CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES
Commissions and fees	$ 324,150	$ 289,942	$ 657,943	$ 586,475
Investment income	239	187	425	322
Other income, net	1,403	787	2,436	6,605
Total revenues	325,792	290,916	660,804	593,402
EXPENSES
Employee compensation and benefits	163,514	150,752	323,012	300,348
Non-cash stock-based compensation	3,623	3,738	7,473	7,485
Other operating expenses	47,397	42,220	93,736	85,620
Amortization	16,121	15,881	32,282	31,494
Depreciation	4,263	3,784	8,430	7,425
Interest	3,997	4,000	7,981	8,087
Change in estimated acquisition earn-out payables	656	(604)	2,178	(992)
Total expenses	239,571	219,771	475,092	439,467
Income before income taxes	86,221	71,145	185,712	153,935
Income taxes	34,214	28,674	73,574	62,031
Net income	$ 52,007	$ 42,471	$ 112,138	$ 91,904
Net income per share:
Basic	$ 0.36	$ 0.30	$ 0.78	$ 0.64
Diluted	$ 0.36	$ 0.29	$ 0.77	$ 0.63
Weighted average number of shares outstanding:
Basic	140,836	139,086	140,816	139,044
Diluted	143,021	141,828	142,938	141,664
Dividends declared per share	$ 0.0900	$ 0.0850	$ 0.1800	$ 0.1700