Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Revenues	$ 140,489	$ 132,932	$ 271,207	$ 261,960
Operating Expenses
Employment expenses	58,123	54,868	118,974	115,564
Distribution and other asset-based expenses	21,322	23,721	41,086	46,012
Other operating expenses	19,174	19,128	37,897	35,990
Depreciation and other amortization	1,271	1,100	2,484	2,115
Amortization expense	7,583	5,024	15,124	10,060
Restructuring and severance	320	0	1,496	0
Total operating expenses	110,361	105,624	220,080	212,035
Operating Income (Loss)	30,128	27,308	51,127	49,925
Other Income (Expense)
Other income (expense), net	696	455	1,146	1,774
Total other income (expense), net	12,455	(364)	14,417	3,652
Interest Income (Expense)
Total interest income (expense), net	(5,896)	5,750	(2,170)	9,467
Income (Loss) Before Income Taxes	36,687	32,694	63,374	63,044
Income tax expense (benefit)	8,788	9,465	13,007	15,988
Net Income (Loss)	27,899	23,229	50,367	47,056
Noncontrolling interests	(973)	(159)	(1,695)	(686)
Net Income (Loss) Attributable to Stockholders	26,926	23,070	48,672	46,370
Preferred stockholder dividends	(2,084)	(2,084)	(4,168)	(4,168)
Net Income (Loss) Attributable to Common Stockholders	$ 24,842	$ 20,986	$ 44,504	$ 42,202
Earnings (Loss) per share—Basic (in $ per share)	$ 3.55	$ 2.91	$ 6.35	$ 5.86
Earnings (Loss) per Share—Diluted (in $ per share)	3.26	2.75	5.87	5.52
Cash Dividends Declared per Preferred Share (in $ per share)	1.8125	1.8125	3.625	3.625
Cash Dividends Declared per Common Share (in $ per share)	$ 0.55	$ 0.45	$ 1.10	$ 0.90
Weighted Average Shares Outstanding—Basic (in shares)	6,999	7,211	7,010	7,204
Weighted Average Shares Outstanding—Diluted (in shares)	8,252	8,401	8,290	8,396
Consolidated Investment Products
Operating Expenses
Total operating expenses	$ 2,568	$ 1,783	$ 3,019	$ 2,294
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	9,720	(1,779)	7,799	480
Interest Income (Expense)
Interest expense	(31,077)	(15,278)	(50,778)	(29,827)
Interest and dividend income	29,368	23,679	56,770	45,082
Consolidated entity excluding consolidated investment products
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	2,039	960	5,472	1,398
Interest Income (Expense)
Interest expense	(5,151)	(4,469)	(10,316)	(8,327)
Interest and dividend income	964	1,818	2,154	2,539
Investment management fees
Revenues
Revenues	114,591	103,168	220,509	203,644
Distribution and service fees
Revenues
Revenues	10,617	13,549	20,680	26,156
Administration and shareholder service fees
Revenues
Revenues	15,054	15,967	29,467	31,705
Other income and fees
Revenues
Revenues	$ 227	$ 248	$ 551	$ 455