LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Financing Receivable Credit Exposures by Internally Assigned Grades, by Origination Year (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Total loans	$ 2,350,622	$ 2,313,242
Total loans	858	2,673	$ 1,329
Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	33,300	33,444
2024/2023	27,361	22,808
2023/2022	18,039	8,766
2022/2021	6,722	7,720
2021/2020	6,138	2,446
Prior	4,533	4,161
Revolving Loans Amortized Cost Basis	81,393	73,883
Revolving Loans Converted to Term	1,680	1,784
Total loans	179,166	155,012
2025/2024	0	0
2024/2023	49	0
2023/2022	0	59
2022/2021	0	0
2021/2020	0	0
Prior	63	0
Revolving Loans Amortized Cost Basis	379	2,502
Revolving Loans Converted to Term	0	0
Total loans	491	2,561	963
Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	5,677	5,917
2024/2023	4,456	2,362
2023/2022	1,749	1,343
2022/2021	846	3,879
2021/2020	1,602	407
Prior	288	733
Revolving Loans Amortized Cost Basis	15,629	15,010
Revolving Loans Converted to Term	0	11
Total loans	30,247	29,662
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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0	0
State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,504	0
2024/2023	27	1,442
2023/2022	1,291	13,460
2022/2021	12,737	10,522
2021/2020	9,932	5,319
Prior	26,509	23,439
Revolving Loans Amortized Cost Basis	100	0
Revolving Loans Converted to Term	0	0
Total loans	52,100	54,182
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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0	$ 0
Total Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	253,995	175,431
2024/2023	143,457	195,510
2023/2022	183,251	518,665
2022/2021	461,450	258,322
2021/2020	228,444	154,782
Prior	485,967	408,015
Revolving Loans Amortized Cost Basis	161,019	137,404
Revolving Loans Converted to Term	3,857	4,210
Total loans	1,921,440	1,852,339
Commercial Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	127,490	52,207
2024/2023	64,802	86,332
2023/2022	130,807	384,368
2022/2021	360,060	205,586
2021/2020	184,411	116,840
Prior	311,217	243,887
Revolving Loans Amortized Cost Basis	37,756	30,028
Revolving Loans Converted to Term	1,971	2,187
Total loans	1,218,514	1,121,435
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	40	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	40	0
Agricultural Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	55,630	35,837
2024/2023	31,355	25,650
2023/2022	22,086	55,932
2022/2021	50,690	27,382
2021/2020	23,135	29,770
Prior	143,420	135,795
Revolving Loans Amortized Cost Basis	20,926	17,128
Revolving Loans Converted to Term	206	228
Total loans	347,448	327,722
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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	30,394	48,026
2024/2023	15,456	56,916
2023/2022	9,279	54,796
2022/2021	30,395	3,233
2021/2020	3,226	0
Prior	0	0
Revolving Loans Amortized Cost Basis	5,215	1,355
Revolving Loans Converted to Term	0	0
Total loans	93,965	164,326
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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Residential Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	13,909	11,487
2024/2023	13,209	23,870
2023/2022	23,135	88,963
2022/2021	82,296	46,482
2021/2020	42,974	28,000
Prior	113,141	102,933
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	288,664	301,735
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	5
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	5
Home Equity [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	2,917	2,987
2024/2023	2,528	3,456
2023/2022	2,551	2,418
2022/2021	1,727	1,454
2021/2020	1,150	1,608
Prior	7,028	8,019
Revolving Loans Amortized Cost Basis	34,121	29,302
Revolving Loans Converted to Term	286	419
Total loans	52,308	49,663
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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,934	2,076
2024/2023	1,060	887
2023/2022	373	589
2022/2021	354	543
2021/2020	423	323
Prior	3,341	3,516
Revolving Loans Amortized Cost Basis	80,725	101,570
Revolving Loans Converted to Term	0	1
Total loans	88,210	109,505
2025/2024	0	0
2024/2023	0	13
2023/2022	11	27
2022/2021	1	0
2021/2020	0	0
Prior	285	38
Revolving Loans Amortized Cost Basis	30	29
Revolving Loans Converted to Term	0	0
Total loans	327	107
Mortgage, Home Equity, and Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	18,760	16,550
2024/2023	16,797	28,213
2023/2022	26,059	91,970
2022/2021	84,377	48,479
2021/2020	44,547	29,931
Prior	123,510	114,468
Revolving Loans Amortized Cost Basis	114,846	130,872
Revolving Loans Converted to Term	286	420
Total loans	429,182	460,903
Performing [Member] | Residential Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	13,909	11,487
2024/2023	13,209	23,870
2023/2022	23,135	88,581
2022/2021	81,239	45,731
2021/2020	41,842	27,537
Prior	111,948	101,823
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	285,282	299,029
Performing [Member] | Home Equity [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	2,854	2,987
2024/2023	2,528	3,456
2023/2022	2,533	2,418
2022/2021	1,727	1,454
2021/2020	1,150	1,525
Prior	6,918	7,937
Revolving Loans Amortized Cost Basis	34,100	29,302
Revolving Loans Converted to Term	286	419
Total loans	52,096	49,498
Performing [Member] | Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,934	2,076
2024/2023	1,050	880
2023/2022	373	589
2022/2021	354	543
2021/2020	412	317
Prior	2,577	2,520
Revolving Loans Amortized Cost Basis	80,725	101,570
Revolving Loans Converted to Term	0	1
Total loans	87,425	108,496
Performing [Member] | Mortgage, Home Equity, and Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	18,697	16,550
2024/2023	16,787	28,206
2023/2022	26,041	91,588
2022/2021	83,320	47,728
2021/2020	43,404	29,379
Prior	121,443	112,280
Revolving Loans Amortized Cost Basis	114,826	130,872
Revolving Loans Converted to Term	286	420
Total loans	424,804	457,023
Non Performing [Member] | Residential Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	382
2022/2021	1,057	751
2021/2020	1,132	463
Prior	1,193	1,110
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	3,382	2,706
Non Performing [Member] | Home Equity [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	63	0
2024/2023	0	0
2023/2022	18	0
2022/2021	0	0
2021/2020	0	83
Prior	110	82
Revolving Loans Amortized Cost Basis	21	0
Revolving Loans Converted to Term	0	0
Total loans	212	165
Non Performing [Member] | Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	10	7
2023/2022	0	0
2022/2021	0	0
2021/2020	11	6
Prior	764	996
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	785	1,009
Non Performing [Member] | Mortgage, Home Equity, and Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	63	0
2024/2023	10	7
2023/2022	18	382
2022/2021	1,057	751
2021/2020	1,143	552
Prior	2,067	2,188
Revolving Loans Amortized Cost Basis	20	0
Revolving Loans Converted to Term	0	0
Total loans	4,378	3,880
Pass [Member] | Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	33,300	33,211
2024/2023	27,244	22,808
2023/2022	18,039	6,773
2022/2021	4,938	7,542
2021/2020	6,098	2,150
Prior	3,819	3,464
Revolving Loans Amortized Cost Basis	74,628	68,573
Revolving Loans Converted to Term	232	75
Total loans	168,298	144,596
Pass [Member] | Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	5,677	4,576
2024/2023	3,520	2,008
2023/2022	1,440	888
2022/2021	408	3,870
2021/2020	1,602	407
Prior	288	220
Revolving Loans Amortized Cost Basis	14,761	14,812
Revolving Loans Converted to Term	0	0
Total loans	27,696	26,781
Pass [Member] | State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,504	0
2024/2023	27	1,442
2023/2022	1,291	13,460
2022/2021	12,737	10,522
2021/2020	9,932	5,319
Prior	26,509	23,439
Revolving Loans Amortized Cost Basis	100	0
Revolving Loans Converted to Term	0	0
Total loans	52,100	54,182
Pass [Member] | Total Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	252,643	170,134
2024/2023	136,655	190,011
2023/2022	177,059	463,749
2022/2021	420,803	248,935
2021/2020	210,996	152,485
Prior	464,277	377,600
Revolving Loans Amortized Cost Basis	147,971	127,269
Revolving Loans Converted to Term	2,334	1,976
Total loans	1,812,738	1,732,159
Pass [Member] | Commercial Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	127,490	52,122
2024/2023	59,760	84,465
2023/2022	128,989	360,989
2022/2021	329,694	200,869
2021/2020	172,617	114,839
Prior	294,237	223,601
Revolving Loans Amortized Cost Basis	34,709	28,178
Revolving Loans Converted to Term	1,971	1,786
Total loans	1,149,467	1,066,849
Pass [Member] | Agricultural Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	54,278	32,199
2024/2023	30,648	22,372
2023/2022	18,810	46,644
2022/2021	47,254	26,132
2021/2020	20,747	29,770
Prior	139,424	126,876
Revolving Loans Amortized Cost Basis	18,558	14,351
Revolving Loans Converted to Term	131	115
Total loans	329,850	298,459
Pass [Member] | Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	30,394	48,026
2024/2023	15,456	56,916
2023/2022	8,490	34,995
2022/2021	25,772	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	5,215	1,355
Revolving Loans Converted to Term	0	0
Total loans	85,327	141,292
Special Mention [Member] | Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	20
2024/2023	0	0
2023/2022	0	1,798
2022/2021	0	178
2021/2020	0	62
Prior	0	56
Revolving Loans Amortized Cost Basis	2,442	4,888
Revolving Loans Converted to Term	0	32
Total loans	2,442	7,034
Special Mention [Member] | Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	1,341
2024/2023	936	0
2023/2022	15	0
2022/2021	0	0
2021/2020	0	0
Prior	0	400
Revolving Loans Amortized Cost Basis	639	67
Revolving Loans Converted to Term	0	0
Total loans	1,590	1,808
Special Mention [Member] | State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Special Mention [Member] | Total Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	55	4,291
2024/2023	6,018	3,948
2023/2022	4,088	31,793
2022/2021	7,374	5,002
2021/2020	13,444	1,434
Prior	9,101	14,272
Revolving Loans Amortized Cost Basis	5,537	8,877
Revolving Loans Converted to Term	0	32
Total loans	45,617	69,649
Special Mention [Member] | Commercial Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	5,042	810
2023/2022	797	3,495
2022/2021	5,784	1,874
2021/2020	8,770	1,372
Prior	7,208	8,501
Revolving Loans Amortized Cost Basis	733	1,674
Revolving Loans Converted to Term	0	0
Total loans	28,334	17,726
Special Mention [Member] | Agricultural Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	55	2,930
2024/2023	40	3,138
2023/2022	3,276	7,109
2022/2021	1,384	0
2021/2020	1,731	0
Prior	1,893	5,315
Revolving Loans Amortized Cost Basis	1,723	2,248
Revolving Loans Converted to Term	0	0
Total loans	10,102	20,740
Special Mention [Member] | Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	0	19,391
2022/2021	206	2,950
2021/2020	2,943	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	3,149	22,341
Substandard [Member] | Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	213
2024/2023	117	0
2023/2022	0	195
2022/2021	1,784	0
2021/2020	40	234
Prior	714	641
Revolving Loans Amortized Cost Basis	4,257	422
Revolving Loans Converted to Term	1,443	1,661
Total loans	8,355	3,366
Substandard [Member] | Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	0	354
2023/2022	294	455
2022/2021	438	9
2021/2020	0	0
Prior	0	113
Revolving Loans Amortized Cost Basis	229	131
Revolving Loans Converted to Term	0	11
Total loans	961	1,073
Substandard [Member] | State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Substandard [Member] | Total Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,297	1,006
2024/2023	784	1,551
2023/2022	2,104	23,123
2022/2021	33,273	4,385
2021/2020	4,004	863
Prior	12,589	16,143
Revolving Loans Amortized Cost Basis	7,445	1,258
Revolving Loans Converted to Term	1,518	2,186
Total loans	63,014	50,515
Substandard [Member] | Commercial Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	85
2024/2023	0	1,057
2023/2022	1,021	19,884
2022/2021	24,582	2,843
2021/2020	3,024	629
Prior	9,772	11,785
Revolving Loans Amortized Cost Basis	2,314	176
Revolving Loans Converted to Term	0	401
Total loans	40,713	36,860
Substandard [Member] | Agricultural Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	1,297	708
2024/2023	667	140
2023/2022	0	2,179
2022/2021	2,052	1,250
2021/2020	657	0
Prior	2,103	3,604
Revolving Loans Amortized Cost Basis	645	529
Revolving Loans Converted to Term	75	113
Total loans	7,496	8,523
Substandard [Member] | Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
2025/2024	0	0
2024/2023	0	0
2023/2022	789	410
2022/2021	4,417	283
2021/2020	283	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	5,489	693
Doubtful [Member] | Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	66	0
Revolving Loans Converted to Term	5	16
Total loans	71	16
Doubtful [Member] | Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Doubtful [Member] | State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Doubtful [Member] | Total Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	66	0
Revolving Loans Converted to Term	5	16
Total loans	71	16
Doubtful [Member] | Commercial Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Doubtful [Member] | Agricultural Real Estate [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	0	0
Doubtful [Member] | Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [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 Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	$ 0	$ 0