XML 54 R43.htm IDEA: XBRL DOCUMENT v3.8.0.1
INVESTMENTS INVESTMENTS (LOANS) (Details)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Mortgage Loans on Real Estate [Line Items]      
Mortgage loans on real estate $ 17,000,000 $ 17,000,000  
Mortgage loans on real estate, percentage of invested assets 1.00%    
Valuation allowances balance $ 0 0 $ 0
Commercial Real Estate Portfolio Segment      
Mortgage Loans on Real Estate [Line Items]      
Mortgage loans on real estate   $ 17,000,000  
Commercial Real Estate Portfolio Segment | Greater than 2.0x      
Mortgage Loans on Real Estate [Line Items]      
Mortgage loans on real estate $ 17,000,000    
Minimum      
Mortgage Loans on Real Estate [Line Items]      
Debt covenant, loan to value ratio 0    
Maximum      
Mortgage Loans on Real Estate [Line Items]      
Debt covenant, loan to value ratio 0.5