Consolidated Statement Of Changes In Equity - 3 months ended Mar. 31, 2016 - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Dividends In Excess Of Net Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interests In Subsidiaries [Member]
Total
Balance, value at Dec. 31, 2015 $ 896 $ 2,570,392 $ (1,115,612)   $ 228,032 $ 1,683,708
Balance, shares at Dec. 31, 2015 89,584          
Net income (loss)     62,191   6,578 68,769
Common stock dividends     (13,446)     (13,446)
Unit distributions         (1,601) (1,601)
Increase in noncontrolling interest in consolidated joint ventures         997 997
Redemption of common units for common stock, value   276     (276)  
Redemption of common units for common stock, shares 17          
Shares issued under Dividend Reinvestment and Stock Purchase Plan, value   10       10
Directors' deferred compensation plan, value   101       101
Stock compensation, value   612     173 785
Stock compensation, shares 37          
Other comprehensive income (loss)       $ (5,675) (665) (6,340)
Rebalancing of ownership percentage between parent and subsidiaries   118     (118)  
Balance, value at Mar. 31, 2016 $ 896 $ 2,571,509 $ (1,066,867) $ (5,675) $ 233,120 $ 1,732,983
Balance, shares at Mar. 31, 2016 89,638