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INVESTMENTS (DETAILS 4) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Mortgage Loans held-for-investment, net [Abstract]    
Commercial $ 349,969 $ 206,277
Commercial, Percent 100.00% 100.00%
Valuation allowances $ 0 $ 0
Valuation allowance, Percent 0.00% 0.00%
Total Mortgage Loans held-for-investment $ 349,969 $ 206,277
Total Mortgage Loans held-for-investment, Percent 100.00% 100.00%
Debt service coverage ratio, in excess of 1.1  
Loan-to-value ratio, percent (less than) 70.00%  
Credit losses on commercial mortgage loans $ 0