LOANS (Loans by Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Year One	$ 3,495,970	$ 3,398,505
Year Two	2,608,239	1,480,531
Year Three	1,048,187	1,234,564
Year Four	832,545	751,481
Year Five	446,961	586,363
Year Six and Prior	1,167,444	1,134,111
Revolving	1,829,006	1,369,017
Total	11,428,352	9,954,572
Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	3,426,595	3,279,966
Year Two	2,531,820	1,391,907
Year Three	987,722	1,116,618
Year Four	731,348	617,337
Year Five	353,990	522,707
Year Six and Prior	1,098,194	978,672
Revolving	1,765,364	1,306,109
Total	10,895,033	9,213,316
Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	48,034	41,994
Year Two	23,598	49,038
Year Three	21,125	63,780
Year Four	53,942	96,879
Year Five	47,851	24,388
Year Six and Prior	36,009	62,313
Revolving	24,785	30,833
Total	255,344	369,225
Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	21,341	76,545
Year Two	52,821	39,586
Year Three	39,340	54,166
Year Four	47,255	37,265
Year Five	45,120	39,268
Year Six and Prior	33,241	93,126
Revolving	38,857	32,075
Total	277,975	372,031
Commercial and industrial | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Year One	986,432	635,180
Year Two	457,737	378,714
Year Three	270,075	229,560
Year Four	129,656	106,439
Year Five	66,204	181,939
Year Six and Prior	431,385	357,122
Revolving	1,122,925	756,131
Total	3,464,414	2,645,085
Commercial and industrial | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	967,103	604,659
Year Two	442,001	359,533
Year Three	260,021	203,960
Year Four	101,998	89,694
Year Five	57,776	171,709
Year Six and Prior	421,312	330,094
Revolving	1,064,333	708,525
Total	3,314,544	2,468,174
Commercial and industrial | Commercial and industrial | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	12,638	10,633
Year Two	1,370	12,790
Year Three	685	12,550
Year Four	5,487	8,210
Year Five	2,882	3,611
Year Six and Prior	3,315	14,976
Revolving	21,984	24,626
Total	48,361	87,396
Commercial and industrial | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	6,691	19,888
Year Two	14,366	6,391
Year Three	9,369	13,050
Year Four	22,171	8,535
Year Five	5,546	6,619
Year Six and Prior	6,758	12,052
Revolving	36,608	22,980
Total	101,509	89,515
Commercial and industrial | Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment [Line Items]
Year One	0	174,028
Year Two	10,499	25,855
Year Three	526	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	11,025	199,883
Commercial and industrial | Paycheck Protection Program ("PPP") | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	0	146,370
Year Two	7,807	25,707
Year Three	526	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	8,333	172,077
Commercial and industrial | Paycheck Protection Program ("PPP") | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	0	10,726
Year Two	7	127
Year Three	0	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	7	10,853
Commercial and industrial | Paycheck Protection Program ("PPP") | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	0	16,932
Year Two	2,685	21
Year Three	0	0
Year Four	0	0
Year Five	0	0
Year Six and Prior	0	0
Revolving	0	0
Total	2,685	16,953
Commercial and industrial | Owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	536,597	956,677
Year Two	809,158	362,777
Year Three	294,312	336,990
Year Four	281,106	194,246
Year Five	110,162	144,086
Year Six and Prior	198,755	209,540
Revolving	35,217	36,018
Total	2,265,307	2,240,334
Commercial and industrial | Owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	511,547	940,043
Year Two	781,946	328,052
Year Three	255,476	315,497
Year Four	266,228	180,936
Year Five	103,943	115,142
Year Six and Prior	179,503	189,647
Revolving	34,117	34,233
Total	2,132,760	2,103,550
Commercial and industrial | Owner occupied commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	22,079	4,676
Year Two	3,410	13,956
Year Three	12,346	7,759
Year Four	8,520	10,501
Year Five	3,645	15,032
Year Six and Prior	11,899	6,830
Revolving	0	35
Total	61,899	58,789
Commercial and industrial | Owner occupied commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	2,971	11,958
Year Two	23,802	20,769
Year Three	26,490	13,734
Year Four	6,358	2,809
Year Five	2,574	13,912
Year Six and Prior	7,353	13,063
Revolving	1,100	1,750
Total	70,648	77,995
Commercial and industrial | Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	764,392	630,444
Year Two	522,651	282,814
Year Three	232,070	373,109
Year Four	316,201	269,649
Year Five	188,242	170,947
Year Six and Prior	236,439	254,459
Revolving	70,945	29,169
Total	2,330,940	2,010,591
Commercial and industrial | Non-owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	756,059	609,968
Year Two	515,075	263,093
Year Three	227,383	315,815
Year Four	261,964	236,823
Year Five	127,400	152,059
Year Six and Prior	210,289	166,792
Revolving	70,398	28,728
Total	2,168,568	1,773,278
Commercial and industrial | Non-owner occupied commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	8,131	4,754
Year Two	792	9,109
Year Three	2,849	35,496
Year Four	38,218	29,227
Year Five	38,510	4,865
Year Six and Prior	16,180	35,901
Revolving	547	0
Total	105,227	119,352
Commercial and industrial | Non-owner occupied commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	202	15,722
Year Two	6,784	10,612
Year Three	1,838	21,798
Year Four	16,019	3,599
Year Five	22,332	14,023
Year Six and Prior	9,970	51,766
Revolving	0	441
Total	57,145	117,961
Commercial and industrial | Real estate construction
Financing Receivable, Recorded Investment [Line Items]
Year One	600,622	383,987
Year Two	344,965	207,787
Year Three	90,090	171,797
Year Four	21,667	62,987
Year Five	4,046	7,163
Year Six and Prior	6,440	7,877
Revolving	8,252	14,521
Total	1,076,082	856,119
Commercial and industrial | Real estate construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	597,370	381,283
Year Two	328,391	206,879
Year Three	88,660	169,606
Year Four	21,221	14,197
Year Five	2,568	7,163
Year Six and Prior	6,274	7,823
Revolving	8,252	14,507
Total	1,052,736	801,458
Commercial and industrial | Real estate construction | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	665	2,704
Year Two	16,218	858
Year Three	1,257	2,145
Year Four	0	44,846
Year Five	0	0
Year Six and Prior	122	0
Revolving	0	14
Total	18,262	50,567
Commercial and industrial | Real estate construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	2,587	0
Year Two	356	50
Year Three	173	46
Year Four	446	3,944
Year Five	1,478	0
Year Six and Prior	44	54
Revolving	0	0
Total	5,084	4,094
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	337,260	230,447
Year Two	143,991	113,515
Year Three	83,376	57,525
Year Four	36,947	51,008
Year Five	35,367	25,274
Year Six and Prior	42,026	46,445
Revolving	241,543	229,539
Total	920,510	753,753
Agricultural and agricultural real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	324,791	217,179
Year Two	140,252	102,030
Year Three	79,307	47,927
Year Four	34,447	32,913
Year Five	22,600	22,029
Year Six and Prior	38,672	35,548
Revolving	239,686	220,065
Total	879,755	677,691
Agricultural and agricultural real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	3,795	4,018
Year Two	515	10,390
Year Three	3,865	4,688
Year Four	641	2,270
Year Five	444	33
Year Six and Prior	672	2,038
Revolving	902	2,948
Total	10,834	26,385
Agricultural and agricultural real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	8,674	9,250
Year Two	3,224	1,095
Year Three	204	4,910
Year Four	1,859	15,825
Year Five	12,323	3,212
Year Six and Prior	2,682	8,859
Revolving	955	6,526
Total	29,921	49,677
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Year One	189,867	317,748
Year Two	270,929	88,298
Year Three	65,739	51,922
Year Four	40,524	57,542
Year Five	37,951	45,492
Year Six and Prior	224,621	238,264
Revolving	23,730	30,017
Total	853,361	829,283
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	189,133	311,292
Year Two	268,561	86,355
Year Three	64,627	50,762
Year Four	39,468	53,773
Year Five	34,863	43,619
Year Six and Prior	217,489	230,566
Revolving	23,331	29,017
Total	837,472	805,384
Residential real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	706	3,928
Year Two	1,095	1,499
Year Three	88	750
Year Four	957	1,452
Year Five	2,296	734
Year Six and Prior	2,237	1,977
Revolving	399	1,000
Total	7,778	11,340
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	28	2,528
Year Two	1,273	444
Year Three	1,024	410
Year Four	99	2,317
Year Five	792	1,139
Year Six and Prior	4,895	5,721
Revolving	0	0
Total	8,111	12,559
Consumer
Financing Receivable, Recorded Investment [Line Items]
Year One	80,800	69,994
Year Two	48,309	20,771
Year Three	11,999	13,661
Year Four	6,444	9,610
Year Five	4,989	11,462
Year Six and Prior	27,778	20,404
Revolving	326,394	273,622
Total	506,713	419,524
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Year One	80,592	69,172
Year Two	47,787	20,258
Year Three	11,722	13,051
Year Four	6,022	9,001
Year Five	4,840	10,986
Year Six and Prior	24,655	18,202
Revolving	325,247	271,034
Total	500,865	411,704
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Year One	20	555
Year Two	191	309
Year Three	35	392
Year Four	119	373
Year Five	74	113
Year Six and Prior	1,584	591
Revolving	953	2,210
Total	2,976	4,543
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Year One	188	267
Year Two	331	204
Year Three	242	218
Year Four	303	236
Year Five	75	363
Year Six and Prior	1,539	1,611
Revolving	194	378
Total	$ 2,872	$ 3,277