Note 2 - Ownership Interests and Advances - Schedule of Carrying Value of Ownership Interests (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Equity Method Companies	$ 8,846	$ 21,208
Ownership interests	860	4,549
Other Method, fair value measurement alternative	2,177	5,313
Advances to companies	4,382	0
Investments and Advances to Affiliates, Current and Noncurrent	15,405	26,521
Partnership Interest [Member]
Equity Method Companies	8,749	21,091
Ownership interests	860	4,549
Other Method, fair value measurement alternative	1,067	514
Private Equity Funds [Member]
Equity Method Companies	97	117
Other Method, fair value measurement alternative	$ 250	$ 250

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Long-Term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances to clients.

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Amount of investment in equity security without readily determinable fair value.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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