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LOANS AND CREDIT QUALITY - Activity in Allowance for Credit Losses by Loan Portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for credit losses by loan portfolio
Beginning balance	$ 47,123	$ 64,294	$ 41,772
Charge-offs	(1,266)	(2,349)	(2,009)
Recoveries	638	994	845
Provision	(4,995)	(15,816)	21,843
Ending balance	41,500	47,123	64,294
Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			1,843
Commercial and industrial loans | Real Estate Sector
Allowance for credit losses by loan portfolio
Beginning balance	21,486	27,935	22,535
Charge-offs	0	0	0
Recoveries	0	0	163
Provision	6,373	(6,449)	6,548
Ending balance	27,859	21,486	27,935
Commercial and industrial loans | Real Estate Sector | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(1,311)
Commercial and industrial loans | Commercial and Industrial Sector
Allowance for credit losses by loan portfolio
Beginning balance	17,279	22,037	6,554
Charge-offs	(1,098)	(1,739)	(1,536)
Recoveries	163	146	110
Provision	(12,067)	(3,165)	18,858
Ending balance	4,277	17,279	22,037
Commercial and industrial loans | Commercial and Industrial Sector | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(1,949)
Commercial and industrial loans | Non-owner occupied CRE
Allowance for credit losses by loan portfolio
Beginning balance	7,509	8,845	7,245
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(5,407)	(1,336)	4,992
Ending balance	2,102	7,509	8,845
Commercial and industrial loans | Non-owner occupied CRE | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(3,392)
Commercial and industrial loans | Multifamily
Allowance for credit losses by loan portfolio
Beginning balance	5,854	6,072	7,015
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	5,120	(218)	2,034
Ending balance	10,974	5,854	6,072
Commercial and industrial loans | Multifamily | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(2,977)
Commercial and industrial loans | Multifamily construction
Allowance for credit losses by loan portfolio
Beginning balance	507	4,903	2,848
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	491	(4,396)	1,362
Ending balance	998	507	4,903
Commercial and industrial loans | Multifamily construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			693
Commercial and industrial loans | CRE construction
Allowance for credit losses by loan portfolio
Beginning balance	150	1,670	624
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	46	(1,520)	1,161
Ending balance	196	150	1,670
Commercial and industrial loans | CRE construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(115)
Commercial and industrial loans | Single family construction
Allowance for credit losses by loan portfolio
Beginning balance	6,411	5,130	3,800
Charge-offs	0	0	0
Recoveries	0	0	163
Provision	6,007	1,281	(3,113)
Ending balance	12,418	6,411	5,130
Commercial and industrial loans | Single family construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			4,280
Commercial and industrial loans | Single family construction to permanent
Allowance for credit losses by loan portfolio
Beginning balance	1,055	1,315	1,003
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	116	(260)	112
Ending balance	1,171	1,055	1,315
Commercial and industrial loans | Single family construction to permanent | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			200
Commercial and industrial loans | Owner occupied CRE
Allowance for credit losses by loan portfolio
Beginning balance	5,006	4,994	3,639
Charge-offs	0	0	(896)
Recoveries	0	0	0
Provision	(3,976)	12	4,710
Ending balance	1,030	5,006	4,994
Commercial and industrial loans | Owner occupied CRE | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			(2,459)
Commercial and industrial loans | Commercial business
Allowance for credit losses by loan portfolio
Beginning balance	12,273	17,043	2,915
Charge-offs	(1,098)	(1,739)	(640)
Recoveries	163	146	110
Provision	(8,091)	(3,177)	14,148
Ending balance	3,247	12,273	17,043
Commercial and industrial loans | Commercial business | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			510
Consumer loans
Allowance for credit losses by loan portfolio
Beginning balance	8,358	14,322	12,683
Charge-offs	(168)	(610)	(473)
Recoveries	475	848	572
Provision	699	(6,202)	(3,563)
Ending balance	9,364	8,358	14,322
Consumer loans | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			5,103
Consumer loans | Single family
Allowance for credit losses by loan portfolio
Beginning balance	4,394	6,906	6,450
Charge-offs	0	(127)	(17)
Recoveries	143	291	187
Provision	1,073	(2,676)	(182)
Ending balance	5,610	4,394	6,906
Consumer loans | Single family | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			468
Consumer loans | Home equity and other
Allowance for credit losses by loan portfolio
Beginning balance	3,964	7,416	6,233
Charge-offs	(168)	(483)	(456)
Recoveries	332	557	385
Provision	(374)	(3,526)	(3,381)
Ending balance	$ 3,754	$ 3,964	7,416
Consumer loans | Home equity and other | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses by loan portfolio
Beginning balance			$ 4,635

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
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-Topic 326
-SubTopic 20
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-Paragraph 13
-Subparagraph (b)
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