Annual report pursuant to Section 13 and 15(d)

Investments in Unconsolidated Real Estate Joint Ventures - Management, Leasing and Marketing Fees (Details)

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Investments in Unconsolidated Real Estate Joint Ventures - Management, Leasing and Marketing Fees (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 30, 2012
Development Fee [Member]
Dec. 31, 2013
Development Fee [Member]
Dec. 31, 2011
Development Fee [Member]
Sep. 30, 2012
Loan Guarantee Fee [Member]
Dec. 31, 2013
Loan Guarantee Fee [Member]
Dec. 31, 2011
Loan Guarantee Fee [Member]
Sep. 30, 2012
Management and Leasing Fee [Member]
Dec. 31, 2013
Management and Leasing Fee [Member]
Dec. 31, 2011
Management and Leasing Fee [Member]
Sep. 30, 2012
Marketing Fee [Member]
Dec. 31, 2013
Marketing Fee [Member]
Dec. 31, 2011
Marketing Fee [Member]
Management, Leasing and Marketing Fees [Line Items]                              
Total Management, Leasing and Marketing Fees Paid by Unconsolidated Joint Ventures $ 3,080 $ 2,007 $ 1,216 $ 193 $ 595 $ 5 $ 80 $ 161 $ 0 $ 1,301 $ 1,831 $ 1,048 $ 433 $ 493 $ 163