Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions (Summary Of Income (Loss) From Properties Disposed) (Details)

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Recent Transactions (Summary Of Income (Loss) From Properties Disposed) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Real Estate Properties [Line Items]    
Total revenues $ 152,923 $ 153,715
Depreciation and amortization (43,063) (40,802)
Income (loss) from properties disposed of 27,229 27,008
Realized gains on dispositions 58,600 144
Total income (loss) from properties disposed of 62,191 (2,521)
Disposal Group, Not Discontinued Operations [Member]    
Real Estate Properties [Line Items]    
Total revenues 1,608 7,629
Operating and other expenses (1,379) (2,524)
Depreciation and amortization (2,797) (1,685)
Interest expense (626) (2,710)
Income (loss) from properties disposed of (3,194) 710
Realized gains on dispositions 58,600 144
Total income (loss) from properties disposed of $ 55,406 $ 854