Quarterly report pursuant to Section 13 or 15(d)

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

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Redeemable Noncontrolling Interests (Schedule Of Changes In The Value Of The Redeemable Noncontrolling Interests) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Redeemable Noncontrolling Interest [Line Items]        
Balance     $ 330,459  
Income Attributed to Noncontrolling Interests $ (5,006) $ (2,989) (9,673) $ (5,788)
Redemption Value Adjustment (including value adjustment attributable to Add On Investment Agreement) (23,615) (6,752) (31,791) (12,618)
Redeemable noncontrolling interests 496,372   496,372  
Issuance Costs 1,500   1,500  
Redeemable Noncontrolling Interests [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance 379,195 225,326 330,459 212,208
Redeemable Noncontrolling Interests Issued (net of new issuance costs of $1.5 million) 98,517 55,000 143,517 65,000
Net 477,712 280,326 473,976 277,208
Income Attributed to Noncontrolling Interests 5,006 2,989 9,673 5,788
Distributions (5,006) (2,989) (9,673) (5,788)
Redemption Value Adjustment (including value adjustment attributable to Add On Investment Agreement) 18,660 3,889 22,396 7,007
Redeemable noncontrolling interests 496,372 284,215 496,372 284,215
Redeemable Noncontrolling Interests [Member] | Series A And Series A-1 Preferred Units [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance 52,324 52,324 52,324 52,324
Redeemable Noncontrolling Interests Issued (net of new issuance costs of $1.5 million)      
Net 52,324 52,324 52,324 52,324
Income Attributed to Noncontrolling Interests 455 455 910 910
Distributions (455) (455) (910) (910)
Redemption Value Adjustment (including value adjustment attributable to Add On Investment Agreement)      
Redeemable noncontrolling interests 52,324 52,324 52,324 52,324
Redeemable Noncontrolling Interests [Member] | Rockpoint [Member]        
Redeemable Noncontrolling Interest [Line Items]        
Balance 326,871 173,002 278,135 159,884
Redeemable Noncontrolling Interests Issued (net of new issuance costs of $1.5 million) 98,517 55,000 143,517 65,000
Net 425,388 228,002 421,652 224,884
Income Attributed to Noncontrolling Interests 4,551 2,534 8,763 4,878
Distributions (4,551) (2,534) (8,763) (4,878)
Redemption Value Adjustment (including value adjustment attributable to Add On Investment Agreement) 18,660 3,889 22,396 7,007
Redeemable noncontrolling interests $ 444,048 $ 231,891 $ 444,048 $ 231,891