Note 7 - Goodwill and Other Intangibles (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2015	Dec. 31, 2003
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Finite-Lived Intangible Assets, Gross, Total				$ 1,400,000
Amortization of Intangible Assets, Total	$ 147,000	$ 147,000	$ 147,000
Peoples Bancorp, Inc [Member]
Goodwill, Acquired During Period				$ 1,100,000
Hometown Bancshares Incorporated [Member]
Goodwill, Acquired During Period					$ 5,400,000