Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues
Investment management fees	$ 71,792	$ 57,777
Distribution and service fees	22,438	17,361
Administration and transfer agent fees	13,073	10,695
Other income and fees	568	335
Total revenues	107,871	86,168
Operating Expenses
Employment expenses	35,029	32,411
Distribution and administration expenses	27,737	21,628
Other operating expenses	10,534	8,957
Other operating expenses of consolidated sponsored investment products	331	184
Restructuring and severance	0	203
Depreciation and other amortization	657	575
Amortization expense	957	1,110
Total operating expenses	75,245	65,068
Operating Income	32,626	21,100
Other Income (Expense)
Realized and unrealized gain on investments, net	1,846	825
Realized and unrealized gain on investments of consolidated sponsored investment products, net	36	372
Other income (expense), net	151	(18)
Total other income, net	2,033	1,179
Interest Income (Expense)
Interest expense	(138)	(221)
Interest and dividend income	383	97
Interest and dividend income of investments of consolidated sponsored investment products	873	480
Total interest income, net	1,118	356
Income Before Income Taxes	35,777	22,635
Income tax expense	14,010	8,450
Net Income	21,767	14,185
Noncontrolling interests	171	(225)
Net Income Attributable to Common Stockholders	$ 21,938	$ 13,960
Earnings per share-Basic	$ 2.41	$ 1.79
Earnings per share-Diluted	$ 2.34	$ 1.73
Weighted Average Shares Outstanding-Basic (in thousands)	9,116	7,820
Weighted Average Shares Outstanding-Diluted (in thousands)	9,361	8,088