Note 17 - Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allocated Share-based Compensation Expense	$ 2,678	$ 2,438	$ 2,352
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	286	246	270
Restricted Stock
Allocated Share-based Compensation Expense	2,084	1,967	1,864
Employee Stock Purchase Plan
Allocated Share-based Compensation Expense	$ 308	$ 225	$ 218