Note 8 - Employee Benefits - Restricted Stock Unit Activity (Details)	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Nonvested at December 31, 2021 (in shares) | shares	259,059
Nonvested at December 31, 2021 (in dollars per share) | $ / shares	$ 13.30
Granted, Restricted Stock Units (in shares) | shares	219,945
Granted, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 17.05
Vested, Restricted Stock Units (in shares) | shares	(151,575)
Vested, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 13.63
Nonvested at September 30, 2022, Restricted Stock Units (in shares) | shares	327,429
Nonvested at September 30, 2022, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 15.40