Quarterly report pursuant to Section 13 or 15(d)

Investments in Unconsolidated Real Estate Joint Ventures (Summary Balance Sheets for Unconsolidated Joint Ventures) (Details)

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Investments in Unconsolidated Real Estate Joint Ventures (Summary Balance Sheets for Unconsolidated Joint Ventures) (Details) - Unconsolidated Properties [Member] - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Assets    
Land $ 93,222 $ 95,686
Buildings, improvements and fixtures 497,518 505,618
Construction in progress 2,994 3,005
Rental property, at cost, total 593,734 604,309
Accumulated depreciation (103,662) (93,837)
Total rental property, net 490,072 510,472
Cash and cash equivalents 18,352 25,061
Deferred lease costs and other intangibles, net 10,057 10,985
Prepaids and other assets 16,944 15,073
Total assets 535,425 561,591
Liabilities and Owners' Equity    
Mortgages payable, net 360,529 351,259
Accounts payable and other liabilities 12,253 14,680
Total liabilities 372,782 365,939
Owners' equity 162,643 195,652
Total liabilities and owners' equity $ 535,425 $ 561,591