CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio) (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 13,262	$ 11,787
Non-accrual loans and leases	27,934	30,031
Current loans	3,630,621	3,452,701
Total loans and leases	3,672,624	3,495,370
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	807	851
Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,427	523
Non-accrual loans and leases	4,263	3,696
Current loans	445,479	461,002
Total loans and leases	451,711	465,765
Commercial | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	542	544
Leases
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
Non-accrual loans and leases	0	0
Current loans	0	0
Total loans and leases	0	0
Leases | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,943	2,192
Non-accrual loans and leases	2,600	2,193
Current loans	442,606	446,490
Total loans and leases	447,149	450,875
Consumer | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
Non-accrual loans and leases	137	194
Current loans	285,448	255,786
Total loans and leases	285,585	255,980
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	226	2,816
Non-accrual loans and leases	8,868	8,368
Current loans	815,158	707,900
Total loans and leases	824,252	719,084
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,980	2,668
Non-accrual loans and leases	5,678	6,340
Current loans	692,676	668,712
Total loans and leases	700,599	678,027
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	265	307
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	7,686	3,588
Non-accrual loans and leases	6,186	8,822
Current loans	806,746	783,948
Total loans and leases	820,618	796,358
Residential Real Estate Portfolio Segment | Residential Mortgage | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
Non-accrual loans and leases	202	418
Current loans	142,508	128,863
Total loans and leases	142,710	129,281
Residential Real Estate Portfolio Segment | Residential Construction | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans aquired with deteriorated credit quality	0	0
31-60 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	7,277	6,798
31-60 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	569	119
31-60 days | Leases
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
31-60 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,010	1,642
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	226	616
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	573	1,819
31-60 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,899	2,602
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	5,983	4,989
61-90 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	858	404
61-90 days | Leases
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
61-90 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	931	550
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	2,200
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,407	849
61-90 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	2,787	986
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	2	0
> 90 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Leases
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	2	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	0	0
> 90 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 0	$ 0