Note 1 - Basis of Presentation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock-based compensation expense	$ 2,971	$ 273	$ 3,296	$ 780
Share-Based Payment Arrangement, Option [Member]
Stock-based compensation expense	0	1	0	(22)
Restricted Stock [Member]
Stock-based compensation expense	2,971	211	3,217	527
Performance Shares [Member]
Stock-based compensation expense	$ 0	$ 61	$ 79	$ 275