INCOME TAXES - Additional information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 916	$ 1,323
Tax cut and jobs act
New US federal coproate tax rate, after Tax Cuts and Jobs Act			0.21
Income tax expense at federal statutory rate	21.00%	21.00%	35.00%
Provisional amount to deferred tax expense			$ 5,500
Reclassification of the tax effects from OCI to retained earnings		$ 1,500
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 10,600
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2032
WashingtonFirst Bankshares Inc [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 700
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2029