Note 16 - Stock Based Compensation - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Outstanding Options, at Beginning of Period (in shares)	385,300	725,300	780,080
Outstanding Options, at Beginning of Period, weighted average exercise price (in dollars per share)	$ 14.67	$ 12.55	$ 12.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Granted, weighted average exercise price (in dollars per share)	$ 0	$ 0	$ 0
Exercised (in shares)	(261,753)	(330,000)	(54,780)
Exercised, weighted average exercise price (in dollars per share)	$ 13.62	$ 10.00	$ 15.28
Forfeited or Expired (in shares)	(10,000)	(10,000)	0
Forfeited or Expired, weighted average exercise price (in dollars per share)	$ 15.00	$ 15.00	$ 0
Outstanding Options, at End of Period (in shares)	113,547	385,300	725,300
Outstanding Options, at End of Period, weighted average exercise price (in dollars per share)	$ 17.06	$ 14.67	$ 12.55
Exercisable, at End of Period (in shares)	113,547	385,300	724,300
Exercisable, at End of Period, weighted average exercise price (in dollars per share)	$ 17.06	$ 14.67	$ 12.55