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Investments In Unconsolidated Joint Ventures (Overlook Ridge JV, L.L.C.) (Narrative) (Details) (USD $)
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0 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | ||||||||||||
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Jul. 15, 2013
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Sep. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2013
Lennar Massachusetts Properties [Member]
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Sep. 30, 2013
LR JV-C Associates, L.L.C. [Member]
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Sep. 30, 2013
LR JV-C Associates, L.L.C. [Member]
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Sep. 30, 2013
LR Overlook Phase III, L.L.C. [Member]
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Sep. 30, 2013
Overlook Ridge JV, L.L.C. [Member]
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Oct. 23, 2012
Overlook Ridge JV, L.L.C. [Member]
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Oct. 23, 2012
Overlook Ridge JV's Interest In LR JV-C Associates [Member]
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Oct. 23, 2012
Overlook Ridge JV's Interest In LR Overlook Phase III [Member]
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Oct. 23, 2012
Quarrystone I Property [Member]
Overlook Ridge JV, L.L.C. [Member]
item
sqft
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Oct. 23, 2012
Overlook Phase III [Member]
Overlook Ridge JV, L.L.C. [Member]
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Sep. 30, 2013
Letter of Credit [Member]
LR JV-C Associates, L.L.C. [Member]
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Sep. 30, 2013
Senior Loans [Member]
LR JV-C Associates, L.L.C. [Member]
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Sep. 30, 2013
Junior Loans [Member]
LR JV-C Associates, L.L.C. [Member]
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| Schedule of Equity Method Investments [Line Items] | ||||||||||||||||
| Indirect residual ownership percentage | 25.00% | |||||||||||||||
| Number of units | 251 | |||||||||||||||
| Investment ownership percentage | 50.00% | 100.00% | 50.00% | |||||||||||||
| Area of property (in square feet) | 278,721 | |||||||||||||||
| Percentage of interest in venture | 50.00% | |||||||||||||||
| Priority partnership loan | $ 18,800,000 | |||||||||||||||
| Accrued interest payable | 23,472,000 | 27,555,000 | 14,400,000 | |||||||||||||
| Amount of unrecovered capital to determine cash flow distribution | 0 | |||||||||||||||
| Mortgage loans, carrying amount | 69,900,000 | 69,900,000 | 5,600,000 | 52,900,000 | 17,000,000 | |||||||||||
| Mortgage loan, maturity date | March 2016 | April 2015 | ||||||||||||||
| Spread over LIBOR | 1.25% | 2.50% | 2.00% | 0.90% | ||||||||||||
| Borrowing capacity under the credit facility | 600,000,000 | 600,000,000 | 17,000,000 | |||||||||||||
| Loan extension period | 1 year | |||||||||||||||
| Extension fee | 0.25% | |||||||||||||||
| Amount of debt guaranteed by company | 1,500,000 | |||||||||||||||
| Management, leasing and other services fees | $ 46,000 | $ 137,000 | ||||||||||||||
| Holding and distribution pattern under operating agreement | In general, the operating agreement of LR Overlook provides, among other things, for distributions of cash flow to the members in accordance with their ownership percentages, subject to the repayment of priority partnership loans. | The operating agreement of Overlook Ridge JV provides, among other things, for the distribution of distributable cash, as defined, to the members, as follows:First, to the members in proportion to their respective unrecovered capital percentages, as defined in the agreement, until each member's unrecovered capital has been reduced to zero; and Second, to the members in accordance with their ownership percentages. | ||||||||||||||