Investments (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2013

Dec. 31, 2012

Investments [Abstract]

Investments

Investments consist of:

	June 30, 2013		December 31, 2012
	(in thousands)
Available-for-sale (primarily seed capital)	$	12,423	$	13,361
Trading:
Long-term incentive compensation-related		77,802		90,825
United States Treasury Bills		27,996		27,982
Seed capital		276,365		307,795
Equities and exchange-traded options		61,640		48,937
Investments in limited partnership hedge funds:
Long-term incentive compensation-related		30,630		32,152
Seed capital		94,991		109,328
Consolidated private equity fund (10% seed capital)		49,725		47,045
Private equity (seed capital)		46,401		47,853
Other		8,245		7,056
Total investments	$	686,218	$	732,334

Investments consist of:

	December 31,
	2012		2011
	(in thousands)
Available-for-sale (primarily seed capital)	$	13,361	$	13,883
Trading:
Long-term incentive compensation-related		90,825		135,832
United States Treasury Bills		27,982		37,998
Seed capital		307,795		278,932
Equities and exchange-traded options		48,937		58,237
Investments in limited partnership hedge funds:
Long-term incentive compensation-related		32,152		40,538
Seed capital		109,328		123,920
Consolidated private equity fund (10% seed capital)		47,045		58,749
Private equity (seed capital)		47,853		35,726
Other		7,056		11,479
Total investments	$	732,334	$	795,294