XML 58 R43.htm IDEA: XBRL DOCUMENT v3.5.0.2
Mortgage Loans on Real Estate (Mortgage Loan Portfolio Summarized by Geographic Region and Property Type) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 2,463,412 $ 2,449,909
Percent 100.00% 100.00%
Office [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 341,209 $ 396,154
Percent 13.90% 16.20%
Medical Office [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 72,087 $ 77,438
Percent 2.90% 3.20%
Retail [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 815,013 $ 790,158
Percent 33.10% 32.20%
Industrial/Warehouse [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 690,503 $ 686,400
Percent 28.00% 28.00%
Hotel [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 3,255 $ 3,361
Percent 0.10% 0.10%
Apartment [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 372,459 $ 352,971
Percent 15.10% 14.40%
Mixed Use/Other [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 168,886 $ 143,427
Percent 6.90% 5.90%
East [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 672,512 $ 698,113
Percent 27.30% 28.50%
Middle Atlantic [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 160,283 $ 160,261
Percent 6.50% 6.60%
Mountain [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 234,568 $ 252,442
Percent 9.50% 10.30%
New England [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 12,944 $ 13,161
Percent 0.60% 0.50%
Pacific [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 385,306 $ 355,268
Percent 15.60% 14.50%
South Atlantic [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 472,253 $ 456,227
Percent 19.20% 18.60%
West North Central [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 325,402 $ 313,120
Percent 13.20% 12.80%
West South Central [Member]    
Mortgage Loans on Real Estate [Line Items]    
Principal outstanding $ 200,144 $ 201,317
Percent 8.10% 8.20%