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LOANS AND CREDIT QUALITY - Loans Credit Quality by Year and Type (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	$ 2,544,193	$ 1,983,151
Financing receivable, year two	1,797,256	976,561
Financing receivable, year three	875,008	685,228
Financing receivable, year four	533,369	343,695
Financing receivable, year five	255,162	324,120
Financing receivable, prior to year five	814,005	704,248
Revolving	599,278	514,380
Revolving-term	8,049	11,466
Total LHFI	7,426,320	5,542,849
Fair Value, Recurring
Financing Receivable, Credit Quality Indicator [Line Items]
Single family LHFI	5,868	7,287
Fair Value, Recurring | Level 3
Financing Receivable, Credit Quality Indicator [Line Items]
Single family LHFI	5,868	7,287
30-59 days
Financing Receivable, Credit Quality Indicator [Line Items]
Total LHFI	4,823	1,208
60-89 days
Financing Receivable, Credit Quality Indicator [Line Items]
Total LHFI	2,020	894
90+ days
Financing Receivable, Credit Quality Indicator [Line Items]
Total LHFI	4,372	6,717
Commercial and industrial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	2,266,245	1,805,033
Financing receivable, year two	1,542,597	819,724
Financing receivable, year three	722,015	621,614
Financing receivable, year four	483,627	276,648
Financing receivable, year five	210,966	227,302
Financing receivable, prior to year five	577,415	496,716
Revolving	257,715	223,272
Revolving-term	4,032	6,131
Total LHFI	6,064,612	4,476,440
Commercial and industrial loans | Non-owner occupied CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	68,301	68,647
Financing receivable, year two	68,356	50,571
Financing receivable, year three	42,181	169,711
Financing receivable, year four	139,760	130,877
Financing receivable, year five	89,899	100,674
Financing receivable, prior to year five	246,786	183,024
Revolving	2,016	963
Revolving-term	786	892
Total LHFI	658,085	705,359
Commercial and industrial loans | Non-owner occupied CRE | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	68,301	68,647
Financing receivable, year two	68,356	50,571
Financing receivable, year three	42,181	169,711
Financing receivable, year four	139,760	130,877
Financing receivable, year five	87,197	100,674
Financing receivable, prior to year five	242,544	183,024
Revolving	2,016	963
Revolving-term	786	892
Total LHFI	651,141	705,359
Commercial and industrial loans | Non-owner occupied CRE | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	2,702	0
Financing receivable, prior to year five	4,242	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	6,944	0
Commercial and industrial loans | Non-owner occupied CRE | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	1,828,568	1,315,204
Financing receivable, year two	1,165,434	561,666
Financing receivable, year three	532,970	286,826
Financing receivable, year four	241,808	60,372
Financing receivable, year five	59,340	26,065
Financing receivable, prior to year five	147,634	165,225
Revolving	0	1
Revolving-term	0	0
Total LHFI	3,975,754	2,415,359
Commercial and industrial loans | Multifamily | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	1,828,568	1,315,204
Financing receivable, year two	1,165,434	561,666
Financing receivable, year three	528,077	286,826
Financing receivable, year four	221,974	60,372
Financing receivable, year five	59,340	26,065
Financing receivable, prior to year five	140,126	165,225
Revolving	0	1
Revolving-term	0	0
Total LHFI	3,943,519	2,415,359
Commercial and industrial loans | Multifamily | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	4,893	0
Financing receivable, year four	19,834	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	7,508	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	32,235	0
Commercial and industrial loans | Multifamily | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	18,110	7,825
Financing receivable, year two	63,394	22,863
Financing receivable, year three	13,613	7,173
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	95,117	37,861
Commercial and industrial loans | Multifamily construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	18,110	7,825
Financing receivable, year two	63,394	22,863
Financing receivable, year three	13,613	7,173
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	95,117	37,861
Commercial and industrial loans | Multifamily construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Multifamily construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | CRE construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	341	7,694
Financing receivable, year two	14,348	3,960
Financing receivable, year three	3,960	0
Financing receivable, year four	0	1,962
Financing receivable, year five	0	0
Financing receivable, prior to year five	305	556
Revolving	0	0
Revolving-term	0	0
Total LHFI	18,954	14,172
Commercial and industrial loans | CRE construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	341	7,694
Financing receivable, year two	14,348	3,960
Financing receivable, year three	3,960	0
Financing receivable, year four	0	1,962
Financing receivable, year five	0	0
Financing receivable, prior to year five	305	556
Revolving	0	0
Revolving-term	0	0
Total LHFI	18,954	14,172
Commercial and industrial loans | CRE construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | CRE construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Single family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	149,133	146,595
Financing receivable, year two	57,718	35,640
Financing receivable, year three	24,807	14,509
Financing receivable, year four	519	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	74	77
Revolving	123,303	99,206
Revolving-term	0	0
Total LHFI	355,554	296,027
Commercial and industrial loans | Single family construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	149,133	146,595
Financing receivable, year two	50,936	35,640
Financing receivable, year three	24,807	14,509
Financing receivable, year four	519	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	74	77
Revolving	123,303	99,206
Revolving-term	0	0
Total LHFI	348,772	296,027
Commercial and industrial loans | Single family construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Single family construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	6,782	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	6,782	0
Commercial and industrial loans | Single family construction to permanent
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	66,034	90,311
Financing receivable, year two	76,814	42,636
Financing receivable, year three	11,128	13,362
Financing receivable, year four	3,268	1,775
Financing receivable, year five	794	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	158,038	148,084
Commercial and industrial loans | Single family construction to permanent | Current
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	66,034	90,311
Financing receivable, year two	76,814	42,636
Financing receivable, year three	11,128	13,362
Financing receivable, year four	3,268	1,775
Financing receivable, year five	794	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	158,038	148,084
Commercial and industrial loans | Single family construction to permanent | 30-59 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Single family construction to permanent | 60-89 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Single family construction to permanent | 90+ days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	0	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	0	0
Commercial and industrial loans | Owner occupied CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	70,192	70,902
Financing receivable, year two	52,662	47,536
Financing receivable, year three	44,778	76,088
Financing receivable, year four	71,652	51,023
Financing receivable, year five	44,785	83,212
Financing receivable, prior to year five	158,187	125,248
Revolving	3	798
Revolving-term	1,104	2,899
Total LHFI	443,363	457,706
Commercial and industrial loans | Owner occupied CRE | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	70,192	70,902
Financing receivable, year two	51,919	47,536
Financing receivable, year three	44,778	57,423
Financing receivable, year four	71,652	47,716
Financing receivable, year five	36,457	67,042
Financing receivable, prior to year five	139,691	106,659
Revolving	3	798
Revolving-term	1,104	2,839
Total LHFI	415,796	400,915
Commercial and industrial loans | Owner occupied CRE | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	743	0
Financing receivable, year three	0	0
Financing receivable, year four	0	2,196
Financing receivable, year five	6,179	6,019
Financing receivable, prior to year five	13,485	145
Revolving	0	0
Revolving-term	0	60
Total LHFI	20,407	8,420
Commercial and industrial loans | Owner occupied CRE | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	18,665
Financing receivable, year four	0	1,111
Financing receivable, year five	2,149	10,151
Financing receivable, prior to year five	5,011	18,444
Revolving	0	0
Revolving-term	0	0
Total LHFI	7,160	48,371
Commercial and industrial loans | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	65,566	97,855
Financing receivable, year two	43,871	54,852
Financing receivable, year three	48,578	53,945
Financing receivable, year four	26,620	30,639
Financing receivable, year five	16,148	17,351
Financing receivable, prior to year five	24,429	22,586
Revolving	132,393	122,304
Revolving-term	2,142	2,340
Total LHFI	359,747	401,872
Commercial and industrial loans | Commercial business | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	65,566	88,139
Financing receivable, year two	42,921	51,453
Financing receivable, year three	45,940	44,882
Financing receivable, year four	18,594	24,711
Financing receivable, year five	13,548	11,859
Financing receivable, prior to year five	18,779	21,258
Revolving	130,427	112,759
Revolving-term	2,041	2,104
Total LHFI	337,816	357,165
Commercial and industrial loans | Commercial business | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	612	0
Financing receivable, year three	0	7,396
Financing receivable, year four	3,577	0
Financing receivable, year five	9	4,396
Financing receivable, prior to year five	3,444	0
Revolving	403	5,613
Revolving-term	0	134
Total LHFI	8,045	17,539
Commercial and industrial loans | Commercial business | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	9,716
Financing receivable, year two	338	3,399
Financing receivable, year three	2,638	1,667
Financing receivable, year four	4,449	5,928
Financing receivable, year five	2,591	1,096
Financing receivable, prior to year five	2,206	1,328
Revolving	1,563	3,932
Revolving-term	101	102
Total LHFI	13,886	27,168
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	277,948	178,118
Financing receivable, year two	254,659	156,837
Financing receivable, year three	152,993	63,614
Financing receivable, year four	49,742	67,047
Financing receivable, year five	44,196	96,818
Financing receivable, prior to year five	236,590	207,532
Revolving	341,563	291,108
Revolving-term	4,017	5,335
Total LHFI	1,361,708	1,066,409
Consumer loans | Single family
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	273,786	176,110
Financing receivable, year two	253,937	156,360
Financing receivable, year three	152,773	63,221
Financing receivable, year four	49,592	66,515
Financing receivable, year five	44,124	96,302
Financing receivable, prior to year five	234,789	204,823
Revolving	0	0
Revolving-term	0	0
Total LHFI	1,009,001	763,331
Consumer loans | Single family | Current
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	273,786	176,110
Financing receivable, year two	253,937	156,360
Financing receivable, year three	152,773	62,369
Financing receivable, year four	49,302	66,063
Financing receivable, year five	43,511	95,988
Financing receivable, prior to year five	231,277	204,229
Revolving	0	0
Revolving-term	0	0
Total LHFI	1,004,586	761,119
Consumer loans | Single family | 30-59 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	291
Financing receivable, year four	0	0
Financing receivable, year five	340	0
Financing receivable, prior to year five	2,113	0
Revolving	0	0
Revolving-term	0	0
Total LHFI	2,453	291
Consumer loans | Single family | 60-89 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	314
Financing receivable, prior to year five	258	471
Revolving	0	0
Revolving-term	0	0
Total LHFI	258	785
Consumer loans | Single family | 90+ days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	0	0
Financing receivable, year three	0	561
Financing receivable, year four	290	452
Financing receivable, year five	273	0
Financing receivable, prior to year five	1,141	123
Revolving	0	0
Revolving-term	0	0
Total LHFI	1,704	1,136
Consumer loans | Home equity and other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	4,162	2,008
Financing receivable, year two	722	477
Financing receivable, year three	220	393
Financing receivable, year four	150	532
Financing receivable, year five	72	516
Financing receivable, prior to year five	1,801	2,709
Revolving	341,563	291,108
Revolving-term	4,017	5,335
Total LHFI	352,707	303,078
Consumer loans | Home equity and other | Current
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	4,156	2,005
Financing receivable, year two	692	474
Financing receivable, year three	220	393
Financing receivable, year four	150	532
Financing receivable, year five	72	516
Financing receivable, prior to year five	1,593	2,609
Revolving	340,567	290,512
Revolving-term	4,017	5,273
Total LHFI	351,467	302,314
Consumer loans | Home equity and other | 30-59 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	0
Financing receivable, year two	6	3
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	9	94
Revolving	446	40
Revolving-term	0	0
Total LHFI	461	137
Consumer loans | Home equity and other | 60-89 days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	6	0
Financing receivable, year two	24	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	48	0
Revolving	517	12
Revolving-term	0	62
Total LHFI	595	74
Consumer loans | Home equity and other | 90+ days
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one	0	3
Financing receivable, year two	0	0
Financing receivable, year three	0	0
Financing receivable, year four	0	0
Financing receivable, year five	0	0
Financing receivable, prior to year five	151	6
Revolving	33	544
Revolving-term	0	0
Total LHFI	$ 184	$ 553

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- Definition

Financing Receivable, Excluding Accrued Interest, Revolving, Term

+ References

No definition available.

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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- Definition

Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
-Paragraph 79
-URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448

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