Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Changes in Assets and Liabilities Measured at Fair Value on Recurring Basis

The Company’s assets and liabilities measured at fair value, excluding the assets and liabilities of consolidated sponsored investment products discussed in Note 12, on a recurring basis as of September 30, 2014 and December 31, 2013 by fair value hierarchy level were as follows:

September 30, 2014

	Level 1		Level 2		Level 3		Total
($ in thousands)
Assets
Cash equivalents	$	171,934	$	—	$	—	$	171,934
Marketable securities trading:
Sponsored funds		38,829		—		—		38,829
Equity securities		8,927		—		—		8,927
Marketable securities available for sale:
Sponsored funds		3,089		—		—		3,089
Other investments:
Nonqualified retirement plan assets		4,654		—		—		4,654
Total assets measured at fair value	$	227,433	$	—	$	—	$	227,433

December 31, 2013

	Level 1		Level 2		Level 3		Total
($ in thousands)
Assets
Cash equivalents	$	270,262	$	—	$	—	$	270,262
Marketable securities trading:
Sponsored funds		17,904		—		—		17,904
Equity securities		8,379		—		—		8,379
Marketable securities available for sale:
Sponsored funds		2,685		—		—		2,685
Other investments:
Nonqualified retirement plan assets		4,220		—		—		4,220
Total assets measured at fair value	$	303,450	$	—	$	—	$	303,450