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, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 92,433	$ 73,180	$ 85,960	$ 71,972	$ 71,972
Provision for credit losses	3,000	8,480	9,800	10,000
Loans charged-off	(29,111)	(1,076)	(29,619)	(1,580)	(3,468)
Recoveries	230	127	411	319
Net loans (charged-off) recovered	(28,881)	(949)	(29,208)	(1,261)
Ending balance	66,552	80,711	66,552	80,711	85,960
Unallocated
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	459	501	383	372	372
Provision for credit losses	(59)	(102)	17	27
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	400	399	400	399	383
Commercial Portfolio Segment \| Commercial and Industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	52,302	30,720	45,539	30,338	30,338
Provision for credit losses	2,148	8,412	8,889	8,954
Loans charged-off	(28,616)	(12)	(28,626)	(206)
Recoveries	48	41	80	75
Net loans (charged-off) recovered	(28,568)	29	(28,546)	(131)
Ending balance	25,882	39,161	25,882	39,161	45,539
Commercial Portfolio Segment \| Commercial Real Estate and Multifamily Residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	30,468	32,078	30,865	31,335	31,335
Provision for credit losses	588	422	165	1,139
Loans charged-off	0	(840)	0	(840)
Recoveries	26	27	52	53
Net loans (charged-off) recovered	26	(813)	52	(787)
Ending balance	31,082	31,687	31,082	31,687	30,865
Commercial Portfolio Segment \| Agri-business and Agricultural
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,500	4,112	3,541	4,150	4,150
Provision for credit losses	(201)	(444)	(242)	(482)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	3,299	3,668	3,299	3,668	3,541
Commercial Portfolio Segment \| Other Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	723	1,022	743	1,129	1,129
Provision for credit losses	(3)	(202)	(23)	(309)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Net loans (charged-off) recovered	0	0	0	0
Ending balance	720	820	720	820	743
Consumer Portfolio Segment \| Consumer 1-4 Family Mortgage
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,464	3,518	3,358	3,474	3,474
Provision for credit losses	294	68	418	89
Loans charged-off	(198)	(22)	(222)	(22)
Recoveries	30	22	36	45
Net loans (charged-off) recovered	(168)	0	(186)	23
Ending balance	3,590	3,586	3,590	3,586	3,358
Consumer Portfolio Segment \| Other Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,517	1,229	1,531	1,174	1,174
Provision for credit losses	233	326	576	582
Loans charged-off	(297)	(202)	(771)	(512)
Recoveries	126	37	243	146
Net loans (charged-off) recovered	(171)	(165)	(528)	(366)
Ending balance	$ 1,579	$ 1,390	$ 1,579	$ 1,390	$ 1,531

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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+ References

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

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
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