ALLOWANCE FOR LOAN LOSSES: Aging of the Recorded Investment in Loans by Past Due Category and Class of Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Aging of recorded investment in loans by past due category and class of loans
Loans		$ 2,592,827
Financing Receivable Recorded Investment	$ 2,823,969	2,618,553
Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	1,853,035
Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	694,944	603,777
Financing Receivable Recorded Investment	697,083	608,572
Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans		118,528
Financing Receivable Recorded Investment	141,246	118,641
Farmland | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	139,068
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans		350,681
Financing Receivable Recorded Investment	361,236	351,107
Non Farm, Non Residential | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	360,558
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans		146,147
Financing Receivable Recorded Investment	141,903	146,480
Agriculture | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	140,233
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans		305,612
Financing Receivable Recorded Investment	340,466	305,636
All Other Commercial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	339,263
First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans		314,730
Financing Receivable Recorded Investment	342,379	324,467
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans		60,362
Financing Receivable Recorded Investment	62,298	60,755
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans		53,346
Financing Receivable Recorded Investment	50,630	54,176
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans		151,042
Financing Receivable Recorded Investment	179,337	151,042
Multifamily | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	178,969
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans		15,918
Financing Receivable Recorded Investment	31,418	15,968
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans		441,283
Financing Receivable Recorded Investment	442,319	450,112
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans		31,401
Financing Receivable Recorded Investment	33,654	31,597
30 to 59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Loans	15,178	14,216
30 to 59 Days Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	1,132	685
30 to 59 Days Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans	57	22
30 to 59 Days Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	62	155
30 to 59 Days Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans	90	28
30 to 59 Days Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	390	0
30 to 59 Days Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	4,686	5,506
30 to 59 Days Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans	131	260
30 to 59 Days Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	179	421
30 to 59 Days Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans	342	0
30 to 59 Days Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	284	0
30 to 59 Days Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans	7,633	6,975
30 to 59 Days Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans	192	164
60 to 89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Loans	2,833	4,102
60 to 89 Days Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	388	746
60 to 89 Days Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans	0	0
60 to 89 Days Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	0	0
60 to 89 Days Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans	42	30
60 to 89 Days Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	0	0
60 to 89 Days Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	680	1,866
60 to 89 Days Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans	24	29
60 to 89 Days Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	120	68
60 to 89 Days Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans	146	0
60 to 89 Days Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	291	50
60 to 89 Days Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans	1,105	1,294
60 to 89 Days Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans	37	19
Greater than 90 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Loans	3,479	7,408
Greater than 90 Days Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	1,614	3,364
Greater than 90 Days Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans	0	91
Greater than 90 Days Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	0	271
Greater than 90 Days Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans	89	275
Greater than 90 Days Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	0	24
Greater than 90 Days Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	949	2,365
Greater than 90 Days Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans	58	104
Greater than 90 Days Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	283	341
Greater than 90 Days Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans	0	0
Greater than 90 Days Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	0	0
Greater than 90 Days Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans	486	560
Greater than 90 Days Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans	0	13
Total, Past Due
Aging of recorded investment in loans by past due category and class of loans
Loans	21,490	25,726
Total, Past Due | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	3,134	4,795
Total, Past Due | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans	57	113
Total, Past Due | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	62	426
Total, Past Due | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans	221	333
Total, Past Due | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	390	24
Total, Past Due | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	6,315	9,737
Total, Past Due | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans	213	393
Total, Past Due | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	582	830
Total, Past Due | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans	488	0
Total, Past Due | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	575	50
Total, Past Due | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans	9,224	8,829
Total, Past Due | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans	229	$ 196
Current
Aging of recorded investment in loans by past due category and class of loans
Loans	2,802,479
Current | Commercial & Industrial | Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	693,949
Current | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans	141,189
Current | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	361,174
Current | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans	141,682
Current | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans	340,076
Current | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	336,064
Current | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans	62,085
Current | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans	50,048
Current | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans	178,849
Current | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans	30,843
Current | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans	433,095
Current | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans	$ 33,425