Note 3 - Other Intangible Assets - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 422
Amortization	159	$ 150
Balance	263	422
Customer Relationships [Member]
Balance	216	360
Additions	0	0
Amortization	144	144
Balance	72	216
Trade Names [Member]
Balance	206	141
Additions	0	71
Amortization	15	6
Balance	191	206
Patents [Member]
Balance	422	501
Additions	0	71
Amortization	159	150
Balance	$ 263	$ 422