SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) Grade	Dec. 31, 2017 USD ($)
Cash and Cash Equivalents [Abstract]
Reserve requirements | $	$ 9.9	$ 6.7
Loans [Abstract]
Number of days past due for loan to be placed on nonaccrual status	90 days
Period of repayment performance for nonaccrual loan to be returned to accrual status, lower range limit	6 months
Period of repayment performance for nonaccrual loan to be returned to accrual status, upper range limit	1 year
Credit Risk Rating [Abstract]
Number of risk rating grades | Grade	3
Allowance for Loan Losses [Abstract]
Period of historical loss experience in determining general reserves, minimum	3 years
Period of historical loss experience in determining general reserves, maximum	5 years
Basic and Diluted Earnings Per Common Share [Abstract]
Percentage of issued shares on which small stock dividend is declared, maximum	25.00%
Statements of Cash Flows [Abstract]
Period over which federal funds are sold	1 day
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Furniture, fixtures, and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Furniture, fixtures, and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Automobiles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Automobiles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Core deposit intangibles | Straight-line basis
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	15 years
Core deposit intangibles | Accelerated basis
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years