Note 2 - Ownership Interests and Advances - Schedule of Carrying Value of Ownership Interests (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Equity Method Companies	$ 21,208	$ 27,821
Ownership interests	4,549	0
Other Method, fair value measurement alternative	5,313	19,951
Advances to companies	0	2,626
Investments and Advances to Affiliates, Current and Noncurrent	26,521	50,398
Partnership Interest [Member]
Equity Method Companies	21,091	27,550
Ownership interests	4,549	0
Other Method, fair value measurement alternative	514	19,683
Private Equity Funds [Member]
Equity Method Companies	117	271
Other Method, fair value measurement alternative	$ 250	$ 268

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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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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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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