Note 13 - Stock Based Compensation - Nonvested Restricted Stock Activity (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Nonvested, shares (in shares) | shares	58,461
Nonvested, weighted average grant date value per share (in dollars per share) | $ / shares	$ 31.71
Granted, shares (in shares) | shares	33,363
Granted, weighted average grant date value per share (in dollars per share) | $ / shares	$ 35.18
Vested, shares (in shares) | shares	(18,370)
Vested, weighted average grant date value per share (in dollars per share) | $ / shares	$ 31.23
Forfeited, shares (in shares) | shares	(1,747)
Forfeited, weighted average grant date value per share (in dollars per share) | $ / shares	$ 34.12
Nonvested, shares (in shares) | shares	71,707
Nonvested, weighted average grant date value per share (in dollars per share) | $ / shares	$ 33.39