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
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	$ 118,997
2022	371,026
2021	414,553
2020	305,072
2019	141,816
Prior	603,076
Revolving loans amortized cost	1,472,593
Total net loans and leases	3,427,133		$ 3,512,361
Financing Receivable, Current Period Gross Charge-offs [Abstract]
Total	24	$ 9
Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	3,398,905		3,482,530
Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	20,957		22,252
Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	7,271		7,579
Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	0		0
Real Estate [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	72,459
2022	319,005
2021	363,491
2020	287,273
2019	99,859
Prior	567,163
Revolving loans amortized cost	843,365
Total net loans and leases	2,552,615		2,601,543
Real Estate [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	2,529,900		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	15,833		16,426
Real Estate [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
Total net loans and leases	6,882		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
Commercial [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	51,123
2022	176,639
2021	227,251
2020	149,007
2019	69,798
Prior	304,204
Revolving loans amortized cost	326,417
Total net loans and leases	1,304,439		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	51,123
2022	176,639
2021	227,251
2020	149,007
2019	69,798
Prior	301,459
Revolving loans amortized cost	325,817
Total net loans and leases	1,301,094		1,314,377
Commercial [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	2,358
Revolving loans amortized cost	600
Total net loans and leases	2,958		5,535
Commercial [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	387
Revolving loans amortized cost	0
Total net loans and leases	387		402
Commercial [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Agricultural [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	14,274
2022	75,313
2021	41,782
2020	53,027
2019	14,264
Prior	182,770
Revolving loans amortized cost	325,982
Total net loans and leases	707,412		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	14,274
2022	75,313
2021	41,782
2020	53,027
2019	14,264
Prior	176,639
Revolving loans amortized cost	313,107
Total net loans and leases	688,406		709,927
Agricultural [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	12,875
Total net loans and leases	12,875		10,891
Agricultural [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	6,131
Revolving loans amortized cost	0
Total net loans and leases	6,131		6,120
Agricultural [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Residential and Home Equity [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	7,062
2022	65,050
2021	94,458
2020	85,239
2019	14,222
Prior	80,189
Revolving loans amortized cost	41,150
Total net loans and leases	387,370		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	14	0
Residential and Home Equity [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	7,062
2022	65,050
2021	94,458
2020	85,239
2019	14,222
Prior	79,905
Revolving loans amortized cost	41,070
Total net loans and leases	387,006		387,371
Residential and Home Equity [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Residential and Home Equity [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	284
Revolving loans amortized cost	80
Total net loans and leases	364		382
Residential and Home Equity [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Construction [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	2,003
2021	0
2020	0
2019	1,575
Prior	0
Revolving loans amortized cost	149,816
Total net loans and leases	153,394		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
Construction [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	2,003
2021	0
2020	0
2019	1,575
Prior	0
Revolving loans amortized cost	149,816
Total net loans and leases	153,394		166,370
Construction [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Construction [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		168
Construction [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Commercial and Industrial [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	11,960
2022	30,234
2021	35,373
2020	11,131
2019	7,195
Prior	10,863
Revolving loans amortized cost	365,433
Total net loans and leases	472,189		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 and Industrial [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	11,960
2022	30,234
2021	35,318
2020	11,131
2019	7,195
Prior	10,318
Revolving loans amortized cost	365,192
Total net loans and leases	471,348		478,437
Commercial and Industrial [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	55
2020	0
2019	0
Prior	539
Revolving loans amortized cost	0
Total net loans and leases	594		63
Commercial and Industrial [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	6
Revolving loans amortized cost	241
Total net loans and leases	247		258
Commercial and Industrial [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Agricultural [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	170
2022	5,179
2021	2,755
2020	918
2019	1,145
Prior	2,449
Revolving loans amortized cost	263,169
Total net loans and leases	275,785		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	170
2022	5,179
2021	2,755
2020	918
2019	1,135
Prior	2,448
Revolving loans amortized cost	258,702
Total net loans and leases	271,307		308,830
Agricultural [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	4,467
Total net loans and leases	4,467		5,682
Agricultural [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	10
Prior	1
Revolving loans amortized cost	0
Total net loans and leases	11		13
Agricultural [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Commercial Leases [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	33,959
2022	15,132
2021	12,359
2020	5,537
2019	33,496
Prior	20,679
Revolving loans amortized cost	0
Total net loans and leases	121,162		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
Commercial Leases [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	33,959
2022	15,132
2021	12,359
2020	5,537
2019	33,433
Prior	20,679
Revolving loans amortized cost	0
Total net loans and leases	121,099		111,568
Commercial Leases [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	63
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	63		81
Commercial Leases [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Commercial Leases [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Consumer and Other [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	449
2022	1,476
2021	575
2020	213
2019	121
Prior	1,922
Revolving loans amortized cost	626
Total net loans and leases	5,382		5,886
Financing Receivable, Current Period Gross Charge-offs [Abstract]
2023	8
2022	1
2021	0
2020	0
2019	0
Prior	1
Revolving loans amortized cost	0
Total	10	$ 9
Consumer and Other [Member] | Pass [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	318
2022	1,476
2021	575
2020	213
2019	121
Prior	1,922
Revolving loans amortized cost	626
Total net loans and leases	5,251		5,650
Consumer and Other [Member] | Special Mention [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	0		0
Consumer and Other [Member] | Substandard [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	131
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	131		236
Consumer and Other [Member] | Doubtful [Member]
Outstanding Loan Balances by Credit Quality Indicators and Vintage Year [Abstract]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving loans amortized cost	0
Total net loans and leases	$ 0		$ 0