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LOANS AND ALLOWANCE FOR LOAN LOSSES - Components of Troubled Debt Restructured Loans and Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	$ 21,404	$ 8,021
NTM Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,940	2,962
Traditional Loans and Leases
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	18,464	5,059
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	15,790	2,276
Commercial | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	266	187
Commercial | NTM Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Commercial | NTM Loans | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Commercial | Traditional Loans and Leases | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	15,790	2,276
Commercial | Traditional Loans and Leases | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	266	187
Consumer | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	5,054	5,264
Consumer | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	294	294
Consumer | NTM Loans | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,646	2,668
Consumer | NTM Loans | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	294	294
Consumer | Traditional Loans and Leases | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,408	2,596
Consumer | Traditional Loans and Leases | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	$ 0	$ 0

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Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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-SubTopic 40
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-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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