Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 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 discussed in Note 18, as of December 31, 2016 and December 31, 2015, by fair value hierarchy level were as follows:

December 31, 2016
	Level 1		Level 2		Level 3		Total
($ in thousands)
Assets
Cash equivalents	$	48,620	$	—	$	—	$	48,620
Marketable securities trading:
Sponsored funds	60,019		—		—		60,019
Equity securities	11,473		—		—		11,473
Marketable securities available-for-sale:
Sponsored closed-end funds	3,415		—		—		3,415
Other investments
Nonqualified retirement plan assets	5,808		—		—		5,808
Total assets measured at fair value	$	129,335	$	—	$	—	$	129,335

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