LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Information Pertaining to Non-accrual Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Allowance for loan losses
Nonaccrual Amortized Cost	$ 21,407	$ 31,114
Nonaccrual With No Related Allowance	8,834	21,404
Past Due 90 Days or Greater and Accruing	5,538	7,038
Interest Income Recognized on Nonaccrual	0	0
Construction and commercial multifamily \| Construction
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Construction and commercial multifamily \| Commercial multifamily
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate loans \| Commercial real estate owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	605	2,202
Nonaccrual With No Related Allowance	285	1,411
Past Due 90 Days or Greater and Accruing	199	1,100
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate loans \| Commercial real estate non-owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	3,798	191
Nonaccrual With No Related Allowance	45	73
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial and industrial loans
Allowance for loan losses
Nonaccrual Amortized Cost	8,665	16,992
Nonaccrual With No Related Allowance	5,586	14,223
Past Due 90 Days or Greater and Accruing	104	1,666
Interest Income Recognized on Nonaccrual	0	0
Residential real estate \| Residential real estate
Allowance for loan losses
Nonaccrual Amortized Cost	6,696	8,901
Nonaccrual With No Related Allowance	2,796	5,307
Past Due 90 Days or Greater and Accruing	3,991	2,823
Interest Income Recognized on Nonaccrual	0	0
Consumer loans \| Home equity
Allowance for loan losses
Nonaccrual Amortized Cost	961	1,568
Nonaccrual With No Related Allowance	122	388
Past Due 90 Days or Greater and Accruing	320	551
Interest Income Recognized on Nonaccrual	0	0
Consumer loans \| Consumer other
Allowance for loan losses
Nonaccrual Amortized Cost	682	1,260
Nonaccrual With No Related Allowance	0	2
Past Due 90 Days or Greater and Accruing	924	898
Interest Income Recognized on Nonaccrual	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
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