Disclosure about Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Disclosure about Fair Value of Financial Instruments (Tables) [Abstract]

Carrying amounts and estimated fair values of financial instruments

	September 30, 2011				December 31, 2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets:
Mortgage loans receivable	$	68,378	$	70,258	$	109,283	$	111,255
Other real estate loans receivable		252,233		257,382		327,297		333,003
Available-for-sale equity investments		789		789		1,103		1,103
Cash and cash equivalents		136,676		136,676		131,570		131,570
Financial Liabilities:
Borrowings under unsecured lines of credit arrangements	$	390,000	$	390,000	$	300,000	$	300,000
Senior unsecured notes		4,432,092		4,564,824		3,034,949		3,267,638
Secured debt		1,888,083		2,434,344		1,125,906		1,178,081
Interest rate swap agreements		1,368		1,368		482		482

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The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis

	Fair Value Measurements as of September 30, 2011
	Total			Level 1		Level 2			Level 3
Available-for-sale equity investments (1)	$	789		$	789	$	—		$	—
Interest rate swap agreements (2)		(1,368	)		—		(1,368	)		—
Totals	$	(579	)	$	789	$	(1,368	)	$	—

(1) Unrealized gains or losses on equity investments are recorded in accumulated other comprehensive income (loss) at each measurement date.

(2) Please see Note 11 for additional information.