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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 7,025	$ 4,200	$ 26,545	$ 11,862
Loan modifications	42,564	11,864	42,564	11,864
30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	455	837	455	837
60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	355	565	355	565
90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	932	523	932	523
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	40,822	9,939	40,822	9,939
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	1,788	3,863	7,066	11,085
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	4,855	210	18,992	442
Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	37	28	93	222
Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	79	$ 99	128	$ 113
Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	266		266
Commercial and industrial, including specialized lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 4,800		$ 10,049
Percentage of Total by Financing Class	0.07%		0.15%
Interest Rate Reduction (%)	0	0	0	0
Debt Forgiven	$ 0	$ 0	$ 0	$ 0
Loan modifications	22,625		22,625
Commercial and industrial, including specialized lending | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0		0
Commercial and industrial, including specialized lending | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0		0
Commercial and industrial, including specialized lending | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	230		230
Commercial and industrial, including specialized lending | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	22,395		22,395
Commercial and industrial, including specialized lending | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0		$ 2,000
Term Extension and Payment Deferral (in months)	0 months	0 months	1 month	0 months
Commercial and industrial, including specialized lending | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 4,800		$ 8,049
Term Extension and Payment Deferral (in months)	10 months	0 months	8 months	0 months
Commercial and industrial, including specialized lending | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 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
Commercial and industrial, including specialized lending | Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	0		0
Manufactured housing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 97	$ 99	$ 224	$ 119
Percentage of Total by Financing Class	0.28%	0.25%	0.65%	0.30%
Interest Rate Reduction (%)	0.038	0.044	0.040	0.043
Debt Forgiven	$ 0	$ 0	$ 0	$ 0
Loan modifications	349	119	349	119
Manufactured housing | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	19	0	19	0
Manufactured housing | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	24	0	24	0
Manufactured housing | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	37	0	37	0
Manufactured housing | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	269	119	269	119
Manufactured housing | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 18	$ 0	$ 96	$ 6
Term Extension and Payment Deferral (in months)	115 months	31 months	78 months	30 months
Manufactured housing | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 0	$ 0	$ 0
Term Extension and Payment Deferral (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	$ 0	$ 0
Manufactured housing | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	79	99	128	113
Manufactured housing | Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	0		0
Personal installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 2,128	$ 4,101	$ 5,507	$ 11,574
Percentage of Total by Financing Class	0.47%	0.42%	1.21%	1.20%
Interest Rate Reduction (%)	0.136	0	0.136	0
Debt Forgiven	$ 12	$ 20	$ 153	$ 183
Loan modifications	8,825	11,576	8,825	11,576
Personal installment | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	436	837	436	837
Personal installment | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	331	565	331	565
Personal installment | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	665	354	665	354
Personal installment | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	7,393	9,820	7,393	9,820
Personal installment | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 1,770	$ 3,863	$ 4,970	$ 10,910
Term Extension and Payment Deferral (in months)	5 months	6 months	5 months	6 months
Personal installment | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 55	$ 210	$ 178	$ 442
Term Extension and Payment Deferral (in months)	7 months	6 months	7 months	6 months
Personal installment | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 37	$ 28	$ 93	$ 222
Personal installment | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	0	0	0	$ 0
Personal installment | Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	266		266
Multifamily
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 10,713
Percentage of Total by Financing Class			0.51%
Interest Rate Reduction (%)			0	0
Debt Forgiven			$ 0	$ 0
Loan modifications	10,713		10,713
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	10,713		10,713
Multifamily | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 0
Term Extension and Payment Deferral (in months)			0 months	0 months
Multifamily | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 10,713
Term Extension and Payment Deferral (in months)			5 months	0 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
Multifamily | Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 52
Percentage of Total by Financing Class			0.01%
Interest Rate Reduction (%)			0	0
Debt Forgiven			$ 0	$ 0
Loan modifications	52		52
Residential real estate | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0		0
Residential real estate | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0		0
Residential real estate | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0		0
Residential real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	$ 52		52
Residential real estate | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 0
Term Extension and Payment Deferral (in months)			0 months	0 months
Residential real estate | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 52
Term Extension and Payment Deferral (in months)			5 months	0 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
Residential real estate | Contractual Interest Rate Reduction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans			$ 0
Commercial real estate owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 169
Percentage of Total by Financing Class				0.02%
Interest Rate Reduction (%)			0	0
Debt Forgiven			$ 0	$ 0
Loan modifications		169		169
Commercial real estate owner occupied | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Commercial real estate owner occupied | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		0		0
Commercial real estate owner occupied | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		169		169
Commercial real estate owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications		$ 0		0
Commercial real estate owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 169
Term Extension and Payment Deferral (in months)			0 months	4 months
Commercial real estate owner occupied | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Term Extension and Payment Deferral (in months)			0 months	0 months
Commercial real estate owner occupied | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0
Commercial real estate owner occupied | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans				$ 0