Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities:
Net income (loss)	$ 102,977	$ 80,793
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation expense, intangible asset and other amortization	51,017	48,143
Stock-based compensation	20,072	19,267
Amortization of deferred commissions	1,261	3,653
Payments of deferred commissions	(1,105)	(1,789)
Equity in earnings of equity method investments	810	(527)
Distributions from equity method investments	1,789	2,239
Right of use asset	0	3,222
Sales (purchases) of investments, net	(24,881)	(8,396)
Change in fair value of contingent consideration	(6,800)	2,900
Deferred taxes, net	2,735	(5,500)
Changes in operating assets and liabilities:
Accounts receivable, net and other assets	3,441	32,940
Accrued compensation and benefits, accounts payable, accrued liabilities and other liabilities	(38,966)	(76,639)
Operating activities of consolidated investment products ("CIP"):
Net cash provided by (used in) operating activities	229,840	154,850
Cash Flows from Investing Activities:
Capital expenditures	(6,438)	(5,495)
Acquisition of businesses, net of cash acquired of $4,395 and $8,443 for the nine months ended September 30, 2023 and 2022, respectively	(108,999)	(19,944)
Purchase of equity method investment	(11,645)	0
Net cash provided by (used in) investing activities	(127,349)	(25,747)
Cash Flows from Financing Activities:
Borrowings on credit agreement	50,000	0
Repayments on credit agreement	(32,063)	(12,062)
Common stock dividends paid	(38,385)	(35,244)
Repurchase of common shares	(25,000)	(80,000)
Payment of contingent consideration	(27,179)	(33,036)
Taxes paid related to net share settlement of restricted stock units	(13,436)	(16,450)
Affiliate equity sales (purchases)	(20,784)	(11,089)
Net contributions from (distributions to) noncontrolling interests	5,967	(1,091)
Net cash provided by (used in) financing activities	(285,769)	(318,968)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(68)	(650)
Net increase (decrease) in cash, cash equivalents and restricted cash	(183,346)	(190,515)
Cash, cash equivalents and restricted cash, beginning of period	589,179	586,145
Cash, cash equivalents and restricted cash, end of period	405,833	395,630
Non-Cash Investing Activities:
Contingent consideration	0	1,200
Non-Cash Financing Activities:
Increase (decrease) to noncontrolling interests due to consolidation (deconsolidation) of CIP, net	(7,170)	(338)
Common stock dividends payable	13,788	12,014
Reconciliation of cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at end of period	405,833	395,630
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	(2,459)	16,056
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	(2,459)	16,056
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	195,403
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	(1,769)	41,312
Operating activities of consolidated investment products ("CIP"):
Realized and unrealized (gains) losses on investments of CIP, net	(1,769)	41,312
Purchases of investments by CIP	(905,184)	(601,749)
Sales of investments by CIP	1,028,251	595,451
Net proceeds (purchases) of short-term investments and securities sold short by CIP	(168)	(655)
Change in other assets and liabilities of CIP	(1,181)	4,129
Cash Flows from Investing Activities:
Change in cash and cash equivalents of CIP due to consolidation (deconsolidation), net	(267)	(308)
Cash Flows from Financing Activities:
Payments on borrowings by CIP	(317,362)	(129,996)
Borrowings by CIP	132,473	$ 0
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	209,747
Cash pledged or on deposit of CIP	$ 683