CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 28,358	$ 13,417
Non-accrual loans	27,054	26,336
Loans aquired with deteriorated credit quality	28,270
Current loans	6,166,391	4,274,495
Total loans	6,250,073	4,314,248
Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,282	587
Non-accrual loans	6,883	6,703
Loans aquired with deteriorated credit quality	7,138
Current loans	684,636	490,658
Total loans	702,939	497,948
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,552	2,213
Non-accrual loans	4,298	2,967
Loans aquired with deteriorated credit quality	1,343
Current loans	515,381	450,649
Total loans	525,574	455,829
Commercial Real Estate Portfolio Segment \| Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	307	0
Non-accrual loans	136	136
Loans aquired with deteriorated credit quality	0
Current loans	608,823	292,307
Total loans	609,266	292,443
Commercial Real Estate Portfolio Segment \| Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,765	775
Non-accrual loans	5,878	5,575
Loans aquired with deteriorated credit quality	17,485
Current loans	1,896,699	1,106,360
Total loans	1,923,827	1,112,710
Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,027	414
Non-accrual loans	3,440	3,582
Loans aquired with deteriorated credit quality	2,292
Current loans	1,177,662	853,200
Total loans	1,184,421	857,196
Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	14,425	9,428
Non-accrual loans	6,251	7,196
Loans aquired with deteriorated credit quality	12
Current loans	1,085,986	904,811
Total loans	1,106,674	921,435
Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
Non-accrual loans	168	177
Loans aquired with deteriorated credit quality	0
Current loans	197,204	176,510
Total loans	197,372	176,687
31-60 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	16,935	9,983
31-60 days \| Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	744	587
31-60 days \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,492	2,107
31-60 days \| Commercial Real Estate Portfolio Segment \| Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	28	0
31-60 days \| Commercial Real Estate Portfolio Segment \| Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	2,995	775
31-60 days \| Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	144	414
31-60 days \| Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	9,532	6,100
31-60 days \| Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
61-90 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	11,305	3,209
61-90 days \| Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,532	0
61-90 days \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,060	106
61-90 days \| Commercial Real Estate Portfolio Segment \| Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	279	0
61-90 days \| Commercial Real Estate Portfolio Segment \| Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	770	0
61-90 days \| Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	771	0
61-90 days \| Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,893	3,103
61-90 days \| Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	118	225
> 90 days \| Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	6	0
> 90 days \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days \| Commercial Real Estate Portfolio Segment \| Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days \| Commercial Real Estate Portfolio Segment \| Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days \| Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	112	0
> 90 days \| Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	225
> 90 days \| Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 0	$ 0

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
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Recorded Investment in financing receivables that are past due at the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 1
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