Note 14 - Equity Incentive Plan - Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Outstanding, shares (in shares)	412,658
Outstanding, weighted average grant date fair value (in dollars per share)	$ 36.33
Granted (in shares)	507,524
Granted, weighted average grant date fair value (in dollars per share)	$ 25.14	$ 35.88	$ 38.20
Vested, shares (in shares)	(164,167)
Vested, weighted average grant date fair value (in dollars per share)	$ 36.77
Forfeited and cancelled, shares (in shares)	(80,610)
Forfeited and cancelled, weighted average grant date fair value (in dollars per share)	$ (31.40)
Outstanding, shares (in shares)	675,405	412,658
Outstanding, weighted average grant date fair value (in dollars per share)	$ 28.40	$ 36.33