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, 2017
Jun. 30, 2017
Redeemable Noncontrolling Interest [Line Items]    
Income Attributed to Noncontrolling Interests $ (2,682) $ (3,474)
Redemption Value Adjustment   (17,317)
Redeemable noncontrolling interests as of June 30, 2017 206,026 206,026
Redeemable Noncontrolling Interests [Member]    
Redeemable Noncontrolling Interest [Line Items]    
Balance  
Redeemable Noncontrolling Interests Issued   202,013
Issuance Costs   (11,027)
Net   190,986
Income Attributed to Noncontrolling Interests   3,474
Distributions   (3,474)
Redemption Value Adjustment   15,040
Redeemable noncontrolling interests as of June 30, 2017 206,026 206,026
Redeemable Noncontrolling Interests [Member] | Series A And Series A-1 Preferred Units [Member]    
Redeemable Noncontrolling Interest [Line Items]    
Balance  
Redeemable Noncontrolling Interests Issued   52,013
Issuance Costs   (464)
Net   51,549
Income Attributed to Noncontrolling Interests   720
Distributions   (720)
Redemption Value Adjustment   775
Redeemable noncontrolling interests as of June 30, 2017 52,324 52,324
Redeemable Noncontrolling Interests [Member] | Rockpoint [Member]    
Redeemable Noncontrolling Interest [Line Items]    
Balance  
Redeemable Noncontrolling Interests Issued   150,000
Issuance Costs   (10,563)
Net   139,437
Income Attributed to Noncontrolling Interests   2,754
Distributions   (2,754)
Redemption Value Adjustment   14,265
Redeemable noncontrolling interests as of June 30, 2017 $ 153,702 $ 153,702