CREDIT QUALITY ASSESSMENT (Impaired Loans by Portfolio) (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	$ 26,382	$ 29,828	$ 34,331
Contractual interest income due on impaired loans during the period	2,082	2,527	2,339
Interest income on impaired loans recognized on a cash basis	511	961	773
Interest income on impaired loans recognized on an accrual basis	186	274	$ 280
Commercial
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	5,646	4,714
Contractual interest income due on impaired loans during the period	570	450
Interest income on impaired loans recognized on a cash basis	153	273
Interest income on impaired loans recognized on an accrual basis	107	113
All Other
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	4,545	4,869
Contractual interest income due on impaired loans during the period	190	208
Interest income on impaired loans recognized on a cash basis	49	104
Interest income on impaired loans recognized on an accrual basis	42	43
Commercial Real Estate Portfolio Segment \| Commercial Acquisition, Development and Construction
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	150	882
Contractual interest income due on impaired loans during the period	294	304
Interest income on impaired loans recognized on a cash basis	0	11
Interest income on impaired loans recognized on an accrual basis	0	0
Commercial Real Estate Portfolio Segment \| Commercial Investor Real Estate
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	9,480	11,145
Contractual interest income due on impaired loans during the period	718	918
Interest income on impaired loans recognized on a cash basis	43	226
Interest income on impaired loans recognized on an accrual basis	0	107
Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied Real Estate
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	6,561	8,218
Contractual interest income due on impaired loans during the period	310	647
Interest income on impaired loans recognized on a cash basis	266	347
Interest income on impaired loans recognized on an accrual basis	$ 37	$ 11

Loans and Leases Receivable, Impaired, Contractual Interest Income

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- Definition

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+ References

No definition available.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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+ References

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