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SECURITIES AVAILABLE FOR SALE - Additional Information (Detail) $ in Thousands	Mar. 31, 2017 USD ($) security	Dec. 31, 2016 USD ($) security
Schedule of Available-for-sale Securities [Line Items]
Securities held	32	46
Fair value of securities pledged to secure public funds and other purposes | $	$ 311,103	$ 317,282
U.S Agencies and Government Sponsored Enterprises (GSE)
Schedule of Available-for-sale Securities [Line Items]
Securities held	10	17
Securities held, less than 12 months category	8	14
Securities held, more than 12 months category	2	3
State and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Securities held	20	26
Securities held, less than 12 months category	19	25
Securities held, more than 12 months category	1	1
Private Label
Schedule of Available-for-sale Securities [Line Items]
Securities held, less than 12 months category	2	3

X

- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

No definition available.

+ Details

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- Definition

The fair value of available-for-sale securities that serve as collateral for borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5086-111524

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563

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- Definition

Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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