CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio by Segment) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	$ 37,323	$ 33,583
Loans 90 days past due	311	489
Restructured loans	2,479	1,942
Total non-performing loans	40,113	36,014
Other real estate owned	1,410	1,584
Total non-performing assets	41,523	37,598
Commercial
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	8,013	7,086
Loans 90 days past due	0	49
Restructured loans	273	500
Total non-performing loans	8,286	7,635
Other real estate owned	39	39
Total non-performing assets	8,325	7,674
Consumer
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	4,081	4,107
Loans 90 days past due	0	219
Restructured loans	0	0
Total non-performing loans	4,081	4,326
Other real estate owned	0	0
Total non-performing assets	4,081	4,326
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	3,306	3,306
Loans 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	3,306	3,306
Other real estate owned	315	315
Total non-performing assets	3,621	3,621
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	6,071	5,355
Loans 90 days past due	0	0
Restructured loans	774	0
Total non-performing loans	6,845	5,355
Other real estate owned	409	409
Total non-performing assets	7,254	5,764
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	5,992	4,234
Loans 90 days past due	90	0
Restructured loans	0	0
Total non-performing loans	6,082	4,234
Other real estate owned	0	0
Total non-performing assets	6,082	4,234
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	9,704	9,336
Loans 90 days past due	221	221
Restructured loans	1,432	1,442
Total non-performing loans	11,357	10,999
Other real estate owned	647	821
Total non-performing assets	12,004	11,820
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	156	159
Loans 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	156	159
Other real estate owned	0	0
Total non-performing assets	$ 156	$ 159