Note 12 - Restructuring (Details Textual) $ in Thousands			3 Months Ended	6 Months Ended	12 Months Ended
	Feb. 08, 2024	May 09, 2023	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)
Restructuring Charges				$ 693
Restructuring Reserve			$ 158	158	$ 193	$ 600
Accrued Expenses and Other Current Liabilities [Member]
Restructuring Reserve					100	500
Other Liabilities [Member]
Restructuring Reserve					100	$ 100
Employee Severance [Member]
Restructuring Charges			17	683	1,600
Restructuring Reserve			$ 157	157	$ 0
Employee Severance [Member] | Approximation [Member]
Restructuring Charges				$ 600
Employee Severance [Member] | Employees [Member]
Restructuring and Related Cost, Number of Positions Eliminated	17	50
Employee Severance [Member] | Contractors [Member]
Restructuring and Related Cost, Number of Positions Eliminated	26	15