Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2019

Financial Instruments, Owned, at Fair Value [Abstract]

Estimated Fair Values of Financial Instruments

The following table presents the fair values of financial instruments:

	September 30, 2019		December 31, 2018
	(Amounts in thousands)
Assets
Investments	$	4,218,148	$	3,768,091
Note receivable	5,653		5,557
Liabilities
Total return swap	$	1,167	$	4,851
Options sold	237		3
Unsecured notes	394,129		362,674