Note 14 - Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 3,846,000		$ 3,846,000
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	$ 638,000	$ 726,000	$ 1,980,000	$ 1,905,000