XML 91 R77.htm IDEA: XBRL DOCUMENT v3.6.0.2
Mortgage Loans on Real Estate (Mortgage Loans by Credit Quality Indicator) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Mortgage Loans on Real Estate [Abstract]      
Performing $ 2,489,028 $ 2,438,341  
In workout 1,591 11,568  
Delinquent 0 0  
Collateral dependent 0 0  
Principal outstanding $ 2,490,619 $ 2,449,909 $ 2,457,721