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Supplemental Information to Statements of Cash Flows - Cash Flow Information (Detail) (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Supplemental Cash Flow Information [Line Items]      
Interest Paid, Net of Capitalized Interest $ 83,504 $ 100,375 $ 105,276
Capitalized Interest 1,997 437  
Income Taxes (Refunded) Paid (295) 1,876 3,663
Supplemental Schedule of Non-Cash Investing and Financing Activities:      
Distribution Payable on Preferred Stock 452 4,763 452
Property Transfer to Lender in Satisfaction of Non-Recourse      
Net Investment in Real Estate   (3,200)  
Prepaid Expenses and Other Assets, Net   (1,987)  
Mortgage Loan Payable, Net   5,040  
Loss from Retirement of Debt   (147)  
Mortgage Loan Payable Assumed in Conjunction with a Property Acquisition 12,026 24,417  
Notes Receivable Issued in Conjunction with Certain Property Sales   7,029 168
Write-off of Fully Depreciated Assets (46,801) (58,357) (59,485)
Noncontrolling interest [Member]
      
Supplemental Schedule of Non-Cash Investing and Financing Activities:      
Conversion of Units to Common Stock (4,763) (1,109) (316)
Common stock [Member]
      
Supplemental Schedule of Non-Cash Investing and Financing Activities:      
Conversion of Units to Common Stock 5 1 1
Additional paid-in-capital [Member]
      
Supplemental Schedule of Non-Cash Investing and Financing Activities:      
Conversion of Units to Common Stock $ 4,758 $ 1,108 $ 315