ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Schedule of Activity in the Allowance for Credit Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 68,914	$ 92,433	$ 68,995	$ 85,960	$ 85,960
Provision for credit losses	1,708	3,000	3,708	9,800
Loans charged-off	(431)	(29,111)	(2,627)	(29,619)	(30,414)
Recoveries	407	230	522	411
Net loans (charged-off) recovered	(24)	(28,881)	(2,105)	(29,208)
Ending balance	70,598	66,552	70,598	66,552	68,995
Unallocated
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	25	459	325	383	383
Provision for credit losses	573	(59)	273	17
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	598	400	598	400	325
Total commercial loans \| Commercial and Industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	28,053	52,302	28,436	45,539	45,539
Provision for credit losses	672	2,148	2,259	8,889
Loans charged-off	(94)	(28,616)	(2,080)	(28,626)
Recoveries	121	48	137	80
Net loans (charged-off) recovered	27	(28,568)	(1,943)	(28,546)
Ending balance	28,752	25,882	28,752	25,882	28,436
Total commercial loans \| Commercial Real Estate and Multifamily Residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	30,618	30,468	30,163	30,865	30,865
Provision for credit losses	(53)	588	376	165
Loans charged-off	0	0	0	0
Recoveries	90	26	116	52
Net loans (charged-off) recovered	90	26	116	52
Ending balance	30,655	31,082	30,655	31,082	30,163
Total commercial loans \| Agri-business and Agricultural
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,421	3,500	3,315	3,541	3,541
Provision for credit losses	(163)	(201)	(57)	(242)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	3,258	3,299	3,258	3,299	3,315
Total commercial loans \| Other Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	815	723	1,041	743	743
Provision for credit losses	267	(3)	41	(23)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	1,082	720	1,082	720	1,041
Total consumer loans \| Residential construction and land development loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,185	3,464	3,996	3,358	3,358
Provision for credit losses	129	294	376	418
Loans charged-off	(47)	(198)	(112)	(222)
Recoveries	99	30	106	36
Net loans (charged-off) recovered	52	(168)	(6)	(186)
Ending balance	4,366	3,590	4,366	3,590	3,996
Total consumer loans \| Other Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,797	1,517	1,719	1,531	1,531
Provision for credit losses	283	233	440	576
Loans charged-off	(290)	(297)	(435)	(771)
Recoveries	97	126	163	243
Net loans (charged-off) recovered	(193)	(171)	(272)	(528)
Ending balance	$ 1,887	$ 1,579	$ 1,887	$ 1,579	$ 1,719

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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