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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Composition of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 45,621	$ 35,900
Nonaccrual Loans with no ACL	35,472	32,066
NTM Loans
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	6,644	8,697
Traditional Loans
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	38,977	27,203
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	11,834	13,821
Nonaccrual Loans with no ACL	11,834	13,088
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	4,419	4,654
Nonaccrual Loans with no ACL	4,419	4,654
Commercial | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	12,824	3,749
Nonaccrual Loans with no ACL	5,204	648
Commercial | NTM Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | NTM Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | NTM Loans | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	11,834	13,821
Commercial | Traditional Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	4,419	4,654
Commercial | Traditional Loans | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	12,824	3,749
Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	16,544	13,519
Nonaccrual Loans with no ACL	14,015	13,519
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	157
Nonaccrual Loans with no ACL	0	157
Consumer | NTM Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	6,644	8,697
Consumer | NTM Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	9,900	4,822
Consumer | Traditional Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 0	$ 157

X

- Definition

Amount of financing receivable on nonaccrual status with no allowance for credit loss.

+ 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 (d)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)

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