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Investments in Joint Ventures (Aggregate Balance Sheet And Statement Of Income Data For Unconsolidated Joint Ventures) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Investments in Joint Ventures [Abstract]      
Total assets $ 717,300   $ 726,900
Total third-party debt 519,200   518,700
Total equity 183,400   $ 184,000
Total revenues 30,000 $ 29,500  
Net income 3,800 2,800  
Equity in income (1) [1] $ 1,817 $ 1,497  
[1] Equity in income excludes our ownership interest of fee income from various services provided by us to the Funds.