STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating revenue
Management fee revenue, net	$ 416,665	$ 394,224	$ 784,123	$ 737,458
Service agreement revenue	7,219	7,436	14,489	15,033
Total operating revenue	423,884	401,660	798,612	752,491
Operating expenses
Commissions	235,794	223,731	444,508	417,448
Salaries and employee benefits	55,025	57,354	108,314	112,373
All other operating expenses	47,306	50,592	92,366	100,257
Total operating expenses	338,125	331,677	645,188	630,078
Net revenue from operations	85,759	69,983	153,424	122,413
Investment income
Net investment income	4,891	4,435	9,553	8,976
Net realized investment gains (losses)	399	598	(689)	358
Net impairment losses recognized in earnings	0	(35)	(345)	(155)
Equity in earnings of limited partnerships	2,114	10,707	1,444	13,065
Total investment income	7,404	15,705	9,963	22,244
Income before income taxes	93,163	85,688	163,387	144,657
Income tax expense	31,854	29,538	56,183	49,674
Net income	$ 61,309	$ 56,150	$ 107,204	$ 94,983
Class A
Net income per share
Common stock - basic (in dollars per share)	$ 1.32	$ 1.21	$ 2.30	$ 2.04
Common stock - diluted (in dollars per share)	$ 1.17	$ 1.07	$ 2.04	$ 1.81
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	46,188,867	46,189,068	46,188,967	46,189,068
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	52,392,862	52,562,514	52,458,394	52,598,633
Dividends declared per share
Common stock (in dollars per share)	$ 0.730	$ 0.681	$ 1.460	$ 1.362
Class B
Net income per share
Common stock - basic (in dollars per share)	197	181	345	306
Common stock - diluted (in dollars per share)	$ 197	$ 180	$ 345	$ 305
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	2,542	2,542	2,542	2,542
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	2,542	2,542	2,542	2,542
Dividends declared per share
Common stock (in dollars per share)	$ 109.500	$ 102.150	$ 219.000	$ 204.300