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Fair Value (Tables)
3 Months Ended
Mar. 31, 2014
Fair Value [Abstract]  
The Fair Value Calculated Using An Industry Accepted Option Pricing Model, Black-Scholes
 
At March 31, 2014
   
Contract
 
Contracts
based on
 
based on
FTSE 100
 
S & P 500 Index
Index
Equity index
 1,872.3
 
 6,598.4
Interest rate
1.28% to 3.64%
 
2.52%
Time to maturity
3.1 to 17.0 yrs
 
6.3 yrs
Volatility
20.8% to 25.0%
 
23.2%
Fair Value Measurement Levels For All Assets And Liabilities

         
Fair Value Measurement Using:
 
         
Quoted Prices
             
         
in Active
   
Significant
       
         
Markets for
   
Other
   
Significant
 
         
Identical
   
Observable
   
Unobservable
 
         
Assets
   
Inputs
   
Inputs
 
(Dollars in thousands)
 
March 31, 2014
 
(Level 1)
   
(Level 2)
   
(Level 3)
 
Assets:
                       
Fixed maturities, market value
                       
U.S. Treasury securities and obligations of
                       
U.S. government agencies and corporations
  $ 162,279     $ -     $ 162,279     $ -  
Obligations of U.S. States and political subdivisions
    966,324       -       966,324       -  
Corporate securities
    4,454,354       -       4,454,354       -  
Asset-backed securities
    184,064       -       180,392       3,672  
Mortgage-backed securities
                               
Commercial
    249,334       -       249,334       -  
Agency residential
    2,214,344       -       2,214,344       -  
Non-agency residential
    4,405       -       4,141       264  
Foreign government securities
    1,748,271       -       1,748,271       -  
Foreign corporate securities
    3,035,801       -       3,035,328       473  
Total fixed maturities, market value
    13,019,176       -       13,014,767       4,409  
                                 
Fixed maturities, fair value
    -       -       -       -  
Equity securities, market value
    153,822       136,145       17,677       -  
Equity securities, fair value
    1,398,430       1,282,347       116,083       -  
                                 
Liabilities:
                               
Equity index put option contracts
  $ 37,083     $ -     $ -     $ 37,083  
 

 

         
Fair Value Measurement Using:
 
         
Quoted Prices
             
         
in Active
   
Significant
       
         
Markets for
   
Other
   
Significant
 
         
Identical
   
Observable
   
Unobservable
 
         
Assets
   
Inputs
   
Inputs
 
(Dollars in thousands)
 
December 31, 2013
 
(Level 1)
   
(Level 2)
   
(Level 3)
 
Assets:
                       
Fixed maturities, market value
                       
U.S. Treasury securities and obligations of
                       
U.S. government agencies and corporations
  $ 161,025     $ -     $ 161,025     $ -  
Obligations of U.S. States and political subdivisions
    1,002,528       -       1,002,528       -  
Corporate securities
    4,079,416       -       4,079,416       -  
Asset-backed securities
    173,043       -       167,744       5,299  
Mortgage-backed securities
                               
Commercial
    270,441       -       270,441       -  
Agency residential
    2,279,053       -       2,279,053       -  
Non-agency residential
    4,819       -       4,472       347  
Foreign government securities
    1,780,769       -       1,780,769       -  
Foreign corporate securities
    2,885,813       -       2,885,332       481  
Total fixed maturities, market value
    12,636,907       -       12,630,780       6,127  
                                 
Fixed maturities, fair value
    19,388       -       19,388       -  
Equity securities, market value
    144,081       127,030       17,051       -  
Equity securities, fair value
    1,462,079       1,342,278       119,801       -  
                                 
Liabilities:
                               
Equity index put option contracts
  $ 35,423     $ -     $ -     $ 35,423  
 
Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type

   
Three Months Ended March 31, 2014
 
Three Months Ended March 31, 2013
   
Asset-backed
 
Foreign
 
Non-agency
     
Asset-backed
 
Foreign
 
Non-agency
 
Agency
   
(Dollars in thousands)
 
Securities
 
Corporate
 
RMBS
 
Total
 
Securities
 
Corporate
 
RMBS
 
RMBS
 
Total
Beginning balance
  $ 5,299     $ 481     $ 347     $ 6,127     $ 4,849     $ 11,913     $ 426     $ 34,842     $ 52,030  
Total gains or (losses) (realized/unrealized)
                                                                       
Included in earnings
    18       1       138       157       (99 )     -       57       -       (42 )
Included in other comprehensive income (loss)
    33       -       (21 )     12       (190 )     (123 )     7       -       (306 )
Purchases, issuances and settlements
    (742 )     (9 )     (200 )     (951 )     126       743       (83 )     -       786  
Transfers in and/or (out) of Level 3
    (936 )     -       -       (936 )     -       (10,254 )     -       (34,842 )     (45,096 )
Ending balance
  $ 3,672     $ 473     $ 264     $ 4,409     $ 4,686     $ 2,279     $ 407     $ -     $ 7,372  
                                                                         
The amount of total gains or losses for the period included
                                                                       
in earnings (or changes in net assets) attributable to the
                                                                       
change in unrealized gains or losses relating to assets
                                                                       
still held at the reporting date
  $ -     $ -     $ -     $ -     $ -     $ -     $ -     $ -     $ -  
                                                                         
(Some amounts may not reconcile due to rounding.)
                                                                       
 
Fair Value Measurements Using Significant Unobservable Inputs For Equity Index Put Option Contracts
   
Three Months Ended
 
   
March 31,
 
(Dollars in thousands)
 
2014
   
2013
 
Liabilities:
           
Balance, beginning of period
  $ 35,423     $ 79,467  
Total (gains) or losses (realized/unrealized)
               
Included in earnings
    1,661       (15,285 )
Included in other comprehensive income (loss)
    -       -  
Purchases, issuances and settlements
    -       -  
Transfers in and/or (out) of Level 3
    -       -  
Balance, end of period
  $ 37,083     $ 64,181  
                 
The amount of total gains or losses for the period included in earnings
               
(or changes in net assets) attributable to the change in unrealized
               
gains or losses relating to liabilities still held at the reporting date
  $ -     $ -  
                 
(Some amounts may not reconcile due to rounding.)