SUPPLEMENTAL CASH FLOW DISCLOSURES (Tables)

12 Months Ended

Dec. 31, 2012

SUPPLEMENTAL CASH FLOW DISCLOSURES

Supplemental cash flow information including non-cash financing and investing activities

	2012			2011			2010
Supplemental disclosures:
Cash paid for interest, net of capitalized interest	$	127,249		$	126,267		$	117,292
Interest capitalized	4,380			5,255			9,384
Non-cash investing and financing activities:
Note receivable converted to real estate	608			—			—
Mortgage loans assumed associated with property acquisitions	7,284			—			155,639
Mortgage note premium (discount) written off	(104		)	(17		)	270
Issuance of UPREIT Units associated with property acquisitions	—			—			4,845
Exchange of UPREIT Units for common shares	6,899			11,399			10,234
Transfers of construction in progress to buildings, improvements and equipment	42,732			100,266			110,902
Capital improvements to properties included in accounts payable	6,130			6,577			5,292
Net real estate disposed in connection with VIE deconsolidation	—			—			13,837
Other assets disposed in connection with VIE deconsolidation	—			—			1,228
Mortgage debt disposed in connection with VIE deconsolidation	—			—			15,762
Other liabilities disposed in connection with VIE deconsolidation	—			—			1,031