Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Asset management, administration and distribution fees	$ 299,890	$ 271,930	$ 866,945	$ 785,642
Information processing and software servicing fees	80,922	76,443	233,501	224,834
Transaction-based and trade execution fees	5,206	6,268	17,887	22,259
Total revenues	386,018	354,641	1,118,333	1,032,735
Expenses:
Subadvisory, distribution and other asset management costs	45,578	42,586	131,368	122,651
Software royalties and other information processing costs	7,463	7,519	22,837	22,944
Brokerage commissions	3,978	4,864	13,163	17,065
Compensation, benefits and other personnel	118,421	103,137	336,919	307,350
Stock-based compensation	7,088	4,066	19,527	12,044
Consulting, outsourcing and professional fees	46,507	43,631	137,991	121,712
Data processing and computer related	18,449	16,581	53,104	48,081
Facilities, supplies and other costs	18,604	17,075	54,764	50,194
Amortization	13,745	11,388	38,332	33,684
Depreciation	6,948	6,576	20,347	19,457
Total expenses	286,781	257,423	828,352	755,182
Income from operations	99,237	97,218	289,981	277,553
Net gain from investments	645	196	1,036	320
Interest and dividend income	1,899	1,026	4,928	3,142
Interest expense	(345)	(115)	(571)	(416)
Equity in earnings of unconsolidated affiliate	39,333	32,565	109,213	92,042
Gain on sale of subsidiary	0	0	0	2,791
Income before income taxes	140,769	130,890	404,587	375,432
Income taxes	39,030	44,186	122,342	130,226
Net income	$ 101,739	$ 86,704	$ 282,245	$ 245,206
Basic earnings per common share	$ 0.64	$ 0.54	$ 1.78	$ 1.51
Shares used to compute basic earnings per share	157,902	160,916	158,439	161,908
Diluted earnings per common share	$ 0.63	$ 0.53	$ 1.74	$ 1.49
Shares used to compute diluted earnings per share	161,148	163,925	161,866	165,053
Dividends declared per common share	$ 0	$ 0	$ 0.28	$ 0.26