Note 16 - Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allocated Share-based Compensation Expense	$ 2,438	$ 2,352	$ 2,150
Employee Stock Option
Allocated Share-based Compensation Expense	246	270	297
Restricted Stock
Allocated Share-based Compensation Expense	1,967	1,864	1,619
Employee Stock Purchase Plan
Allocated Share-based Compensation Expense	$ 225	$ 218	$ 234