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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Impaired [Line Items]
Total loans	$ 7,289,320	$ 7,251,480
Collateral Pledged
Financing Receivable, Impaired [Line Items]
Total loans	41,208	49,236
Commercial
Financing Receivable, Impaired [Line Items]
Total loans	1,003	14,207
Residential
Financing Receivable, Impaired [Line Items]
Total loans	14,017	18,507
Business Assets
Financing Receivable, Impaired [Line Items]
Total loans	26,084	16,287
Automobile
Financing Receivable, Impaired [Line Items]
Total loans	104	235
Commercial | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	1,993,416	2,668,984
Commercial | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	1,240,927	1,311,105
Commercial | SBA
Financing Receivable, Impaired [Line Items]
Total loans	85,674	205,548
Commercial | Collateral Pledged | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	20,367	18,331
Commercial | Collateral Pledged | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	910
Commercial | Collateral Pledged | SBA
Financing Receivable, Impaired [Line Items]
Total loans	10,415	16,658
Commercial | Commercial | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	0	13,518
Commercial | Commercial | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	910
Commercial | Commercial | SBA
Financing Receivable, Impaired [Line Items]
Total loans	93	689
Commercial | Residential | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	0	37
Commercial | Residential | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	0
Commercial | Residential | SBA
Financing Receivable, Impaired [Line Items]
Total loans	4,605	4,458
Commercial | Business Assets | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	20,367	4,776
Commercial | Business Assets | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	0
Commercial | Business Assets | SBA
Financing Receivable, Impaired [Line Items]
Total loans	5,717	11,511
Commercial | Automobile | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Commercial | Automobile | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total loans	0
Commercial | Automobile | SBA
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	1,947,652	1,420,023
Consumer | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	86,701	102,925
Consumer | Collateral Pledged | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	9,331	14,012
Consumer | Collateral Pledged | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	185	235
Consumer | Commercial | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Commercial | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Residential | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	9,331	14,012
Consumer | Residential | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	81	0
Consumer | Business Assets | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Business Assets | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Automobile | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Total loans	0	0
Consumer | Automobile | Other consumer
Financing Receivable, Impaired [Line Items]
Total loans	$ 104	$ 235

X

- 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

Reference 2: 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

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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+ References

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