Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Revenues	$ 152,210	$ 123,675	$ 414,170	$ 297,583
Operating Expenses
Employment expenses	63,269	54,159	178,833	136,792
Distribution and other asset-based expenses	25,386	20,552	71,398	51,639
Other operating expenses	20,350	17,733	56,340	51,195
Restructuring and severance	0	1,584	0	10,478
Depreciation and other amortization	1,189	1,038	3,304	2,478
Amortization expense	7,541	5,063	17,601	7,109
Total operating expenses	118,264	106,886	330,299	267,563
Operating Income (Loss)	33,946	16,789	83,871	30,020
Other Income (Expense)
Other income (expense), net	549	436	2,323	1,129
Total other income (expense), net	(4,560)	15,268	(908)	20,565
Interest Income (Expense)
Total interest income (expense), net	5,198	(1,908)	14,665	(350)
Income (Loss) Before Income Taxes	34,584	30,149	97,628	50,235
Income tax expense (benefit)	6,653	9,626	22,641	15,939
Net Income (Loss)	27,931	20,523	74,987	34,296
Noncontrolling interests	(933)	(1,731)	(1,619)	(2,782)
Net Income (Loss) Attributable to Stockholders	26,998	18,792	73,368	31,514
Preferred stockholder dividends	(2,085)	(2,084)	(6,253)	(6,252)
Net Income (Loss) Attributable to Common Stockholders	$ 24,913	$ 16,708	$ 67,115	$ 25,262
Earnings (Loss) per share—Basic (in $ per share)	$ 3.47	$ 2.32	$ 9.33	$ 3.64
Earnings (Loss) per Share—Diluted (in $ per share)	3.19	2.21	8.67	3.52
Cash Dividends Declared per Preferred Share (in $ per share)	1.81	1.81	5.44	5.44
Cash Dividends Declared per Common Share (in $ per share)	$ 0.55	$ 0.45	$ 1.45	$ 1.35
Weighted Average Shares Outstanding—Basic (in shares)	7,175	7,212	7,195	6,942
Weighted Average Shares Outstanding—Diluted (in shares)	8,456	8,492	8,463	7,168
Consolidated investment products
Operating Expenses
Total operating expenses	$ 529	$ 6,757	$ 2,823	$ 7,872
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	(4,735)	13,465	(4,255)	16,485
Interest Income (Expense)
Interest expense	(16,959)	(16,249)	(46,786)	(22,101)
Interest and dividend income	26,596	17,778	71,678	28,536
Consolidated entity excluding consolidated investment products
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	(374)	1,367	1,024	2,951
Interest Income (Expense)
Interest expense	(5,155)	(4,116)	(13,482)	(8,098)
Interest and dividend income	716	679	3,255	1,313
Investment management fees
Revenues
Revenues	121,713	97,295	325,357	230,628
Distribution and service fees
Revenues
Revenues	13,730	11,482	39,886	32,704
Administration and shareholder service fees
Revenues
Revenues	16,567	14,699	48,272	33,156
Other income and fees
Revenues
Revenues	$ 200	$ 199	$ 655	$ 1,095