CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES
Commissions and fees	$ 358,196	$ 302,310	$ 1,016,139	$ 888,785
Investment income	85	239	510	561
Other income, net	1,029	1,251	3,465	7,856
Total revenues	359,310	303,800	1,020,114	897,202
EXPENSES
Employee compensation and benefits	180,528	149,691	503,540	450,039
Non-cash stock-based compensation	7,431	3,908	14,904	11,393
Other operating expenses	50,102	43,774	143,838	129,394
Amortization	17,858	15,956	50,140	47,450
Depreciation	4,466	3,958	12,896	11,383
Interest	4,135	4,006	12,116	12,093
Change in estimated acquisition earn-out payables	(665)	858	1,513	(134)
Total expenses	263,855	222,151	738,947	661,618
Income before income taxes	95,455	81,649	281,167	235,584
Income taxes	37,706	32,145	111,280	94,176
Net income	$ 57,749	$ 49,504	$ 169,887	$ 141,408
Net income per share:
Basic	$ 0.40	$ 0.34	$ 1.18	$ 0.99
Diluted	$ 0.39	$ 0.34	$ 1.16	$ 0.97
Weighted average number of shares outstanding:
Basic	141,139	139,465	140,925	139,185
Diluted	142,789	142,097	142,476	141,769
Dividends declared per share	$ 0.0900	$ 0.0850	$ 0.2700	$ 0.2550