Note 14 - Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 4,068,000		$ 4,068,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years
Salaries, Wages, and Benefits [Member]
Share-Based Payment Arrangement, Expense	$ 708,000	$ 639,000	$ 2,119,000	$ 1,980,000