CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUES
Commissions and fees	$ 617,363	$ 529,813	$ 1,807,758	$ 1,502,219
Investment income	1,668	719	4,274	2,051
Other income, net	(348)	318	1,150	1,228
Total revenues	618,683	530,850	1,813,182	1,505,498
EXPENSES
Employee compensation and benefits	331,120	268,045	973,567	790,902
Other operating expenses	96,409	83,697	283,242	243,704
(Gain)/loss on disposal	(3,815)	1,106	(4,326)	(1,544)
Amortization	26,272	21,637	78,418	62,961
Depreciation	5,815	5,259	17,516	16,410
Interest	16,314	8,963	47,805	28,686
Change in estimated acquisition earn-out payables	(5,270)	(357)	(6,920)	2,528
Total expenses	466,845	388,350	1,389,302	1,143,647
Income before income taxes	151,838	142,500	423,880	361,851
Income taxes	36,332	36,447	101,885	91,048
Net income	$ 115,506	$ 106,053	$ 321,995	$ 270,803
Net income per share:
Basic (in dollars per share)	$ 0.41	$ 0.38	$ 1.14	$ 0.98
Diluted (in dollars per share)	0.41	0.38	1.14	0.96
Dividends declared per share (in dollars per share)	$ 0.080	$ 0.075	$ 0.240	$ 0.225