Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 53,378	$ 128,311
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation expense, intangible asset and other amortization	32,223	23,196
Stock-based compensation	14,119	15,844
Amortization of deferred commissions	2,700	1,462
Payments of deferred commissions	(1,962)	(3,241)
Equity in earnings of equity method investments	(977)	(2,561)
Distributions from equity method investments	2,102	1,908
Sales (purchases) of investments, net	(9,952)	(3,395)
Change in fair value of contingent consideration	2,900	0
Deferred taxes, net	(2,271)	(1,518)
Changes in operating assets and liabilities:
Accounts receivable, net and other assets	31,069	(43,203)
Accrued compensation and benefits, accounts payable, accrued liabilities and other liabilities	(110,581)	(12,651)
Operating activities of consolidated investment products ("CIP"):
Net cash provided by (used in) operating activities	37,611	239,180
Cash Flows from Investing Activities:
Capital expenditures and other asset purchases	(4,361)	(4,336)
Acquisition of businesses, net of cash acquired of $8,443	(19,773)	0
Net cash provided by (used in) investing activities	(24,442)	(5,527)
Cash Flows from Financing Activities:
Payment of long-term debt	(11,375)	(11,826)
Common stock dividends paid	(24,190)	(13,748)
Repurchase of common shares	(70,000)	(12,499)
Payment of contingent consideration	(33,036)	0
Taxes paid related to net share settlement of restricted stock units	(15,284)	(19,214)
Net contributions from (distributions to) noncontrolling interests	(3,598)	(6,636)
Net cash provided by (used in) financing activities	(240,177)	(167,645)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(306)	0
Net increase (decrease) in cash, cash equivalents and restricted cash	(227,314)	66,008
Cash, cash equivalents and restricted cash, beginning of period	586,145	339,849
Cash, cash equivalents and restricted cash, end of period	358,831	405,857
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	(338)	(8,001)
Common stock dividends payable	11,229	6,277
Reconciliation of cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at end of period	358,831	405,857
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	13,562	(3,381)
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	13,562	(3,381)
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	250,530
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	33,715	(1,961)
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	33,715	(1,961)
Purchases of investments by CIP	(441,042)	(664,837)
Sales of investments by CIP	417,706	790,575
Net proceeds (purchases) of short-term investments and securities sold short by CIP	(45)	15,103
Change in other assets and liabilities of CIP	967	(471)
Cash Flows from Investing Activities:
Change in cash and cash equivalents of CIP due to consolidation (deconsolidation), net	(308)	(1,191)
Cash Flows from Financing Activities:
Payments on borrowings by CIP	(82,694)	$ (103,722)
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	107,674
Cash pledged or on deposit of CIP	$ 627