Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.0.6
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Disclosure [Abstract]                      
Minimum adjusted taxable income to be distributed to shareholders to qualify as a REIT (as a percent)                 90.00%    
Subsequent period during which entity would be disqualified as a REIT if during any tax year entity fails to qualify as a REIT (in years)                 4 years    
Net (loss) income $ 19,010 $ (20,765) $ 11,861 $ 10,235 $ (91,102) $ 7,470 $ (25,378) $ (18,566) $ 20,341 $ (127,576) $ 45,504
Adjustments:                      
Rental revenue recognition                 (12,575) (10,708) (9,192)
Compensation expense recognition                 (2,098) (1,298) (4,820)
Operating expense recognition                 1,148 751 280
Gain on sales of properties                 (45,323) 1,154 6,548
Asset Impairment Charges, Continuing and Noncontinuing Operations Including Exit Costs 2,140 55,829 2,354 6,587 151,021 78,674 44,605 27,742 66,910 151,021 0
Loss on interest rate derivatives                 29,805 (29,805) 0
Gains from non-real estate investments                 2,843 4,447 (6,994)
Income from service operations                 1,500 (12,078) (1,628)
Income tax expense                 381 6,710 119
Depreciation and amortization                 25,410 44,070 42,365
Discounts/premiums included in interest expense                 3,194 5,548 5,841
Income from unconsolidated entities                 (725) (374) (244)
Noncontrolling interests, gross                 (463) (7,502) (3,288)
Other                 836 80 2,173
Taxable income                 $ 31,574 $ 84,050 $ 76,664