Condensed Consolidated Statements of Financial Condition (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable, allowance for credit losses	$ 3,317	$ 1,853
Treasury Stock, Shares	5,815,973	4,929,044
Class A Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	3,000,000,000	3,000,000,000
Common Stock, Shares Issued	30,593,822	29,248,457
Common Stock, Shares Outstanding	24,777,849	24,319,413
Class B Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Shares Issued	164	159
Common Stock, Shares Outstanding	164	159