STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating revenue
Management fee revenue, net	$ 411,139	$ 389,168	$ 1,195,262	$ 1,126,626
Service agreement revenue	7,267	7,469	21,756	22,502
Total operating revenue	418,406	396,637	1,217,018	1,149,128
Operating expenses
Commissions	232,455	223,741	676,963	641,189
Salaries and employee benefits	53,265	58,342	161,579	170,715
All other operating expenses	50,431	46,265	142,797	146,522
Total operating expenses	336,151	328,348	981,339	958,426
Net revenue from operations	82,255	68,289	235,679	190,702
Investment income
Net investment income	5,331	4,346	14,884	13,322
Net realized investment gains (losses)	718	(483)	29	(125)
Net impairment losses recognized in earnings	0	(480)	(345)	(635)
Equity in (losses) earnings of limited partnerships	(1,723)	3,837	(279)	16,902
Total investment income	4,326	7,220	14,289	29,464
Income before income taxes	86,581	75,509	249,968	220,166
Income tax expense	29,205	25,947	85,388	75,621
Net income	$ 57,376	$ 49,562	$ 164,580	$ 144,545
Class A
Net income per share
Common stock - basic (in dollars per share)	$ 1.23	$ 1.06	$ 3.53	$ 3.10
Common stock - diluted (in dollars per share)	$ 1.09	$ 0.94	$ 3.14	$ 2.75
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	46,188,980	46,189,068	46,188,971	46,189,068
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	52,411,303	52,602,083	52,442,697	52,599,783
Dividends declared per share
Common stock (in dollars per share)	$ 0.730	$ 0.681	$ 2.190	$ 2.043
Class B
Net income per share
Common stock - basic (in dollars per share)	185	160	530	466
Common stock - diluted (in dollars per share)	$ 185	$ 159	$ 529	$ 465
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	$ 328.500	$ 306.450