Investments Of Operating Entities And Consolidated Funds - Consolidated Funds - Indirect Concentration of the Underlying Investments Held by Consolidated Funds (Details) - Equity Securities - Linkem - ITALY - Wireless Broadband - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Investment Holdings [Line Items]
Percentage of Stockholders' Equity	7.87%	8.22%
Market Value	$ 81,498	$ 83,537