Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Summary Of Income From Discontinued Operations And Related Realized And Unrealized Gains (Losses)) (Details)

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Discontinued Operations (Summary Of Income From Discontinued Operations And Related Realized And Unrealized Gains (Losses)) (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Discontinued Operations [Abstract]      
Total revenues $ 175,938,000 $ 164,891,000 $ 157,171,000
Operating and other expenses (70,640,000) (68,093,000) (62,654,000)
Depreciation and amortization (72,602,000) (62,605,000) (62,849,000)
Interest expense (5,240,000) (6,238,000) (8,790,000)
Loss from early extinguishment of debt   (1,821,000)  
Income from discontinued operations 27,456,000 26,134,000 22,878,000
Unrealized losses on disposition of rental property (144,090,000)    
Realized gains on disposition of rental property 7,916,000    
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net (136,174,000)    
Total discontinued operations, net (108,718,000) 26,134,000 22,878,000
Valuation allowance 9,800,000   $ (5,300,000)
Accumulated depreciation $ 558,617,000 $ 1,097,868,000