Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 182,812	$ 144,209	$ 158,109
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	28,278	20,983	18,359
Write-down of impaired assets	1,538	1,500	9,749
Amortization of deferred sales commissions	3,348	4,855	23,601
Share-based compensation	51,565	57,716	51,514
Investments loss (gain), net	26,449	(17,104)	(12,075)
Net purchases of trading and equity securities	(30,237)	(43,714)	(24,352)
Deferred income taxes	783	20,481	1,982
Pension and postretirement plan benefits	(15,380)	(17,714)	3,166
Net change in equity securities and trading debt securities held by consolidated sponsored funds	81,119	(101,457)	(79,065)
Other	1,158	3,276	(2,523)
Changes in assets and liabilities:
Customer and other receivables	(20,407)	(3,013)	92,565
Payable to investment companies for securities and payable to customers	76,017	(26,357)	(97,459)
Receivables from funds and separate accounts	7,552	1,517	7,218
Other assets	2,194	10,134	2,255
Accounts payable and payable to third party brokers	(18,007)	4,395	(22,948)
Other liabilities	(21,767)	(8,856)	(42,192)
Net cash provided by operating activities	357,015	50,851	87,904
Cash flows from investing activities:
Purchases of available for sale and equity method securities	(113,975)	(365,770)	(72,096)
Proceeds from sales of available for sale and equity method securities	1,157	160,158	156,965
Proceeds from maturities of available for sale securities	125,727
Additions to property and equipment	(2,566)	(6,783)	(15,691)
Net cash of sponsored funds on consolidation			6,887
Other			(194)
Net cash provided by (used in) investing activities	10,343	(212,395)	75,871
Cash flows from financing activities:
Dividends paid	(81,215)	(154,042)	(152,830)
Repurchase of common stock	(133,378)	(35,768)	(49,753)
Repayment of short-term debt, net of debt issuance costs	(94,925)
Net subscriptions, (redemptions, distributions and deconsolidations) of redeemable noncontrolling interests in sponsored funds	(2,270)	926	(3,473)
Other		174	3,145
Net cash used in financing activities	(311,788)	(188,710)	(202,911)
Net increase (decrease) in cash and cash equivalents	55,570	(350,254)	(39,136)
Cash, cash equivalents, and restricted cash at beginning of period	235,985	586,239	625,375
Cash, cash equivalents, and restricted cash at end of period	291,555	235,985	586,239
Cash paid for:
Income taxes, net	59,147	85,299	76,982
Interest	$ 7,948	$ 10,299	$ 10,289