Indebtedness (Tables)

6 Months Ended

Jun. 30, 2012

Indebtedness [Abstract]

Information regarding indebtedness

	Outstanding Balance at						Interest Rate at June 30, 2012		Effective Interest Rate at Issuance		Maturity Date
	June 30, 2012			December 31, 2011
Mortgage and Other Loans Payable, Net	$	578,851		$	584,288			4.45% – 9.25%		4.45% – 9.25%		January 2013- October 2021
Unamortized Premiums		(274	)		(305	)
Mortgage and Other Loans Payable, Gross	$	578,577		$	583,983

	Outstanding Balance at				Interest Rate at June 30, 2012			Effective Interest Rate at Issuance			Maturity Date
	June 30, 2012		December 31, 2011
Senior Unsecured Notes, Net
2016 Notes	$	159,483	$	159,455		5.750	%		5.91	%		01/15/16
2017 Notes		59,603		59,600		7.500	%		7.52	%		12/01/17
2027 Notes		6,066		6,065		7.150	%		7.11	%		05/15/27
2028 Notes		68,976		124,894		7.600	%		8.13	%		07/15/28
2012 Notes		—		61,817		6.875	%		6.85	%		04/15/12
2032 Notes		12,489		34,683		7.750	%		7.87	%		04/15/32
2014 Notes		78,994		86,997		6.420	%		6.54	%		06/01/14
2017 II Notes		106,730		106,716		5.950	%		6.37	%		05/15/17
Subtotal	$	492,341	$	640,227
Unamortized Discounts		3,327		4,625
Senior Unsecured Notes, Gross	$	495,668	$	644,852
Unsecured Credit Facility	$	306,000	$	149,000		2.191	%		2.191	%		12/12/14

Senior Unsecured Notes Repurchases

	Principal Amount Repurchased		Purchase Price
Senior Unsecured Notes Repurchases
2014 Notes	$	9,000	$	9,439
2028 Notes		55,955		57,041
2032 Notes		22,400		22,848
	$	87,355	$	89,328

Schedule of Maturities of Long-term Debt

	Amount
Remainder of 2012	$	5,577
2013		11,362
2014		451,160
2015		51,510
2016		287,172
Thereafter		573,464
Total	$	1,380,245

Summary of Indebtedness At Estimated Fair Value

	June 30, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Mortgage and Other Loans Payable, Net	$	578,851	$	631,036	$	584,288	$	630,400
Senior Unsecured Notes, Net		492,341		512,406		640,227		630,622
Unsecured Credit Facility		306,000		306,000		149,000		149,000
Total	$	1,377,192	$	1,449,442	$	1,373,515	$	1,410,022