Quarterly report pursuant to Section 13 or 15(d)

Redeemable Noncontrolling Interests (Schedule Of Changes In The Value Of The Redeemable Noncontrolling Interests) (Details)

v3.10.0.1
Redeemable Noncontrolling Interests (Schedule Of Changes In The Value Of The Redeemable Noncontrolling Interests) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Redeemable Noncontrolling Interest [Line Items]        
Balance January 1, 2018     $ 212,208  
Income Attributed to Noncontrolling Interests $ (3,785) $ (2,683) (9,573) $ (6,157)
Redemption Value Adjustment     (19,371)  
Redeemable noncontrolling interests as of September 30, 2018 307,415   307,415  
Redeemable Noncontrolling Interests [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance January 1, 2018     212,208  
Redeemable Noncontrolling Interests Issued     85,000  
Net     297,208  
Income Attributed to Noncontrolling Interests     9,573  
Distributions     (9,573)  
Redemption Value Adjustment     10,207  
Redeemable noncontrolling interests as of September 30, 2018 307,415   307,415  
Redeemable Noncontrolling Interests [Member] | Series A And Series A-1 Preferred Units [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance January 1, 2018     52,324  
Redeemable Noncontrolling Interests Issued      
Net     52,324  
Income Attributed to Noncontrolling Interests     1,365  
Distributions     (1,365)  
Redemption Value Adjustment      
Redeemable noncontrolling interests as of September 30, 2018 52,324   52,324  
Redeemable Noncontrolling Interests [Member] | Rockpoint [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance January 1, 2018     159,884  
Redeemable Noncontrolling Interests Issued     85,000  
Net     244,884  
Income Attributed to Noncontrolling Interests     8,208  
Distributions     (8,208)  
Redemption Value Adjustment     10,207  
Redeemable noncontrolling interests as of September 30, 2018 $ 255,091   $ 255,091