DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value of Assets Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 65,130		$ 70,431
Other real estate owned	2,532		802
Loans held for sale	7,627		7,156
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	2,532		$ 802
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	28,832	$ 18,916
Impaired loans, adjustment	7,619	7,459
Other real estate owned		802
Other real estate owned, adjustment		118
Loans held for sale		15,503
Loans held for sale, adjustment		1,847
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 28,832	18,916
Other real estate owned		802
Loans held for sale		$ 15,503