Quarterly report pursuant to Section 13 or 15(d)

Investments in Unconsolidated Real Estate Joint Ventures (Joint Venture Fees) (Details)

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Investments in Unconsolidated Real Estate Joint Ventures (Joint Venture Fees) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Management, Leasing and other services [Line Items]        
Fees received $ 630 $ 609 $ 1,243 $ 1,188
Management and Marketing Fee [Member]        
Management, Leasing and other services [Line Items]        
Fees received 565 570 1,133 1,112
Leasing and other fees [Member]        
Management, Leasing and other services [Line Items]        
Fees received $ 65 $ 39 $ 110 $ 76