Quarterly report pursuant to Section 13 or 15(d)

Commercial Real Estate Assets (Details)

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Commercial Real Estate Assets (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
unit
Jun. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
unit
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial Real Estate Assets, Gross $ 1,122,797   $ 667,346      
Unamortized Discounts or Premiums, Commercial Real Estate Assets (232)   (237)      
Unamortized Net Deferred Origination Fees, Commercial Real Estate Assets (8,017)   (6,156)      
Commercial real estate assets 1,114,548 $ 926,377 660,953 $ 290,910 $ 45,605 $ 0
Unfunded Commitments, Commercial Real Estate Assets $ 95,341   $ 52,234      
Number of Instruments, Commercial Real Estate Assets | unit 28   18      
Weighted Average Coupon Rate, Commercial Real Estate Assets 5.30%   5.40%      
Weighted Average Life, Commercial Real Estate Assets 2.9   3.1      
Second Mortgage [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial Real Estate Assets, Gross $ 139,334   $ 153,913      
Unamortized Discounts or Premiums, Commercial Real Estate Assets (42)   (237)      
Unamortized Net Deferred Origination Fees, Commercial Real Estate Assets (380)   (830)      
Commercial real estate assets 138,912   152,846      
Unfunded Commitments, Commercial Real Estate Assets $ 1,580   $ 1,900      
Number of Instruments, Commercial Real Estate Assets | unit 6   6      
Weighted Average Coupon Rate, Commercial Real Estate Assets 8.40%   8.10%      
Weighted Average Life, Commercial Real Estate Assets 1.8   2.6      
First Mortgage [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial Real Estate Assets, Gross $ 983,463   $ 513,433      
Unamortized Discounts or Premiums, Commercial Real Estate Assets (190)   0      
Unamortized Net Deferred Origination Fees, Commercial Real Estate Assets (7,637)   (5,326)      
Commercial real estate assets 975,636   508,107      
Unfunded Commitments, Commercial Real Estate Assets $ 93,761   $ 50,334      
Number of Instruments, Commercial Real Estate Assets | unit 22   12      
Weighted Average Coupon Rate, Commercial Real Estate Assets 4.90%   4.50%      
Weighted Average Life, Commercial Real Estate Assets 3.1   3.3