Note 11 - Employee Benefits - Option Activity (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Balance, shares (in shares) | shares	1,029,466
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 14.00
Granted, shares (in shares) | shares	141,500
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 21.05
Exercised, shares (in shares) | shares	(201,975)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 9.89
Forfeited, shares (in shares) | shares	(53,600)
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 16.61
Balance, shares (in shares) | shares	915,391
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 15.84
Exercisable, shares (in shares) | shares	371,241
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 13.38