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LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses for Loans, Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 106,094	$ 127,302	$ 63,575
Charge-offs	(28,058)	(31,018)	(45,795)
Recoveries	7,220	10,311	8,005
Provision for Credit Losses	11,014	(501)	76,083
Balance at End of Period	96,270	106,094	127,302
Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			25,434
Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			89,009
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3,206	5,111	2,713
Charge-offs	0	0	(834)
Recoveries	0	0	0
Provision for Credit Losses	(1,979)	(1,905)	3,574
Balance at End of Period	1,227	3,206	5,111
Construction and commercial multifamily | Construction | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			(342)
Construction and commercial multifamily | Construction | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			2,371
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,120	5,916	4,413
Charge-offs	(94)	(404)	(100)
Recoveries	112	157	100
Provision for Credit Losses	(4,328)	451	3,345
Balance at End of Period	1,810	6,120	5,916
Construction and commercial multifamily | Commercial multifamily | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			(1,842)
Construction and commercial multifamily | Commercial multifamily | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			2,571
Commercial real estate loans | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	12,752	12,380	4,880
Charge-offs	(687)	(1,640)	(8,686)
Recoveries	702	204	1,053
Provision for Credit Losses	(2,028)	1,808	9,071
Balance at End of Period	10,739	12,752	12,380
Commercial real estate loans | Commercial real estate owner occupied | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			6,062
Commercial real estate loans | Commercial real estate owner occupied | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			10,942
Commercial real estate loans | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	32,106	35,850	16,344
Charge-offs	(5,894)	(14,557)	(11,653)
Recoveries	1,549	2,522	307
Provision for Credit Losses	2,963	8,291	19,651
Balance at End of Period	30,724	32,106	35,850
Commercial real estate loans | Commercial real estate non-owner occupied | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			11,201
Commercial real estate loans | Commercial real estate non-owner occupied | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			27,545
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	22,584	25,013	20,099
Charge-offs	(18,447)	(10,841)	(19,328)
Recoveries	3,050	4,565	4,285
Provision for Credit Losses	11,556	3,847	22,146
Balance at End of Period	18,743	22,584	25,013
Commercial and industrial loans | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			(2,189)
Commercial and industrial loans | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			17,910
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	22,406	28,491	9,970
Charge-offs	(555)	(1,664)	(2,285)
Recoveries	1,019	1,767	1,359
Provision for Credit Losses	(4,204)	(6,188)	12,648
Balance at End of Period	18,666	22,406	28,491
Residential real estate | Residential real estate | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			6,799
Residential real estate | Residential real estate | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			16,769
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	4,006	6,482	1,470
Charge-offs	(166)	(334)	(347)
Recoveries	283	335	292
Provision for Credit Losses	(1,950)	(2,477)	183
Balance at End of Period	2,173	4,006	6,482
Consumer loans | Home equity | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			4,884
Consumer loans | Home equity | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			6,354
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,914	8,059	3,686
Charge-offs	(2,215)	(1,578)	(2,562)
Recoveries	505	761	609
Provision for Credit Losses	10,984	(4,328)	5,465
Balance at End of Period	$ 12,188	$ 2,914	8,059
Consumer loans | Consumer other | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			861
Consumer loans | Consumer other | Sub-total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period			$ 4,547

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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