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LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES - Loan Modifications for Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 1,687	$ 21,591	$ 6,918	$ 37,977
Loan modifications	13,818	56,932	13,818	56,932
30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	542	634	542	634
60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	574	348	574	348
90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	517	4,160	517	4,160
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	12,185	51,790	12,185	51,790
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	665	19,717	3,653	23,184
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	233	1,790	2,251	14,676
Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	789	35	888	68
Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	49	126	49
Commercial and industrial, including specialized lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 3,753	$ 1,491	$ 5,740
Percentage of Total by Financing Class		0.06%	0.02%	0.09%
Interest Rate Reduction (%)	0	0	0	0
Debt Forgiven	$ 0	$ 0	$ 0	$ 0
Loan modifications	6,286	17,844	6,286	17,844
Commercial and industrial, including specialized lending | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Commercial and industrial, including specialized lending | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Commercial and industrial, including specialized lending | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	3,743	0	3,743
Commercial and industrial, including specialized lending | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	$ 6,286	14,101	6,286	14,101
Commercial and industrial, including specialized lending | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 1,997	$ 731	$ 1,997
Term Extension (in months)	0 months	1 month	11 months	1 month
Commercial and industrial, including specialized lending | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 1,756	$ 760	$ 3,743
Term Extension (in months)	0 months	7 months	6 months	5 months
Commercial and industrial, including specialized lending | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0	$ 0	$ 0
Commercial and industrial, including specialized lending | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		0	$ 0	0
Multifamily
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 10,691
Percentage of Total by Financing Class				0.52%
Interest Rate Reduction (%)			0	0
Debt Forgiven			$ 0	$ 0
Loan modifications		10,691		10,691
Multifamily | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Multifamily | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Multifamily | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Multifamily | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		10,691		10,691
Multifamily | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Term Extension (in months)			0 months	0 months
Multifamily | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 10,691
Term Extension (in months)			0 months	5 months
Multifamily | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Multifamily | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				0
Commercial real estate non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 17,265		$ 17,265
Percentage of Total by Financing Class		1.44%		1.44%
Interest Rate Reduction (%)	0	0	0	0
Debt Forgiven	$ 0	$ 0	$ 0	$ 0
Loan modifications		17,265		17,265
Commercial real estate non-owner occupied | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Commercial real estate non-owner occupied | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Commercial real estate non-owner occupied | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Commercial real estate non-owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		17,265		17,265
Commercial real estate non-owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 17,265		$ 17,265
Term Extension (in months)	0 months	12 months	0 months	12 months
Commercial real estate non-owner occupied | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0		$ 0
Term Extension (in months)	0 months	0 months	0 months	0 months
Commercial real estate non-owner occupied | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0		$ 0
Commercial real estate non-owner occupied | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		0		0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 53
Percentage of Total by Financing Class				0.01%
Interest Rate Reduction (%)			0	0
Debt Forgiven			$ 0	$ 0
Loan modifications	$ 301	99	301	99
Residential real estate | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Residential real estate | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Residential real estate | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Residential real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	$ 301	99	$ 301	99
Residential real estate | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Term Extension (in months)			0 months	0 months
Residential real estate | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 53
Term Extension (in months)			0 months	5 months
Residential real estate | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Residential real estate | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				0
Manufactured housing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 131		$ 131
Percentage of Total by Financing Class		0.36%		0.36%
Interest Rate Reduction (%)	0	0.043	0	0.043
Debt Forgiven	$ 0	$ 0	$ 0	$ 0
Loan modifications	167	477	167	477
Manufactured housing | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	124	0	124
Manufactured housing | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	36	0	36
Manufactured housing | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0	0	0
Manufactured housing | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	$ 167	317	$ 167	317
Manufactured housing | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 82		$ 82
Term Extension (in months)	0 months	50 months	0 months	50 months
Manufactured housing | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0		$ 0
Term Extension (in months)	0 months	0 months	0 months	0 months
Manufactured housing | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0		$ 0
Manufactured housing | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		49		49
Personal installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 1,687	$ 442	$ 5,427	$ 4,097
Percentage of Total by Financing Class	0.37%	0.09%	1.19%	0.86%
Interest Rate Reduction (%)	0	0	0.115	0
Debt Forgiven	$ 794	$ 41	$ 867	$ 141
Loan modifications	7,064	10,556	7,064	10,556
Personal installment | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	542	510	542	510
Personal installment | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	574	312	574	312
Personal installment | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	517	417	517	417
Personal installment | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	5,431	9,317	5,431	9,317
Personal installment | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 665	$ 373	$ 2,922	$ 3,840
Term Extension (in months)	5 months	4 months	5 months	6 months
Personal installment | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 233	$ 34	$ 1,491	$ 189
Term Extension (in months)	9 months	7 months	7 months	7 months
Personal installment | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 789	$ 35	$ 888	$ 68
Personal installment | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 0	$ 126	$ 0

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