Quarterly report pursuant to Section 13 or 15(d)

Acquisition of Rental Property Narrative (Details)

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Acquisition of Rental Property Narrative (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Deer Park [Member]
Sep. 30, 2013
Deer Park [Member]
Sep. 30, 2013
Deer Park [Member]
Aug. 30, 2013
Mezzanine and Senior Loans Combined [Member]
Deer Park [Member]
Business Acquisition [Line Items]          
Secured Debt         $ 238,500,000
Principal     150,000,000.0 [1] 150,000,000.0 [1]  
Debt Instrument, Basis Sparead on Variable Rate, Basis Points     150.00%    
Amount Borrowed Under Existing Lines of Credit to Fund Acquisition 89,500,000        
Interst rate, basis spread on variable rate     3.25%    
Gains (losses) on extinguishment of debt     13,800,000    
Gains (losses) on extinguishment of debt and litigation settlement     7,800,000 7,800,000  
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage   33.33%      
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage   67.00%      
Business Combination, Consideration Transferred to Equity Partner   27,900,000      
Payments to Acquire Equity Method Investments   13,900,000      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   450,576      
Acquisition costs   772,000      
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain   26,000,000      
Fixed Annual Lease Payments to Property Owners   2,500,000      
Pre Acquisition Value of Redeemable Noncontrolling Interest   28,400,000      
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   3,200,000      
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual   $ (337,000)      
[1] On August 30, 2013, as part of the acquisition of a controlling interest in Deer Park, we assumed an interest-only mortgage loan that has a 5 year term and carries an interest rate of LIBOR + 1.50%. In October 2013, we entered into interest rate swap agreements that fix the base LIBOR rate at an average of 1.30%, creating a contractual interest rate of 2.80%.