SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)	9 Months Ended
Sep. 30, 2016 USD ($) loan_production_office banking_office shares	Dec. 31, 2015 USD ($)
Accounting Policies [Abstract]
Number of banking offices \| banking_office	39
Number of loan production offices \| loan_production_office	64
Net deferred tax asset	$ 408,000	$ 11,341,000
Valuation allowance	$ 0	$ 0
Shares excluded from computation of earnings per share (in shares) \| shares	2,500,000

Number of offices included in Nature of Operations disclosure.

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Number of loan production offices included in Nature of Operations disclosure.

+ References

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Stock Employee Compensation Trust, Securities Excluded from Computation of Earnings Per Share

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- References

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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