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Fair Value Of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Of Financial Instruments [Abstract]

Estimated Fair Values Of Financial Instruments

		March 31, 2012				December 31, 2011
		(Amounts in thousands)
Assets
Investments		$	3,119,246			$	3,062,421
Liabilities
Interest rate swap agreements		$	546			$	670
Equity contracts		$	405			$	655
Secured notes payable		$	140,000			$	140,000

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