Note 5 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 120	$ 120
Intangible assets, gross	10,882	10,882
Accumulated amortization	(10,762)	(10,762)
Intangible assets, net	120	120
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	4,739	4,739
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 6,023	$ 6,023