Loans and Leases - Credit Quality Indicators for Loans and Leases Held-for-Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Loans and Leases [Abstract]
2025/2024	$ 356,281	$ 186,156
2024/2023	145,329	312,394
2023/2022	270,611	342,235
2022/2021	289,727	357,849
2021/2020	337,414	267,105
Prior	681,357	577,824
Revolving loans amortized cost	1,319,072	1,469,488
Revolving loans converted to term	249,154	165,337
Total net loans and leases	3,648,945	3,678,388
2025/2024	37	294
2024/2023	3	206
2023/2022	250	0
2022/2021	1,617	44
2021/2020	87	100
Prior	22	214
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	2,016	858
Commercial [Member]
Loans and Leases [Abstract]
2025/2024	201,711	63,216
2024/2023	38,557	117,550
2023/2022	103,052	165,013
2022/2021	136,222	209,222
2021/2020	200,062	134,254
Prior	356,496	292,496
Revolving loans amortized cost	290,112	271,701
Revolving loans converted to term	146,371	99,819
Total net loans and leases	1,472,583	1,353,271
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	380	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	380	0
Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	49,178	24,877
2024/2023	23,735	36,693
2023/2022	35,874	69,209
2022/2021	62,515	38,847
2021/2020	41,110	48,551
Prior	165,067	174,312
Revolving loans amortized cost	279,696	326,451
Revolving loans converted to term	48,493	32,086
Total net loans and leases	705,668	751,026
2025/2024	0	0
2024/2023	0	0
2023/2022	180	0
2022/2021	939	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	1,119	0
Residential and Home Equity [Member]
Loans and Leases [Abstract]
2025/2024	35,670	33,036
2024/2023	29,212	37,378
2023/2022	31,874	57,760
2022/2021	50,922	82,936
2021/2020	76,178	72,304
Prior	128,404	73,048
Revolving loans amortized cost	52,468	47,872
Revolving loans converted to term	352	65
Total net loans and leases	405,080	404,399
2025/2024	0	0
2024/2023	0	29
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	0	29
Construction [Member]
Loans and Leases [Abstract]
2025/2024	0	5,774
2024/2023	0	0
2023/2022	0	1,000
2022/2021	0	0
2021/2020	0	0
Prior	1,375	1,375
Revolving loans amortized cost	112,904	186,754
Revolving loans converted to term	13,900	0
Total net loans and leases	128,179	194,903
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	0	0
Real Estate [Member]
Loans and Leases [Abstract]
2025/2024	286,559	126,903
2024/2023	91,504	191,621
2023/2022	170,800	292,982
2022/2021	249,659	331,005
2021/2020	317,350	255,109
Prior	651,342	541,231
Revolving loans amortized cost	735,180	832,778
Revolving loans converted to term	209,116	131,970
Total net loans and leases	2,711,510	2,703,599
Total	1,499	29
Commercial & Industrial [Member]
Loans and Leases [Abstract]
2025/2024	39,666	23,235
2024/2023	21,289	41,802
2023/2022	29,692	20,132
2022/2021	16,284	16,751
2021/2020	13,167	3,525
Prior	5,310	6,573
Revolving loans amortized cost	337,575	365,386
Revolving loans converted to term	34,717	26,999
Total net loans and leases	497,700	504,403
2025/2024	0	231
2024/2023	0	176
2023/2022	70	0
2022/2021	98	44
2021/2020	53	100
Prior	12	185
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	233	736
Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	3,104	2,831
2024/2023	2,857	2,820
2023/2022	2,312	2,625
2022/2021	1,801	1,708
2021/2020	1,020	393
Prior	2,264	2,471
Revolving loans amortized cost	245,438	270,631
Revolving loans converted to term	5,321	6,368
Total net loans and leases	264,117	289,847
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	200	0
2021/2020	34	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	234	0
Commercial Leases [Member]
Loans and Leases [Abstract]
2025/2024	25,516	31,977
2024/2023	29,201	74,956
2023/2022	67,198	25,961
2022/2021	21,749	8,314
2021/2020	5,854	8,065
Prior	21,429	26,182
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	170,947	175,455
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	0	0
Consumer and Other [Member]
Loans and Leases [Abstract]
2025/2024	1,436	1,210
2024/2023	478	1,195
2023/2022	609	535
2022/2021	234	71
2021/2020	23	13
Prior	1,012	1,367
Revolving loans amortized cost	879	693
Revolving loans converted to term	0	0
Total net loans and leases	4,671	5,084
2025/2024	37	63
2024/2023	3	1
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	10	29
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total	50	93
Pass [Member]
Loans and Leases [Abstract]
2025/2024	352,713	185,995
2024/2023	145,329	310,007
2023/2022	270,611	336,887
2022/2021	288,908	357,813
2021/2020	330,166	265,006
Prior	678,227	571,556
Revolving loans amortized cost	1,313,860	1,449,550
Revolving loans converted to term	244,849	162,564
Total net loans and leases	3,624,663	3,639,378
Pass [Member] | Commercial [Member]
Loans and Leases [Abstract]
2025/2024	201,486	63,216
2024/2023	38,557	117,550
2023/2022	103,052	163,875
2022/2021	135,472	209,222
2021/2020	192,814	134,254
Prior	356,496	292,326
Revolving loans amortized cost	290,112	270,231
Revolving loans converted to term	146,371	99,819
Total net loans and leases	1,464,360	1,350,493
Pass [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	46,027	24,877
2024/2023	23,735	36,693
2023/2022	35,874	69,209
2022/2021	62,515	38,847
2021/2020	41,110	46,452
Prior	161,982	169,301
Revolving loans amortized cost	274,736	309,661
Revolving loans converted to term	48,493	32,086
Total net loans and leases	694,472	727,126
Pass [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
2025/2024	35,670	33,036
2024/2023	29,212	37,378
2023/2022	31,874	57,760
2022/2021	50,922	82,936
2021/2020	76,178	72,304
Prior	128,370	72,360
Revolving loans amortized cost	52,266	47,669
Revolving loans converted to term	352	65
Total net loans and leases	404,844	403,508
Pass [Member] | Construction [Member]
Loans and Leases [Abstract]
2025/2024	0	5,774
2024/2023	0	0
2023/2022	0	1,000
2022/2021	0	0
2021/2020	0	0
Prior	1,375	1,375
Revolving loans amortized cost	112,904	186,754
Revolving loans converted to term	13,900	0
Total net loans and leases	128,179	194,903
Pass [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
2025/2024	39,666	23,235
2024/2023	21,289	39,415
2023/2022	29,692	20,065
2022/2021	16,244	16,715
2021/2020	13,167	3,525
Prior	5,310	6,192
Revolving loans amortized cost	337,525	363,947
Revolving loans converted to term	30,455	24,269
Total net loans and leases	493,348	497,363
Pass [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	3,104	2,831
2024/2023	2,857	2,820
2023/2022	2,312	2,584
2022/2021	1,772	1,708
2021/2020	1,020	393
Prior	2,264	2,471
Revolving loans amortized cost	245,438	270,595
Revolving loans converted to term	5,278	6,325
Total net loans and leases	264,045	289,727
Pass [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
2025/2024	25,516	31,977
2024/2023	29,201	74,956
2023/2022	67,198	21,859
2022/2021	21,749	8,314
2021/2020	5,854	8,065
Prior	21,429	26,182
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	170,947	171,353
Pass [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
2025/2024	1,244	1,049
2024/2023	478	1,195
2023/2022	609	535
2022/2021	234	71
2021/2020	23	13
Prior	1,001	1,349
Revolving loans amortized cost	879	693
Revolving loans converted to term	0	0
Total net loans and leases	4,468	4,905
Special Mention [Member]
Loans and Leases [Abstract]
2025/2024	3,376	0
2024/2023	0	2,280
2023/2022	0	5,348
2022/2021	69	3
2021/2020	7,248	2,099
Prior	3,119	5,647
Revolving loans amortized cost	5,010	19,277
Revolving loans converted to term	4,305	2,543
Total net loans and leases	23,127	37,197
Special Mention [Member] | Commercial [Member]
Loans and Leases [Abstract]
2025/2024	225	0
2024/2023	0	0
2023/2022	0	1,138
2022/2021	0	0
2021/2020	7,248	0
Prior	0	170
Revolving loans amortized cost	0	1,470
Revolving loans converted to term	0	0
Total net loans and leases	7,473	2,778
Special Mention [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	3,151	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	2,099
Prior	3,085	5,011
Revolving loans amortized cost	4,960	16,790
Revolving loans converted to term	0	0
Total net loans and leases	11,196	23,900
Special Mention [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	34	85
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	34	85
Special Mention [Member] | Construction [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	0
Special Mention [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	2,280
2023/2022	0	67
2022/2021	40	3
2021/2020	0	0
Prior	0	381
Revolving loans amortized cost	50	1,017
Revolving loans converted to term	4,262	2,500
Total net loans and leases	4,352	6,248
Special Mention [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	41
2022/2021	29	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	43	43
Total net loans and leases	72	84
Special Mention [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	4,102
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	4,102
Special Mention [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	0
Substandard [Member]
Loans and Leases [Abstract]
2025/2024	192	161
2024/2023	0	107
2023/2022	0	0
2022/2021	750	33
2021/2020	0	0
Prior	11	621
Revolving loans amortized cost	202	661
Revolving loans converted to term	0	230
Total net loans and leases	1,155	1,813
Substandard [Member] | Commercial [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	750	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	750	0
Substandard [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	0
Substandard [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	603
Revolving loans amortized cost	202	203
Revolving loans converted to term	0	0
Total net loans and leases	202	806
Substandard [Member] | Construction [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	0
Substandard [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	107
2023/2022	0	0
2022/2021	0	33
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	422
Revolving loans converted to term	0	230
Total net loans and leases	0	792
Substandard [Member] | Agricultural [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	36
Revolving loans converted to term	0	0
Total net loans and leases	0	36
Substandard [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	0	0
Substandard [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
2025/2024	192	161
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	11	18
Revolving loans amortized cost	0	0
Revolving loans converted to term	0	0
Total net loans and leases	$ 203	$ 179