Note 13 - Segment Reporting (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disposal Group, Operating Expense	$ 1,194	$ 0	$ 6,388	$ 0
Goodwill, Written Off			630
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] | Manufacturing Facility in Japan [Member]
Disposal Group, Operating Expense	1,200		6,400
Disposal Group, Employee Severance, Operating Expense	100		2,300
Disposal Group, Write-down of Fixed Assets, Operating Expense	$ 1,100		2,300
Disposal Group, Facility-related Charges, Operating Expense			900
Goodwill, Written Off			600
Disposal Group, Other Closure Related Charges, Operating Expense			$ 300