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, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Noncontrolling Interest [Line Items]        
Balance, value     $ 192,428  
Unit distributions     (4,396)  
Redeemable noncontrolling interest $ (2,989) $ (2,682) (5,788) $ (3,474)
Redemption of common units for common stock, value      
Other comprehensive income (loss)     6,933  
Rebalancing of ownership percentage between parent and subsidiaries      
Balance, value 190,069   190,069  
Noncontrolling Interests In Subsidiaries [Member]        
Noncontrolling Interest [Line Items]        
Balance, value     192,428 199,516
Net income     10,404 1,055
Issuance of limited partner common units     2,793
Unit distributions     (4,396) (3,961)
Redeemable noncontrolling interest     (6,485) (4,906)
Decrease in noncontrolling interest in consolidated joint ventures     51 (1,081)
Redemption of common units for common stock, value     (3,741) (2,531)
Stock compensation     2,238 1,973
Cancellation of restricted shares     (289)
Other comprehensive income (loss)     706 (13)
Rebalancing of ownership percentage between parent and subsidiaries     (847) (2,888)
Balance, value $ 190,069 $ 189,957 $ 190,069 $ 189,957