Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis

The Company’s assets and liabilities measured at fair value on a recurring basis, excluding the assets and liabilities of consolidated sponsored investment products and the consolidated investment product, which are separately discussed in Note 13, as of June 30, 2016 and December 31, 2015 by fair value hierarchy level were as follows:

June 30, 2016

	Level 1		Level 2		Level 3		Total
($ in thousands)
Assets
Cash equivalents	$	121,552	$	—	$	—	$	121,552
Marketable securities trading:
Sponsored funds	66,465		—		—		66,465
Equity securities	10,200		—		—		10,200
Marketable securities available-for-sale:
Sponsored closed-end funds	3,569		—		—		3,569
Other investments:
Nonqualified retirement plan assets	5,430		—		—		5,430
Total assets measured at fair value	$	207,216	$	—	$	—	$	207,216

December 31, 2015

	Level 1		Level 2		Level 3		Total
($ in thousands)
Assets
Cash equivalents	$	54,772	$	—	$	—	$	54,772
Marketable securities trading:
Sponsored funds	29,331		—		—		29,331
Equity securities	9,168		—		—		9,168
Marketable securities available-for-sale:
Sponsored closed-end funds	2,997		—		—		2,997
Other investments
Nonqualified retirement plan assets	5,310		—		—		5,310
Total assets measured at fair value	$	101,578	$	—	$	—	$	101,578