CREDIT QUALITY ASSESSMENT (Recorded Investment with Respect to Impaired loans, Associated Allowance by Applicable Portfolio Segment and Principal Balance of Impaired Loans prior to Amounts Charged-off) (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	$ 14,486	$ 14,208
Impaired loans without a specific allowance	14,988	14,719
Impaired loans	29,474	28,927
Impaired Financing Receivable, Related Allowance	3,208	3,375
Unpaid principal balance in total impaired loans	44,020	42,461
Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	12,810	12,536
Impaired loans without a specific allowance	5,116	5,035
Impaired loans	17,926	17,571
Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	864	876
Impaired loans without a specific allowance	3,852	3,591
Impaired loans	4,716	4,467
Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	812	796
Impaired loans without a specific allowance	6,020	6,093
Impaired loans	6,832	6,889
Commercial
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	2,254	2,200
Impaired loans without a specific allowance	2,824	3,073
Impaired loans	5,078	5,273
Impaired Financing Receivable, Related Allowance	1,354	1,318
Unpaid principal balance in total impaired loans	7,371	7,158
Commercial | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	1,217	1,168
Impaired loans without a specific allowance	966	974
Impaired loans	2,183	2,142
Commercial | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	864	876
Impaired loans without a specific allowance	473	701
Impaired loans	1,337	1,577
Commercial | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	173	156
Impaired loans without a specific allowance	1,385	1,398
Impaired loans	1,558	1,554
All Other
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	6,409	6,439
Impaired loans	6,409	6,439
Impaired Financing Receivable, Related Allowance	0	0
Unpaid principal balance in total impaired loans	7,710	7,154
All Other | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	2,750	2,750
Impaired loans	2,750	2,750
All Other | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	573	577
Impaired loans	573	577
All Other | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	3,086	3,112
Impaired loans	3,086	3,112
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	10	58
Impaired loans without a specific allowance	137	136
Impaired loans	147	194
Impaired Financing Receivable, Related Allowance	9	58
Unpaid principal balance in total impaired loans	4,407	4,456
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	10	58
Impaired loans without a specific allowance	0	0
Impaired loans	10	58
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	137	136
Impaired loans	137	136
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	7,318	7,791
Impaired loans without a specific allowance	2,625	2,650
Impaired loans	9,943	10,441
Impaired Financing Receivable, Related Allowance	1,194	1,489
Unpaid principal balance in total impaired loans	14,603	15,138
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	7,318	7,791
Impaired loans without a specific allowance	513	518
Impaired loans	7,831	8,309
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	2,058	2,073
Impaired loans	2,058	2,073
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	54	59
Impaired loans	54	59
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	4,904	4,159
Impaired loans without a specific allowance	2,993	2,421
Impaired loans	7,897	6,580
Impaired Financing Receivable, Related Allowance	651	510
Unpaid principal balance in total impaired loans	9,929	8,555
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	4,265	3,519
Impaired loans without a specific allowance	887	793
Impaired loans	5,152	4,312
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	748	240
Impaired loans	748	240
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	639	640
Impaired loans without a specific allowance	1,358	1,388
Impaired loans	$ 1,997	$ 2,028