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		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	$ 191,472		$ 191,472
2022	384,547		384,547
2021	409,518		409,518
2020	302,752		302,752
2019	111,345		111,345
Prior	593,305		593,305
Revolving loans amortized cost	1,498,784		1,498,784
Total net loans and leases	3,491,723		3,491,723		$ 3,512,361
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			32
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total	9	$ 285	32	$ 294
Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	191,345		191,345
2022	384,547		384,547
2021	409,470		409,470
2020	302,752		302,752
2019	111,292		111,292
Prior	583,613		583,613
Revolving loans amortized cost	1,485,826		1,485,826
Total net loans and leases	3,468,845		3,468,845		3,482,530
Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0		0
2022	0		0
2021	48		48
2020	0		0
2019	44		44
Prior	2,857		2,857
Revolving loans amortized cost	8,135		8,135
Total net loans and leases	11,084		11,084		22,252
Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	127		127
2022	0		0
2021	0		0
2020	0		0
2019	9		9
Prior	6,835		6,835
Revolving loans amortized cost	4,823		4,823
Total net loans and leases	11,794		11,794		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	127,463		127,463
2022	314,499		314,499
2021	360,399		360,399
2020	281,124		281,124
2019	98,601		98,601
Prior	546,682		546,682
Revolving loans amortized cost	870,313		870,313
Total net loans and leases	2,599,081		2,599,081		2,601,543
Real Estate [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	2,584,757		2,584,757		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	2,940		2,940		16,426
Real Estate [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	11,384		11,384		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	72,459		72,459
2022	172,866		172,866
2021	226,209		226,209
2020	146,307		146,307
2019	69,072		69,072
Prior	288,672		288,672
Revolving loans amortized cost	318,632		318,632
Total net loans and leases	1,294,217		1,294,217		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	72,459		72,459
2022	172,866		172,866
2021	226,209		226,209
2020	146,307		146,307
2019	69,072		69,072
Prior	285,957		285,957
Revolving loans amortized cost	318,032		318,032
Total net loans and leases	1,290,902		1,290,902		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	0		0
2020	0		0
2019	0		0
Prior	2,340		2,340
Revolving loans amortized cost	600		600
Total net loans and leases	2,940		2,940		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	375		375
Revolving loans amortized cost	0		0
Total net loans and leases	375		375		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	35,673		35,673
2022	74,658		74,658
2021	41,588		41,588
2020	51,985		51,985
2019	14,224		14,224
Prior	180,748		180,748
Revolving loans amortized cost	340,331		340,331
Total net loans and leases	739,207		739,207		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	35,673		35,673
2022	74,658		74,658
2021	41,588		41,588
2020	51,985		51,985
2019	14,224		14,224
Prior	174,620		174,620
Revolving loans amortized cost	335,742		335,742
Total net loans and leases	728,490		728,490		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	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	0		0		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	4,589		4,589
Total net loans and leases	10,717		10,717		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	19,331		19,331
2022	63,975		63,975
2021	92,602		92,602
2020	82,832		82,832
2019	13,730		13,730
Prior	77,262		77,262
Revolving loans amortized cost	43,022		43,022
Total net loans and leases	392,754		392,754		387,753
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			14
2022			0
2021			0
2020			0
2019			0
Prior			0
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	19,331		19,331
2022	63,975		63,975
2021	92,602		92,602
2020	82,832		82,832
2019	13,730		13,730
Prior	76,970		76,970
Revolving loans amortized cost	43,022		43,022
Total net loans and leases	392,462		392,462		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	292		292
Revolving loans amortized cost	0		0
Total net loans and leases	292		292		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	168,328		168,328
Total net loans and leases	172,903		172,903		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	168,328		168,328
Total net loans and leases	172,903		172,903		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	33,979		33,979
2022	29,326		29,326
2021	34,030		34,030
2020	10,053		10,053
2019	6,174		6,174
Prior	9,237		9,237
Revolving loans amortized cost	357,109		357,109
Total net loans and leases	479,908		479,908		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	33,979		33,979
2022	29,326		29,326
2021	33,982		33,982
2020	10,053		10,053
2019	6,174		6,174
Prior	8,715		8,715
Revolving loans amortized cost	349,357		349,357
Total net loans and leases	471,586		471,586		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	48		48
2020	0		0
2019	0		0
Prior	517		517
Revolving loans amortized cost	7,518		7,518
Total net loans and leases	8,083		8,083		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	5		5
Revolving loans amortized cost	234		234
Total net loans and leases	239		239		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	395		395
2022	4,976		4,976
2021	2,491		2,491
2020	794		794
2019	1,118		1,118
Prior	2,368		2,368
Revolving loans amortized cost	270,583		270,583
Total net loans and leases	282,725		282,725		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	395		395
2022	4,976		4,976
2021	2,491		2,491
2020	794		794
2019	1,109		1,109
Prior	2,368		2,368
Revolving loans amortized cost	270,566		270,566
Total net loans and leases	282,699		282,699		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	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving loans amortized cost	17		17
Total net loans and leases	17		17		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	9		9
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	9		9		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	28,715		28,715
2022	34,385		34,385
2021	12,082		12,082
2020	10,626		10,626
2019	5,359		5,359
Prior	33,289		33,289
Revolving loans amortized cost	0		0
Total net loans and leases	124,456		124,456		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	28,715		28,715
2022	34,385		34,385
2021	12,082		12,082
2020	10,626		10,626
2019	5,315		5,315
Prior	33,289		33,289
Revolving loans amortized cost	0		0
Total net loans and leases	124,412		124,412		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	44		44
Prior	0		0
Revolving loans amortized cost	0		0
Total net loans and leases	44		44		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	920		920
2022	1,361		1,361
2021	516		516
2020	155		155
2019	93		93
Prior	1,729		1,729
Revolving loans amortized cost	779		779
Total net loans and leases	5,553		5,553		5,886
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023			18
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving loans amortized cost			0
Total	9	$ 9	18	$ 18
Consumer and Other [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	793		793
2022	1,361		1,361
2021	516		516
2020	155		155
2019	93		93
Prior	1,694		1,694
Revolving loans amortized cost	779		779
Total net loans and leases	5,391		5,391		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	127		127
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	35		35
Revolving loans amortized cost	0		0
Total net loans and leases	162		162		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