Note 13 - Stock-based Compensation - Schedule of Stock Option Awards (Details) - The 2018 Equity Incentive Plan [Member]	9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares		Dec. 31, 2022 USD ($) $ / shares shares
Outstanding, options (in shares)	647,832
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 26.67
Outstanding, Weighted Average Remaining Contractual Term (Year)	6 years 7 months 9 days		6 years 10 months 2 days
Outstanding, Intrinsic Value | $	$ 2,073,328		$ 4,627,255
Granted, options (in shares)	103,000
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 30.73
Granted, Intrinsic Value | $	$ 0
Less exercised, options (in shares)	19,121
Less exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 12.76
Less exercised, Intrinsic Value | $	$ 337,279
Less forfeited or expired, options (in shares)	35,119
Less forfeited or expired, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 33.25
Less forfeited or expired, Intrinsic Value | $	$ 0
Outstanding, options (in shares)	696,592		647,832
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 27.36		$ 26.67
Expected to vest, options (in shares)	682,861	[1]
Exercisable, options (in shares)	417,775
Exercisable, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 25.76
Exercisable, Weighted Average Remaining Contractual Term (Year)	5 years 3 months 29 days
Exercisable, Intrinsic Value | $	$ 1,679,133

[1] Forfeiture rate has been calculated and estimated to assume a forfeiture of 3.1% of the options over 10 years.