Note 2 - Ownership Interests In and Advances to Partner Companies - Carrying Value of Ownership Interests (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Equity Method Companies	$ 29,560	$ 34,542
Other Companies	23,917	27,484
Advances to companies	13,321	15,103
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total	66,798	77,129
Partnership Interest [Member]
Equity Method Companies	29,289	34,271
Other Companies	23,464	27,031
Private Equity Funds [Member]
Equity Method Companies	271	271
Other Companies	$ 453	$ 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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