Note 11 - Investments in Equity Method Affiliates - Investments in Equity Method Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Balance	$ 14,241
Earnings / (loss) recognized	29,045	$ (395)
Balance	43,281
Insurance SPAC [Member]
Balance	5,864	5,530
Investments / advances	0	0
Distributions / repayments	0	0
Reclasses to (from)	0	0
Earnings / (loss) recognized	(116)	142
Balance	5,748	5,672
Dutch Real Estate Entities [Member]
Balance	8,377	3,399
Investments / advances	0	736
Distributions / repayments	(5)	(1)
Reclasses to (from)	0	(29)
Earnings / (loss) recognized	29,161	(537)
Balance	37,533	3,568
Other SPAC Sponsor Entities [Member]
Balance	14,241	8,929
Investments / advances	0	736
Distributions / repayments	(5)	(1)
Reclasses to (from)	0	(29)
Earnings / (loss) recognized	29,045	(395)
Balance	$ 43,281	$ 9,240