INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Components of the provision (benefit) for income taxes [Abstract]
Current		$ 7,809	$ 6,993	$ 6,282
Write-off of deferred tax asset related to 2017 Tax Cuts and Jobs Act		145	0	0
Deferred		637	(223)	621
Change in valuation allowance		16	0	0
Provision for income taxes		8,607	6,770	6,903
Deferred tax assets [Abstract]
Allowance for loan losses		2,630	3,563
Purchase accounting adjustments		137	312
Net operating loss carryforward		360	513
Alternative minimum tax credit carryforward		321	517
Write-downs of other real estate owned		377	1,214
Taxable income on non-accrual loans		842	1,727
Accrued expenses		187	153
Unrealized loss on investment securities		551	1,035
Other		24	38
Total deferred tax assets		5,429	9,072
Deferred tax liabilities [Abstract]
Amortization of intangibles		(3,043)	(4,780)
Depreciation		(884)	(1,442)
Federal Home Loan Bank dividends		(224)	(355)
Deferred loan fees		(515)	(774)
Other		(102)	(161)
Total deferred tax liabilities		(4,768)	(7,512)
Valuation allowance on deferred tax assets		(176)	(160)
Net deferred taxes		485	1,400
Analysis of the Differences Between the Effective Tax Rates and the Statutory U.S. Federal Income Tax Rate [Abstract]
U.S. federal income tax rate		8,200	6,630	6,579
Changes from the statutory rate [Abstract]
Impact of graduated federal tax rate		0	0	169
Change in deferred taxes related to decrease in future federal tax rate		145	0	0
State income taxes, net		503	355	308
Tax-exempt interest income		(239)	(254)	(182)
Non-deductible interest expense related to carrying tax-exempt interest earning assets		13	15	11
Deductible stock compensation expense, net		(35)	26	34
Tax credits, net		(42)	(42)	(44)
Change in valuation allowance		16	0	0
Other		46	40	28
Provision for income taxes		$ 8,607	$ 6,770	$ 6,903
Analysis of the Differences Between the Effective Tax Rate and the U.S. Federal Income Tax Rate [Abstract]
U.S. federal income tax rate		35.00%	35.00%	34.00%
Changes from the statutory rate [Abstract]
Impact of graduated federal tax rate		0.00%	0.00%	0.90%
Change in deferred taxes related to decrease in future federal tax rate		0.60%	0.00%	0.00%
State income taxes, net		2.10%	1.90%	1.60%
Tax-exempt interest income		(1.00%)	(1.40%)	(0.90%)
Non-deductible interest expense related to carrying tax-exempt interest earning assets		0.10%	0.10%	0.10%
Deductible stock compensation expense, net		(0.20%)	0.10%	0.10%
Tax credits, net		(0.20%)	(0.20%)	(0.20%)
Change in valuation allowance		0.10%	0.00%	0.00%
Other		0.20%	0.20%	0.10%
Provision for income taxes		36.70%	35.70%	35.70%
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Income tax penalties expense		$ 0	$ 0	$ 0
Interest on income taxes expense		0	0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Income tax penalties accrued		0	0	0
Interest on income taxes accrued		0	0	$ 0
Plan [Member]
Analysis of the Differences Between the Effective Tax Rate and the U.S. Federal Income Tax Rate [Abstract]
U.S. federal income tax rate	21.00%
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 875
Expiration dates		Dec. 31, 2022
Various States [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 2,425
Expiration dates		Dec. 31, 2022
District of Columbia [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance for net operating loss carryforwards not expected to be utilized before expiration		$ 176	$ 160