Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2013

Financial Instruments, Owned, at Fair Value [Abstract]

Estimated Fair Values of Financial Instruments

The following table presents the estimated fair values of financial instruments at March 31, 2013 and December 31, 2012.

	March 31, 2013		December 31, 2012
	(Amounts in thousands)
Assets
Investments	$	3,204,757	$	3,180,095
Liabilities
Interest rate swap agreements	$	0	$	103
Equity contracts	$	628	$	175
Secured notes	$	140,000	$	140,000