Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Investment management fees	$ 97,295	$ 60,398	$ 230,628	$ 176,234
Distribution and service fees	11,482	12,116	32,704	36,761
Administration and transfer agent fees	14,699	9,588	33,156	29,085
Other income and fees	199	222	1,095	624
Total revenues	123,675	82,324	297,583	242,704
Operating Expenses
Employment expenses	54,159	33,142	136,792	102,184
Distribution and other asset-based expenses	20,552	17,380	51,639	52,913
Other operating expenses	17,733	11,392	51,195	34,614
Restructuring and severance	1,584	1,879	10,478	4,270
Depreciation expense	1,038	754	2,478	2,392
Amortization expense	5,063	604	7,109	1,858
Total operating expenses	106,886	65,786	267,563	204,673
Operating Income (Loss)	16,789	16,538	30,020	38,031
Other Income (Expense)
Other income (expense), net	436	250	1,129	463
Total other income (expense), net	15,268	4,891	20,565	13,935
Interest Income (Expense)
Total interest income (expense), net	(1,908)	1,716	(350)	5,392
Income (Loss) Before Income Taxes	30,149	23,145	50,235	57,358
Income tax expense (benefit)	9,626	6,869	15,939	20,512
Net Income (Loss)	20,523	16,276	34,296	36,846
Noncontrolling interests	(1,731)	(651)	(2,782)	(770)
Net Income (Loss) Attributable to Stockholders	18,792	15,625	31,514	36,076
Preferred stockholder dividends	(2,084)	0	(6,252)	0
Net Income (Loss) Attributable to Common Stockholders	$ 16,708	$ 15,625	$ 25,262	$ 36,076
Earnings (Loss) per share—Basic (in $ per share)	$ 2.32	$ 2.04	$ 3.64	$ 4.47
Earnings (Loss) per Share—Diluted (in $ per share)	2.21	1.99	3.52	4.39
Cash Dividends Declared per Preferred Share (in $ per share)	1.81	0	5.4375	0
Cash Dividends Declared per Common Share (in $ per share)	$ 0.45	$ 0.45	$ 1.35	$ 1.35
Weighted Average Shares Outstanding—Basic (in shares)	7,212	7,676	6,942	8,062
Weighted Average Shares Outstanding—Diluted (in shares)	8,492	7,854	7,168	8,223
Consolidated investment products
Operating Expenses
Total operating expenses	$ 6,757	$ 635	$ 7,872	$ 6,442
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	13,465	3,680	16,485	9,888
Interest Income (Expense)
Interest expense	(16,249)	(3,788)	(22,101)	(10,188)
Interest and dividend income	17,778	5,411	28,536	14,856
Consolidated entity excluding consolidated investment products
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	1,367	961	2,951	3,584
Interest Income (Expense)
Interest expense	(4,116)	(128)	(8,098)	(389)
Interest and dividend income	$ 679	$ 221	$ 1,313	$ 1,113