CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUES
Commissions and fees	$ 472,068	$ 464,724	$ 972,406	$ 909,290
Investment income	731	351	1,332	594
Other income, net	388	1,230	910	21,501
Total revenues	473,187	466,305	974,648	931,385
EXPENSES
Employee compensation and benefits	251,958	244,517	522,857	490,383
Other operating expenses	83,694	71,312	160,007	138,231
(Gain)/loss on disposal	(230)	9	(2,650)	(91)
Amortization	20,785	21,347	41,324	42,967
Depreciation	5,599	5,655	11,151	11,753
Interest	10,052	9,874	19,723	19,556
Change in estimated acquisition earn-out payables	419	5,589	2,885	9,617
Total expenses	372,277	358,303	755,297	712,416
Income before income taxes	100,910	108,002	219,351	218,969
Income taxes	26,988	41,900	54,601	82,757
Net income	$ 73,922	$ 66,102	$ 164,750	$ 136,212
Net income per share:
Basic (in dollars per share)	$ 0.27	$ 0.24	$ 0.60	$ 0.49
Diluted (in dollars per share)	0.26	0.23	0.58	0.48
Dividends declared per share (in dollars per share)	$ 0.075	$ 0.068	$ 0.150	$ 0.135