CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Commissions and fees	$ 529,813	$ 474,609	$ 1,502,219	$ 1,383,899
Investment income	719	491	2,051	1,085
Other income, net	318	546	1,228	22,047
Total revenues	530,850	475,646	1,505,498	1,407,031
EXPENSES
Employee compensation and benefits	268,045	246,062	790,902	736,445
Other operating expenses	83,697	72,058	243,704	210,289
(Gain)/loss on disposal	1,106	(1,902)	(1,544)	(1,993)
Amortization	21,637	21,435	62,961	64,402
Depreciation	5,259	5,489	16,410	17,242
Interest	8,963	9,393	28,686	28,949
Change in estimated acquisition earn-out payables	(357)	(1,308)	2,528	8,309
Total expenses	388,350	351,227	1,143,647	1,063,643
Income before income taxes	142,500	124,419	361,851	343,388
Income taxes	36,447	48,506	91,048	131,263
Net income	$ 106,053	$ 75,913	$ 270,803	$ 212,125
Net income per share:
Basic (in dollars per share)	$ 0.38	$ 0.27	$ 0.98	$ 0.76
Diluted (in dollars per share)	0.38	0.27	0.96	0.74
Dividends declared per share (in dollars per share)	$ 0.075	$ 0.068	$ 0.225	$ 0.203