INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of the provision (benefit) for income taxes [Abstract]
Current	$ 6,476	$ 5,782	$ 7,809
Write-off of deferred tax asset related to 2017 Tax Cuts and Jobs Act	0	0	145
Deferred	563	120	637
Change in valuation allowance	(14)	(4)	16
Provision for income taxes	7,025	5,898	8,607
Deferred tax assets [Abstract]
Allowance for loan losses	2,969	2,884
Purchase accounting adjustments	605	963
Net operating loss carryforward	453	333
Alternative minimum tax credit carryforward	3	125
Write-downs of other real estate owned	374	235
Taxable income on non-accrual loans	981	896
Accrued expenses	278	235
Unrealized loss on investment securities	0	1,024
Other	16	15
Total deferred tax assets	5,679	6,710
Deferred tax liabilities [Abstract]
Amortization of intangibles	(3,072)	(3,063)
Depreciation	(1,320)	(1,106)
Federal Home Loan Bank dividends	(267)	(224)
Deferred loan fees	(588)	(499)
Unrealized gain on investment securities	(984)	0
Other	(101)	(105)
Total deferred tax liabilities	(6,332)	(4,997)
Valuation allowance on deferred tax assets	(158)	(172)
Net deferred taxes		1,541
Net deferred taxes	(811)
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	6,556	5,474	8,200
Change in deferred taxes related to decrease in future federal tax rate	0	0	145
State income taxes, net	693	518	503
Tax-exempt interest income	(163)	(143)	(239)
Non-deductible interest expense related to carrying tax-exempt interest earning assets	15	11	13
Non-deductible stock compensation expense, net	28	12	(35)
Tax credits, net	(134)	(71)	(42)
Change in valuation allowance	14	4	16
Other	16	93	46
Provision for income taxes	$ 7,025	$ 5,898	$ 8,607
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%	21.00%	35.00%
Changes from the statutory rate [Abstract]
Change in deferred taxes related to decrease in future federal tax rate	0.000	0.000	0.006
State income taxes, net	2.20%	2.00%	2.10%
Tax-exempt interest income	(0.50%)	(0.50%)	(1.00%)
Non-deductible interest expense related to carrying tax-exempt interest earning assets	0.00%	0.00%	0.10%
Non-deductible stock compensation expense, net	0.10%	0.00%	(0.20%)
Tax credits, net	(0.40%)	(0.30%)	(0.20%)
Change in valuation allowance	0.00%	0.00%	0.10%
Other	0.10%	0.40%	0.20%
Provision for income taxes	22.50%	22.60%	36.70%
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
Federal [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards	$ 1,407
Expiration dates	Dec. 31, 2022
Various States [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards	$ 2,425
Expiration dates	Dec. 31, 2022
District of Columbia [Member]
Operating Loss Carryforwards [Abstract]
Valuation allowance for net operating loss carryforwards not expected to be utilized before expiration	$ 158	$ 172