LOANS (Loans by Credit Quality Indicator) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Year One	$ 2,247,517	$ 3,495,970
Year Two	3,073,040	2,608,239
Year Three	2,172,951	1,048,187
Year Four	802,905	832,545
Year Five	720,479	446,961
Year Six and Prior	1,148,381	1,167,444
Revolving	1,903,372	1,829,006
Total	12,068,645	11,428,352
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	531
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	1,953
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	958
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	1,527
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	981
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	2,272
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	11,392
Charge-offs	19,614	18,296	$ 8,743
Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	2,085,645	3,426,595
Year Two	2,901,425	2,531,820
Year Three	2,128,112	987,722
Year Four	773,698	731,348
Year Five	651,885	353,990
Year Six and Prior	1,012,958	1,098,194
Revolving	1,838,626	1,765,364
Total	11,392,349	10,895,033
Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	57,951	21,341
Year Two	40,695	52,821
Year Three	11,792	39,340
Year Four	17,706	47,255
Year Five	30,467	45,120
Year Six and Prior	61,931	33,241
Revolving	33,510	38,857
Total	254,052	277,975
Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	103,921	48,034
Year Two	130,920	23,598
Year Three	33,047	21,125
Year Four	11,501	53,942
Year Five	38,127	47,851
Year Six and Prior	73,492	36,009
Revolving	31,236	24,785
Total	422,244	255,344
Commercial and industrial | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Year One	648,895	986,432
Year Two	811,664	457,737
Year Three	336,793	270,075
Year Four	196,484	129,656
Year Five	99,388	66,204
Year Six and Prior	338,217	431,385
Revolving	1,220,606	1,122,925
Total	3,652,047	3,464,414
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	245
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	794
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	680
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	1,425
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	563
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	1,949
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	2,966
Charge-offs	8,622	6,964
Commercial and industrial | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	608,030	967,103
Year Two	779,218	442,001
Year Three	333,900	260,021
Year Four	187,406	101,998
Year Five	78,455	57,776
Year Six and Prior	327,775	421,312
Revolving	1,159,397	1,064,333
Total	3,474,181	3,314,544
Commercial and industrial | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	20,171	6,691
Year Two	12,658	14,366
Year Three	2,636	9,369
Year Four	5,447	22,171
Year Five	18,535	5,546
Year Six and Prior	7,489	6,758
Revolving	32,460	36,608
Total	99,396	101,509
Commercial and industrial | Commercial and industrial | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	20,694	12,638
Year Two	19,788	1,370
Year Three	257	685
Year Four	3,631	5,487
Year Five	2,398	2,882
Year Six and Prior	2,953	3,315
Revolving	28,749	21,984
Total	78,470	48,361
Commercial and industrial | PPP
Financing Receivable, Recorded Investment [Line Items]
Year One	0	0
Year Two	0	10,499
Year Three	2,727	526
Year Four	50	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	2,777	11,025
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	0
Charge-offs	0
Commercial and industrial | PPP | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	0	0
Year Two	0	7,807
Year Three	2,591	526
Year Four	50	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	2,641	8,333
Commercial and industrial | PPP | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	0	0
Year Two	0	2,685
Year Three	47	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	47	2,685
Commercial and industrial | PPP | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	0	0
Year Two	0	7
Year Three	89	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	89	7
Commercial and industrial | Owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	483,639	536,597
Year Two	584,334	809,158
Year Three	815,360	294,312
Year Four	239,528	281,106
Year Five	239,910	110,162
Year Six and Prior	234,332	198,755
Revolving	41,072	35,217
Total	2,638,175	2,265,307
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	802
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	63
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	0
Charge-offs	870	129
Commercial and industrial | Owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	443,683	511,547
Year Two	547,898	781,946
Year Three	799,978	255,476
Year Four	225,257	266,228
Year Five	225,405	103,943
Year Six and Prior	224,608	179,503
Revolving	41,072	34,117
Total	2,507,901	2,132,760
Commercial and industrial | Owner occupied commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	31,904	2,971
Year Two	10,489	23,802
Year Three	2,268	26,490
Year Four	11,609	6,358
Year Five	6,390	2,574
Year Six and Prior	2,171	7,353
Revolving	0	1,100
Total	64,831	70,648
Commercial and industrial | Owner occupied commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	8,052	22,079
Year Two	25,947	3,410
Year Three	13,114	12,346
Year Four	2,662	8,520
Year Five	8,115	3,645
Year Six and Prior	7,553	11,899
Revolving	0	0
Total	65,443	61,899
Commercial and industrial | Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	557,126	764,392
Year Two	692,427	522,651
Year Three	433,048	232,070
Year Four	207,164	316,201
Year Five	294,124	188,242
Year Six and Prior	342,844	236,439
Revolving	26,978	70,945
Total	2,553,711	2,330,940
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	52
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	29
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	399
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	147
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	0
Charge-offs	627	193
Commercial and industrial | Non-owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	480,683	756,059
Year Two	656,824	515,075
Year Three	423,420	227,383
Year Four	203,330	261,964
Year Five	262,541	127,400
Year Six and Prior	251,499	210,289
Revolving	26,978	70,398
Total	2,305,275	2,168,568
Commercial and industrial | Non-owner occupied commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	5,043	202
Year Two	952	6,784
Year Three	1,391	1,838
Year Four	0	16,019
Year Five	4,238	22,332
Year Six and Prior	34,262	9,970
Revolving	0	0
Total	45,886	57,145
Commercial and industrial | Non-owner occupied commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	71,400	8,131
Year Two	34,651	792
Year Three	8,237	2,849
Year Four	3,834	38,218
Year Five	27,345	38,510
Year Six and Prior	57,083	16,180
Revolving	0	547
Total	202,550	105,227
Commercial and industrial | Real estate construction
Financing Receivable, Recorded Investment [Line Items]
Year One	284,148	600,622
Year Two	510,388	344,965
Year Three	186,022	90,090
Year Four	10,068	21,667
Year Five	11,048	4,046
Year Six and Prior	3,470	6,440
Revolving	6,572	8,252
Total	1,011,716	1,076,082
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	284
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	32
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	0
Charge-offs	316	35
Commercial and industrial | Real estate construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	283,519	597,370
Year Two	468,646	328,391
Year Three	176,604	88,660
Year Four	9,889	21,221
Year Five	11,048	2,568
Year Six and Prior	3,405	6,274
Revolving	6,486	8,252
Total	959,597	1,052,736
Commercial and industrial | Real estate construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	0	2,587
Year Two	8,522	356
Year Three	0	173
Year Four	107	446
Year Five	0	1,478
Year Six and Prior	0	44
Revolving	86	0
Total	8,715	5,084
Commercial and industrial | Real estate construction | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	629	665
Year Two	33,220	16,218
Year Three	9,418	1,257
Year Four	72	0
Year Five	0	0
Year Six and Prior	65	122
Revolving	0	0
Total	43,404	18,262
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	154,922	337,260
Year Two	232,248	143,991
Year Three	116,740	83,376
Year Four	67,632	36,947
Year Five	29,172	35,367
Year Six and Prior	56,603	42,026
Revolving	261,867	241,543
Total	919,184	920,510
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	9
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	1
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	5,309
Charge-offs	5,319	3,217
Agricultural and agricultural real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	152,665	324,791
Year Two	208,375	140,252
Year Three	114,798	79,307
Year Four	67,006	34,447
Year Five	28,247	22,600
Year Six and Prior	43,663	38,672
Revolving	260,941	239,686
Total	875,695	879,755
Agricultural and agricultural real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	12	8,674
Year Two	7,616	3,224
Year Three	1,649	204
Year Four	4	1,859
Year Five	855	12,323
Year Six and Prior	12,591	2,682
Revolving	499	955
Total	23,226	29,921
Agricultural and agricultural real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	2,245	3,795
Year Two	16,257	515
Year Three	293	3,865
Year Four	622	641
Year Five	70	444
Year Six and Prior	349	672
Revolving	427	902
Total	20,263	10,834
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	72,382	189,867
Year Two	178,687	270,929
Year Three	245,707	65,739
Year Four	74,152	40,524
Year Five	42,974	37,951
Year Six and Prior	164,393	224,621
Revolving	19,534	23,730
Total	797,829	853,361
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	59
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	124
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	0
Charge-offs	183	307
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	71,470	189,133
Year Two	177,564	268,561
Year Three	241,362	64,627
Year Four	73,029	39,468
Year Five	42,526	34,863
Year Six and Prior	155,899	217,489
Revolving	19,534	23,331
Total	781,384	837,472
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	741	28
Year Two	150	1,273
Year Three	3,400	1,024
Year Four	464	99
Year Five	290	792
Year Six and Prior	3,649	4,895
Revolving	0	0
Total	8,694	8,111
Residential real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	171	706
Year Two	973	1,095
Year Three	945	88
Year Four	659	957
Year Five	158	2,296
Year Six and Prior	4,845	2,237
Revolving	0	399
Total	7,751	7,778
Consumer
Financing Receivable, Recorded Investment [Line Items]
Year One	46,405	80,800
Year Two	63,292	48,309
Year Three	36,554	11,999
Year Four	7,827	6,444
Year Five	3,863	4,989
Year Six and Prior	8,522	27,778
Revolving	326,743	326,394
Total	493,206	506,713
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	2
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	246
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	154
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	27
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	19
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	112
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	3,117
Charge-offs	3,677	7,451
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	45,595	80,592
Year Two	62,900	47,787
Year Three	35,459	11,722
Year Four	7,731	6,022
Year Five	3,663	4,840
Year Six and Prior	6,109	24,655
Revolving	324,218	325,247
Total	485,675	500,865
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	80	188
Year Two	308	331
Year Three	401	242
Year Four	75	303
Year Five	159	75
Year Six and Prior	1,769	1,539
Revolving	465	194
Total	3,257	2,872
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	730	20
Year Two	84	191
Year Three	694	35
Year Four	21	119
Year Five	41	74
Year Six and Prior	644	1,584
Revolving	2,060	953
Total	$ 4,274	$ 2,976