Investments (Tables)

6 Months Ended

Jun. 30, 2017

Investments Schedule [Abstract]

Summary of Investments

At June 30, 2017 and December 31, 2016, the Company's investments were as follows:

	June 30, 2017		December 31, 2016
($ in thousands)
Marketable securities	$	72,162	$	74,907
Equity method investments	11,004		7,731
Nonqualified retirement plan assets	6,396		5,808
Other investments	3,834		925
Total investments	$	93,396	$	89,371

Schedule of Marketable Securities

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

June 30, 2017

	Cost		Unrealized Loss			Unrealized Gain		Fair Value
($ in thousands)
Trading:
Sponsored funds	$	56,235	$	(1,115	)	$	540	$	55,660
Equity securities	10,969		—			1,771		12,740
Available-for-sale:
Sponsored closed-end funds	3,630		(220		)	352		3,762
Total marketable securities	$	70,834	$	(1,335	)	$	2,663	$	72,162

December 31, 2016

	Cost		Unrealized Loss			Unrealized Gain		Fair Value
($ in thousands)
Trading:
Sponsored funds	$	61,784	$	(1,942	)	$	177	$	60,019
Equity securities	10,578		—			895		11,473
Available-for-sale:
Sponsored closed-end funds	3,500		(265		)	180		3,415
Total marketable securities	$	75,862	$	(2,207	)	$	1,252	$	74,907