Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Financial Instruments

Schedule of fair value of derivative financial instruments, excluding derivative financial instruments held in certain consolidated sponsored funds

			March 31,	December 31,
			2017	2016
	Balance sheet
	location	Fair value		Fair value
		(in thousands)
Total return swap contracts	Other current liabilities	$	476	475

Schedule of net losses recognized in income of derivative financial instrument

	Income statement	Three months ended		Three months ended
	location	March 31, 2017		March 31, 2016
		(in thousands)
Total return swap contracts	Investment and other income (loss)	$	(11,045)	(15,222)