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LOANS AND CREDIT QUALITY - Loans on Nonaccrual with No Related Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	$ 46,276	$ 35,254
Total Nonaccrual	49,467	38,976
CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	32,914	20,624
Total Nonaccrual	32,914	20,624
CRE | Non-owner occupied CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	16,801	16,803
Total Nonaccrual		16,803
CRE | CRE construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	3,824	3,821
Total Nonaccrual		3,821
CRE | Multifamily
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	1,915	0
Total Nonaccrual		0
CRE | Multifamily construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	10,374	0
Total Nonaccrual		0
Commercial and industrial loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	12,308	13,857
Total Nonaccrual	12,308	14,392
Commercial and industrial loans | Owner occupied CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	686	706
Total Nonaccrual		706
Commercial and industrial loans | Commercial business
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	11,622	13,151
Total Nonaccrual		13,686
Consumer loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	1,054	773
Total Nonaccrual	4,245	3,960
Consumer loans | Single family
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	1,054	773
Total Nonaccrual	2,345	2,650
Consumer loans | Home equity and other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	0	0
Total Nonaccrual	$ 1,900	$ 1,310

X

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

+ Details

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X

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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