0
Total	0	0	14	0
Residential and Home Equity [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	33,656		33,656
2022	63,154		63,154
2021	90,089		90,089
2020	80,757		80,757
2019	13,514		13,514
Prior	72,734		72,734
Revolving loans amortized cost	44,312		44,312
Total net loans and leases	398,216		398,216		387,371
Residential and Home Equity [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Residential and Home Equity [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	774		774
Revolving loans amortized cost	0		0
Total net loans and leases	774		774		382
Residential and Home Equity [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Construction [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	3,000		3,000
2021	0		0
2020	0		0
2019	1,575		1,575
Prior	0		0
Revolving loans amortized cost	188,170		188,170
Total net loans and leases	192,745		192,745		166,538
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total	0	0	0	0
Construction [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	3,000		3,000
2021	0		0
2020	0		0
2019	1,575		1,575
Prior	0		0
Revolving loans amortized cost	188,170		188,170
Total net loans and leases	192,745		192,745		166,370
Construction [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Construction [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		168
Construction [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Commercial & Industrial [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	47,471		47,471
2022	27,835		27,835
2021	28,699		28,699
2020	8,612		8,612
2019	5,357		5,357
Prior	8,240		8,240
Revolving loans amortized cost	363,558		363,558
Total net loans and leases	489,772		489,772		478,758
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total			0
Commercial & Industrial [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	47,471		47,471
2022	27,835		27,835
2021	23,821		23,821
2020	8,612		8,612
2019	5,357		5,357
Prior	7,741		7,741
Revolving loans amortized cost	356,637		356,637
Total net loans and leases	477,474		477,474		478,437
Commercial & Industrial [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	4,878		4,878
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	6,832		6,832
Total net loans and leases	11,710		11,710		63
Commercial & Industrial [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	499		499
Revolving loans amortized cost	89		89
Total net loans and leases	588		588		258
Commercial & Industrial [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Agricultural [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	3,311		3,311
2022	4,770		4,770
2021	2,354		2,354
2020	709		709
2019	1,107		1,107
Prior	2,158		2,158
Revolving loans amortized cost	287,542		287,542
Total net loans and leases	301,951		301,951		314,525
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total			0
Agricultural [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	3,311		3,311
2022	4,770		4,770
2021	2,279		2,279
2020	709		709
2019	1,100		1,100
Prior	2,158		2,158
Revolving loans amortized cost	283,619		283,619
Total net loans and leases	297,946		297,946		308,830
Agricultural [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	75		75
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	3,923		3,923
Total net loans and leases	3,998		3,998		5,682
Agricultural [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	7		7
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	7		7		13
Agricultural [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Commercial Leases [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	35,681		35,681
2022	33,040		33,040
2021	11,381		11,381
2020	9,943		9,943
2019	5,019		5,019
Prior	30,586		30,586
Revolving loans amortized cost	0		0
Total net loans and leases	125,650		125,650		111,649
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total	0	0	0	0
Commercial Leases [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	35,681		35,681
2022	33,040		33,040
2021	11,381		11,381
2020	9,943		9,943
2019	4,994		4,994
Prior	30,586		30,586
Revolving loans amortized cost	0		0
Total net loans and leases	125,625		125,625		111,568
Commercial Leases [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	25		25
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	25		25		81
Commercial Leases [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Commercial Leases [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Consumer and Other [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	1,661		1,661
2022	1,078		1,078
2021	466		466
2020	105		105
2019	67		67
Prior	1,577		1,577
Revolving loans amortized cost	599		599
Total net loans and leases	5,553		5,553		5,886
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			30
2022			3
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total	15	$ 20	33	$ 38
Consumer and Other [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	1,470		1,470
2022	1,078		1,078
2021	466		466
2020	105		105
2019	67		67
Prior	1,552		1,552
Revolving loans amortized cost	599		599
Total net loans and leases	5,337		5,337		5,650
Consumer and Other [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		0
Consumer and Other [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	191		191
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	25		25
Revolving loans amortized cost	0		0
Total net loans and leases	216		216		236
Consumer and Other [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	$ 0		$ 0		$ 0