Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities
Net Income Including the Noncontrolling Interests in Subsidiaries	$ 63,265	$ 54,611
Adjustments to Reconcile Net Income to Net Cash Provided (Used) by Operating Activities
Amortization of Deferred Sales Commissions	408	592
Depreciation and Other Amortization	6,907	7,221
Share-Based Compensation Expense	7,467	7,110
Subsidiary Share-Based Compensation Expense	2,153	2,126
(Gain) Loss on Disposal of Assets	100	492
Provision (Benefit) for Deferred Income Taxes	2,746	4,696
Net Unrealized (Gain) Loss on Investments	15,748	(2,162)
Net Sales (Purchases) of Investments—Consolidated Investment Companies	3,492	8,136
Other Changes in Assets and Liabilities:
(Increase) Decrease in Receivables, net	8,687	(575)
(Increase) Decrease in Prepaid Expenses and Other Assets	(10,369)	567
Increase (Decrease) in Accounts Payable and Accrued Expenses	(81,461)	(72,337)
Increase (Decrease) in Other Liabilities	10,108	6,282
Net Cash Provided (Used) by Operating Activities	29,251	16,759
Investing Activities
Purchases of Investments—Affiliates and Other	(4,048)	(1,566)
Cash Paid for Business Acquisitions, Net of Cash Acquired	(4,744)	0
Proceeds from Redemptions of Investments—Affiliates and Other	2,192	1,185
Cash Paid for Property and Equipment	(1,557)	(5,060)
Net Cash Provided (Used) by Investing Activities	(8,157)	(5,441)
Financing Activities
Dividends Paid	(27,304)	(27,217)
Purchases of Treasury Stock	(15,000)	(1,485)
Distributions to Noncontrolling Interest in Subsidiaries	(6,039)	(2,260)
Contributions from Noncontrolling Interest in Subsidiaries	5,577	42
Proceeds from New Borrowings	100,000	8,800
Payments on Debt	(5,000)	(13,800)
Other Financing Activities	(1,834)	0
Net Cash Provided (Used) by Financing Activities	50,400	(35,920)
Effect of Exchange Rates on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(6,486)	2,264
Net Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	65,008	(22,338)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	249,511	157,426
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	314,519	135,088
Less: Restricted Cash Recorded in Other Current Assets	5,863	0
Less: Restricted Cash and Restricted Cash Equivalents Recorded in Other Long-Term Assets	307	603
Cash and Cash Equivalents	$ 308,349	$ 134,485