Quarterly report pursuant to Section 13 or 15(d)

Commercial Real Estate Assets (Details)

v3.7.0.1
Commercial Real Estate Assets (Details)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
unit
Dec. 31, 2016
USD ($)
unit
Mar. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Unpaid principal balance $ 1,796,247 $ 1,424,445        
Unamortized (discount) premium (190) (200)        
Unamortized net deferred origination fees (13,308) (11,702)        
Commercial real estate assets 1,782,749 1,412,543 $ 1,548,603 $ 926,377 $ 744,259 $ 660,953
Unfunded commitments $ 215,283 $ 172,470        
Number of loans | unit 46 36        
Weighted average coupon 5.80% 5.40%        
Weighted average years to maturity 2 years 7 months 6 days 2 years 9 months 18 days        
First Mortgage [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Unpaid principal balance $ 1,648,342 $ 1,286,200        
Unamortized (discount) premium (178) (185)        
Unamortized net deferred origination fees (13,179) (11,481)        
Commercial real estate assets 1,634,985 1,274,534        
Unfunded commitments $ 213,703 $ 170,890        
Number of loans | unit 39 30        
Weighted average coupon 5.60% 5.10%        
Weighted average years to maturity 2 years 7 months 6 days 2 years 10 months 24 days        
Second Mortgage [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Unpaid principal balance $ 132,969 $ 138,245        
Unamortized (discount) premium (12) (15)        
Unamortized net deferred origination fees (129) (221)        
Commercial real estate assets 132,828 138,009        
Unfunded commitments $ 1,580 $ 1,580        
Number of loans | unit 6 6        
Weighted average coupon 9.00% 8.60%        
Weighted average years to maturity 2 years 1 year 6 months        
Junior Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Unpaid principal balance $ 14,936 $ 0        
Unamortized (discount) premium 0 0        
Unamortized net deferred origination fees 0 0        
Commercial real estate assets 14,936 0        
Unfunded commitments $ 0 $ 0        
Number of loans | unit 1 0        
Weighted average coupon 8.00% 0.00%        
Weighted average years to maturity 9 years 7 months 6 days 0 days