Note 11 - Equity Incentive Plan - Stock Options (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Outstanding, shares (in shares) | shares	1,530,703
Outstanding, Weighted Average Exercise (in dollars per share) | $ / shares	$ 34.93
Granted, shares (in shares) | shares	402,403
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 28.63
Exercised, shares (in shares) | shares	(2,034)
Exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 18.3
Exercised, Aggregate Intrinsic Value | $	$ 20
Forfeited and canceled, shares (in shares) | shares	(100,628)
Forfeited and canceled, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 36.4
Outstanding, shares (in shares) | shares	1,830,444
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 33.84
Outstanding, Weighted Average Remaining Contractual Term (Year)	7 years 9 months 18 days
Outstanding, Aggregate Intrinsic Value | $	$ 10
Vested, shares (in shares) | shares	975,230
Vested, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 36.7
Vested, Weighted Average Remaining Contractual Term (Year)	6 years 10 months 24 days
Vested, Aggregate Intrinsic Value | $	$ 0
Vested and expected to vest, shares (in shares) | shares	1,830,444
Vested and expected to vest, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 33.84
Vested and expected to vest, Weighted Average Remaining Contractual Term (Year)	7 years 9 months 18 days
Vested and expected to vest, Aggregate Intrinsic Value | $	$ 10