CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
REVENUES
Commissions and fees	$ 671,396	$ 617,363	$ 1,966,056	$ 1,807,758
Investment income	349	1,668	1,844	4,274
Other income, net	2,217	(348)	3,364	1,150
Total revenues	673,962	618,683	1,971,264	1,813,182
EXPENSES
Employee compensation and benefits	362,767	331,120	1,058,907	973,567
Other operating expenses	91,403	96,409	274,103	283,242
(Gain)/loss on disposal	(994)	(3,815)	(1,285)	(4,326)
Amortization	27,059	26,272	80,190	78,418
Depreciation	6,647	5,815	18,836	17,516
Interest	13,234	16,314	42,334	47,805
Change in estimated acquisition earn-out payables	15,318	(5,270)	4,996	(6,920)
Total expenses	515,434	466,845	1,478,081	1,389,302
Income before income taxes	158,528	151,838	493,183	423,880
Income taxes	24,549	36,332	110,020	101,885
Net income	$ 133,979	$ 115,506	$ 383,163	$ 321,995
Net income per share:
Basic (in dollars per share)	$ 0.47	$ 0.41	$ 1.35	$ 1.14
Diluted (in dollars per share)	0.47	0.41	1.35	1.14
Dividends declared per share (in dollars per share)	$ 0.085	$ 0.080	$ 0.255	$ 0.240