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LOANS AND CREDIT QUALITY - Loans on Nonaccrual With no Related Allowance (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	$ 35,254	$ 3,641
Total Nonaccrual	38,976	10,055
Commercial and industrial loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	13,857	3,306
Total Nonaccrual	14,392	6,790
Commercial and industrial loans | Owner occupied CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	706	2,521
Total Nonaccrual	706	2,521
Commercial and industrial loans | Commercial business
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	13,151	785
Total Nonaccrual	13,686	4,269
Consumer loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	773	335
Total Nonaccrual	3,960	3,265
Consumer loans | Single family
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	773	332
Total Nonaccrual	2,650
Consumer loans | Home equity and other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	0	3
Total Nonaccrual	1,310
CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	20,624	0
Total Nonaccrual	20,624	0
CRE | Non-owner occupied CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	16,803	0
Total Nonaccrual	16,803	0
CRE | CRE construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with no related ACL	3,821	0
Total Nonaccrual	$ 3,821	$ 0

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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