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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	$ 37,853	$ 35,326
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	10,414	31,409
Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	19,113	1,040
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Construction | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	9,429
Construction and commercial multifamily | Construction | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Construction | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	187
Construction and commercial multifamily | Commercial multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost		188
Construction and commercial multifamily | Commercial multifamily | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Commercial multifamily | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	2,722	4,221
Commercial real estate | Commercial real estate owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	3,380	4,466
Commercial real estate | Commercial real estate owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial real estate | Commercial real estate owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	206	8,877
Commercial real estate | Commercial real estate non-owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	394	9,501
Commercial real estate | Commercial real estate non-owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial real estate | Commercial real estate non-owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	20,977	6,747
Commercial and industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	461	526
Commercial and industrial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Commercial and industrial | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	19,113	1,040
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	10,703	10,698
Residential real estate | Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	5,537	7,035
Residential real estate | Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Residential real estate | Residential real estate | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	1,725	1,901
Consumer loans | Home equity | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	638	262
Consumer loans | Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Consumer loans | Home equity | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	1,520	2,695
Consumer loans | Consumer other | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	4	2
Consumer loans | Consumer other | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	0	0
Consumer loans | Consumer other | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	$ 0	$ 0

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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