Note 10 - Fortress Preferred Equity Investment - Summary of preferred equity investment activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Conversion of Stock [Line Items]
Beginning balance	$ 87,288
Ending balance	98,356	$ 87,288
Fortress Preferred Equity Investment [Member]
Conversion of Stock [Line Items]
Beginning balance	87,288	73,697
Preferred equity return	12,643	14,641
Preferred equity payment	(4,786)	(4,297)
Preferred equity accretion	5,061	3,247
Ending balance	98,356	$ 87,288
Fortress Preferred Equity Investment [Member] | Financing Costs [Member]
Conversion of Stock [Line Items]
Preferred equity investment activity changes	$ (1,850)