Note 2 - Ownership Interests and Advances - Schedule of Carrying Value of Ownership Interests (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Equity Method Companies	$ 27,821	$ 34,542
Other Companies	19,951	27,484
Advances to companies (equity method)	2,626	15,103
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total	50,398	77,129
Partnership Interest [Member]
Equity Method Companies	27,550	34,271
Other Companies	19,683	27,031
Private Equity Funds [Member]
Equity Method Companies	271	271
Other Companies	$ 268	$ 453

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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