DEPOSITS - Purchase and Assumption Agreement (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Nov. 21, 2019 bank	Dec. 31, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposits of branches held for sale | $	$ 188,270		$ 0
Berkeley County, WV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Branch locations held for sale, number | bank		3
Jefferson County, WV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Branch locations held for sale, number | bank		1
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposits of branches held for sale | $	$ 188,270