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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES      
Reserve investment yield assumptions, high end of the range (as a percent) 2.00%    
Reserve investment yield assumptions, low end of the range (as a percent) 8.75%    
Activity in the liability for unpaid claims for life and health insurance      
Less: reinsurance $ 5,805,401    
Other changes:      
Add: reinsurance 6,175,115    
Life and health insurance
     
Activity in the liability for unpaid claims for life and health insurance      
Balance beginning of year 326,633 312,799 299,971
Less: reinsurance 155,341 161,450 156,932
Net balance beginning of year 171,292 151,349 143,039
Incurred related to:      
Current year 698,028 702,555 653,525
Prior year 68,396 62,926 65,269
Total incurred 766,424 765,481 718,794
Paid related to:      
Current year 682,877 664,744 639,118
Prior year 85,146 80,794 76,424
Total paid 768,023 745,538 715,542
Other changes:      
Acquisition and reserve transfers 47,255   5,058
Net balance end of year 216,948 171,292 151,349
Add: reinsurance 117,502 155,341 161,450
Balance end of year $ 334,450 $ 326,633 $ 312,799