Note 14 - Equity Incentive Plan - Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Outstanding, shares (in shares) | shares	233,239
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 37.50
Granted (in shares) | shares	328,257
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 35.88
Vested, shares (in shares) | shares	(91,680)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 37.94
Forfeited and cancelled, shares (in shares) | shares	(57,158)
Forfeited and cancelled, weighted average grant date fair value (in dollars per share) | $ / shares	$ 35.94
Outstanding, shares (in shares) | shares	412,658
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 36.33