Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling Interests In Subsidiaries (Schedule Of Activity Of Noncontrolling Interests) (Details)

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Noncontrolling Interests In Subsidiaries (Schedule Of Activity Of Noncontrolling Interests) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Noncontrolling Interest [Line Items]      
Balance, value   $ 199,516  
Issuance of limited partner common units   2,793  
Common unit distributions   (3,961)  
Redeemable noncontrolling interest $ (2,682) (3,474)  
Decrease in noncontrolling interest in consolidated joint ventures   (4,821)  
Redemption of common units for common stock, value    
Other comprehensive income (loss)   (126)  
Rebalancing of ownership percentage between parent and subsidiaries    
Balance, value 189,957 189,957  
Noncontrolling Interests In Subsidiaries [Member]      
Noncontrolling Interest [Line Items]      
Balance, value   199,516 $ 228,032
Net income (loss)   1,055 12,551
Issuance of limited partner common units   2,793
Common unit distributions   (3,961) (3,274)
Redeemable noncontrolling interest   (4,906)
Decrease in noncontrolling interest in consolidated joint ventures   (1,081) (35,544)
Redemption of common units for common stock, value   (2,531) (308)
Stock compensation   1,973 842
Other comprehensive income (loss)   (13) (970)
Rebalancing of ownership percentage between parent and subsidiaries   (2,888) (514)
Balance, value $ 189,957 $ 189,957 $ 200,815