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LOANS AND ALLOWANCE FOR LOAN LOSSES - Composition of Nonaccrual Loans and Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 45,169	$ 21,585
NTM Loans
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	1,110	0
Traditional Loans and Leases
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	44,059	21,585
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	20,762	5,455
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	5,773	2,574
Commercial | Construction
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	2,519	0
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 | NTM Loans | Construction
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | Traditional Loans and Leases | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	20,762	5,455
Commercial | Traditional Loans and Leases | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | Traditional Loans and Leases | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	5,773	2,574
Commercial | Traditional Loans and Leases | Construction
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	2,519	0
Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	15,587	12,929
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	528	627
Consumer | NTM Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	1,110	0
Consumer | NTM Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Consumer | Traditional Loans and Leases | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	14,477	12,929
Consumer | Traditional Loans and Leases | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 528	$ 627

X

- Definition

Amount of financing receivable on nonaccrual status.

+ 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=118936363&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=119407570&loc=SL82919258-210447

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+ References

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