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, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Management, Leasing and Marketing Fees [Line Items]        
Fees paid by unconsolidated joint ventures $ 758 $ 562 $ 1,324 $ 1,277
Development Fee [Member]
       
Management, Leasing and Marketing Fees [Line Items]        
Fees paid by unconsolidated joint ventures 70 (81) 78 (12)
Loan Guarantee Fee [Member]
       
Management, Leasing and Marketing Fees [Line Items]        
Fees paid by unconsolidated joint ventures 146 40 187 80
Management and Leasing Fee [Member]
       
Management, Leasing and Marketing Fees [Line Items]        
Fees paid by unconsolidated joint ventures 438 504 846 1,001
Marketing Fee [Member]
       
Management, Leasing and Marketing Fees [Line Items]        
Fees paid by unconsolidated joint ventures $ 104 $ 99 $ 213 $ 208