Annual report pursuant to Section 13 and 15(d)

Investments In Unconsolidated Joint Ventures (Overlook Ridge JV, L.L.C.) (Narrative) (Details)

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Investments In Unconsolidated Joint Ventures (Overlook Ridge JV, L.L.C.) (Narrative) (Details) (USD $)
2 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Lennar Massachusetts Properties [Member]
Dec. 31, 2012
LR JV-C Associates, L.L.C. [Member]
Dec. 31, 2013
LR JV-C Associates, L.L.C. [Member]
Dec. 31, 2013
LR Overlook Phase III, L.L.C. [Member]
Dec. 31, 2013
Overlook Ridge JV, L.L.C. [Member]
Oct. 23, 2012
Overlook Ridge JV, L.L.C. [Member]
Oct. 23, 2012
Overlook Ridge JV's Interest In LR JV-C Associates [Member]
Oct. 23, 2012
Overlook Ridge JV's Interest In LR Overlook Phase III [Member]
Oct. 23, 2012
Quarrystone I Property [Member]
Overlook Ridge JV, L.L.C. [Member]
item
sqft
Oct. 23, 2012
Overlook Phase III [Member]
Overlook Ridge JV, L.L.C. [Member]
Dec. 31, 2013
Letter of Credit [Member]
LR JV-C Associates, L.L.C. [Member]
Dec. 31, 2013
Senior Loans [Member]
LR JV-C Associates, L.L.C. [Member]
Dec. 31, 2013
Junior Loans [Member]
LR JV-C Associates, L.L.C. [Member]
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 29,153,000 27,555,000 15,400,000                        
Mortgage loans, carrying amount         69,800,000 5,600,000               52,800,000 17,000,000
Mortgage loan, maturity date         March 2016 April 2015                  
Spread over LIBOR           2.50%               2.00% 0.90%
Borrowing capacity under the credit facility                         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       $ 34,000 $ 184,000                    
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.