v2.3.0.15

Investment In Unconsolidated Affiliate (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended				1 Months Ended		1 Months Ended	9 Months Ended	12 Months Ended	1 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Mar. 31, 2010	Sep. 30, 2011	Sep. 30, 2010	Oct. 31, 2011	Dec. 31, 2010	Apr. 30, 2011 Bank of America [Member] LSV Employee Group II [Member]	Sep. 30, 2011 LSV [Member]	Oct. 31, 2011 LSV Employee Group [Member]	Sep. 30, 2011 LSV Employee Group [Member]	Dec. 31, 2006 LSV Employee Group [Member]	Apr. 30, 2011 LSV Employee Group II [Member]	Sep. 30, 2011 LSV Employee Group II [Member]	Dec. 31, 2011 LSV Employee Group II [Member]	Oct. 31, 2011 LSV Employee Group II [Member]
Equity method investment, ownership percentage									41.00%
Total investment in LSV	$ 67,994			$ 67,994			$ 64,409
Investment in LSV in excess of the underlying equity in net assets	3,826			3,826
Partnership distribution payments received from LSV			21,242	78,550	67,508
Proportionate share in the earnings of LSV	23,908	25,246		82,387	72,839
Amount financed through new term loan								3,655
Acquisition of additional partnership interest												8.00%
Final principal payment										1,298
Goodwill									3,062
Unpaid principal balance of term loan																3,197
Debt instrument, periodic payment, principal											10,091				458
Current debt obligation						0
Purchase partnership interest													$ 4,300
Maturity of term loan, years														four

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