Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES
Commissions and fees	$ 296,533	$ 261,452
Investment income	135	224
Other income, net	5,818	552
Total revenues	302,486	262,228
EXPENSES
Employee compensation and benefits	149,596	126,557
Non-cash stock-based compensation	3,747	2,773
Other operating expenses	43,400	36,076
Amortization	15,613	13,509
Depreciation	3,641	3,135
Interest	4,087	3,607
Change in estimated acquisition earn-out payables	(388)	(99)
Total expenses	219,696	185,558
Income before income taxes	82,790	76,670
Income taxes	33,357	30,377
Net income	$ 49,433	$ 46,293
Net income per share:
Basic	$ 0.34	$ 0.32
Diluted	$ 0.34	$ 0.32
Weighted average number of shares outstanding:
Basic	139,001	138,351
Diluted	141,500	140,648
Dividends declared per share	$ 0.085	$ 0.08