Note 14 - Variable Interest Entities - Consolidated VIEs (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 3,641	$ 29,101
Other investments, at fair value	22,395	28,022
Investment in equity method affiliates	9,240	8,929	$ 48,238
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	58	19
Other investments, at fair value	0	0
Investment in equity method affiliates	60	23
Non-controlling interest	(37)	(15)
Investment in consolidated VIEs	$ 81	$ 27