Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 39,119	$ 52,214
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation expense, intangible asset and other amortization	15,982	11,214
Stock-based compensation	9,547	7,995
Amortization of deferred commissions	1,471	569
Payments of deferred commissions	(949)	(1,253)
Equity in earnings of equity method investments	(410)	(1,028)
Sales (purchases) of investments, net	(7,917)	(25)
Deferred taxes, net	562	377
Changes in operating assets and liabilities:
Accounts receivable, net and other assets	13,841	(27,102)
Accrued compensation and benefits, accounts payable, accrued liabilities and other liabilities	(120,267)	(36,543)
Operating activities of consolidated investment products ("CIP"):
Net cash provided by (used in) operating activities	(81,775)	150,151
Cash Flows from Investing Activities:
Capital expenditures and other asset purchases	(2,510)	(2,560)
Acquisition of businesses, net of cash acquired of $8,443	(19,773)	0
Net cash provided by (used in) investing activities	(22,575)	(2,608)
Cash Flows from Financing Activities:
Payment of long-term debt	(687)	(5,913)
Common stock dividends paid	(12,663)	(7,117)
Repurchase of common shares	(30,000)	(4,999)
Stock options exercised	0	66
Payment of contingent consideration	(33,036)	0
Taxes paid related to net share settlement of restricted stock units	(13,416)	(15,163)
Net contributions from (distributions to) noncontrolling interests	(3,734)	(19,004)
Net cash provided by (used in) financing activities	(145,777)	(87,673)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(56)	0
Net increase (decrease) in cash, cash equivalents and restricted cash	(250,183)	59,870
Cash, cash equivalents and restricted cash, beginning of period	586,145	339,849
Cash, cash equivalents and restricted cash, end of period	335,962	399,719
Non-Cash Investing Activities:
Contingent consideration	1,200	137,664
Non-Cash Financing Activities:
Increase (decrease) to noncontrolling interests due to consolidation (deconsolidation) of CIP, net	(2,986)	0
Common stock dividends payable	11,259	6,219
Reconciliation of cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at end of period	335,962	399,719
Consolidated entity excluding consolidated investment products
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Realized and unrealized (gains) losses on investments, net	2,983	(889)
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	2,983	(889)
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	225,217
Consolidated Investment Products
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Realized and unrealized (gains) losses on investments, net	12,559	2,066
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	12,559	2,066
Purchases of investments by CIP	(259,071)	(250,865)
Sales of investments by CIP	209,644	377,388
Net proceeds (purchases) of short-term investments and securities sold short by CIP	(14)	16,716
Change in other assets and liabilities of CIP	1,145	(683)
Cash Flows from Investing Activities:
Change in cash and cash equivalents of CIP due to consolidation (deconsolidation), net	(292)	(48)
Cash Flows from Financing Activities:
Payments on borrowings by CIP	(52,241)	$ (35,543)
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	110,049
Cash pledged or on deposit of CIP	$ 696