Investments (Tables)

3 Months Ended

Mar. 31, 2018

Investments Schedule [Abstract]

Summary of Investments

At March 31, 2018 and December 31, 2017, the Company's investments were as follows:

	March 31, 2018		December 31, 2017
($ in thousands)
Marketable securities	$	62,039	$	66,424
Equity method investments	12,420		11,098
Nonqualified retirement plan assets	6,669		6,706
Investments in collateralized loan obligations	43,295		23,339
Other investments	925		925
Total investments	$	125,348	$	108,492

Schedule of Marketable Securities

The composition of the Company’s marketable securities is summarized as follows:

March 31, 2018

	Cost		Unrealized Loss			Unrealized Gain		Fair Value
($ in thousands)
Marketable securities:
Sponsored funds	$	41,463	$	(928	)	$	1,380	$	41,915
Equity securities	13,621		(11		)	2,939		16,549
Sponsored closed-end funds	3,770		(382		)	187		3,575
Total marketable securities	$	58,854	$	(1,321	)	$	4,506	$	62,039

December 31, 2017

	Cost		Unrealized Loss			Unrealized Gain		Fair Value
($ in thousands)
Marketable securities:
Sponsored funds	$	47,084	$	(1,294	)	$	1,059	$	46,849
Equity securities	13,141		(2		)	2,671		15,810
Sponsored closed-end funds	3,761		(302		)	306		3,765
Total marketable securities	$	63,986	$	(1,598	)	$	4,036	$	66,424