Income Taxes - Narrative (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 30, 2018
Tax Credit Carryforward [Line Items]
Deferred tax assets carryforward amount											$ 1,300,000
Income tax benefit (expense)	$ 608,000	$ (184,000)	$ 695,000	$ 129,000	$ (617,000)	$ 884,000	$ 744,000	$ 718,000	$ 1,248,000	$ 1,729,000
Unrecognized tax benefits	0				0				0	0
Accrued interest and penalties	$ 0				$ 0				$ 0	0
Alternative Minimum Tax Credit
Tax Credit Carryforward [Line Items]
Income tax benefit (expense)										$ (1,300,000)
First West Virginia Bancorp | Alternative Minimum Tax Credit
Tax Credit Carryforward [Line Items]
Carryforward amount												$ 1,300,000