Note 10 - Subordinated Debt (Details Textual) - USD ($)		6 Months Ended
	Apr. 01, 2019	Jun. 30, 2020	Dec. 31, 2019
Subordinated Debt, Ending Balance		$ 7,508,000	$ 7,517,000
Subordinated Borrowing, Interest Rate	6.75%
Subordinated Debt [Member]
Liabilities, Fair Value Adjustment		$ 8,000
HomeTown Bankshares Corporation [Member]
Subordinated Debt, Ending Balance	$ 7,500,000
HomeTown Bankshares Corporation [Member] | Subordinated Debt [Member]
Liabilities, Fair Value Adjustment	$ 30,000