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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2013
Fair Value Measurements [Abstract]  
Fair value measurements for items measured at fair value
Fair value measurements for assets measured at fair value included the following as of September 30, 2013 and December 31, 2012:

 
 
Fair Value
  
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
  
Significant
Other
Observable
Inputs
(Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
 
 
 
(In thousands)
 
September 30, 2013
 
  
  
  
 
 
 
  
  
  
 
U.S. Treasury securities and obligations of U.S. government corporations and agencies
 
$
786,767
  
$
786,767
  
$
-
  
$
-
 
Obligations of U.S. states and political subdivisions
  
912,833
   
-
   
910,263
   
2,570
 
Corporate debt securities
  
2,164,458
   
-
   
2,164,458
   
-
 
Asset-backed securities
  
340,814
   
-
   
340,814
   
-
 
Residential mortgage-backed securities
  
377,565
   
-
   
377,565
   
-
 
Commercial mortgage-backed securities
  
253,807
   
-
   
253,807
   
-
 
Collateralized loan obligations
  
60,505
   
-
   
60,505
   
-
 
Debt securities issued by foreign sovereign governments
  
120,539
   
120,539
   
-
   
-
 
Total debt securities
  
5,017,288
   
907,306
   
4,107,412
   
2,570
 
Equity securities
  
2,884
   
2,563
   
-
   
321
 
Total investments
 
$
5,020,172
  
$
909,869
  
$
4,107,412
  
$
2,891
 
Real estate acquired (1)
 
$
12,376
  
$
-
  
$
-
  
$
12,376
 
 
 
 
 
Fair Value
  
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
  
Significant
Other
Observable
Inputs
(Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
 
 
 
(In thousands)
 
 
 
  
  
  
 
December 31, 2012
 
  
  
  
 
 
 
  
  
  
 
U.S. Treasury securities and obligations of U.S. government corporations and agencies
 
$
866,251
  
$
866,251
  
$
-
  
$
-
 
Obligations of U.S. states and political subdivisions
  
812,394
   
-
   
809,264
   
3,130
 
Corporate debt securities
  
1,480,941
   
-
   
1,463,827
   
17,114
 
Asset-backed securities
  
324,436
   
-
   
324,436
   
-
 
Residential mortgage-backed securities
  
450,909
   
-
   
450,909
   
-
 
Commercial mortgage-backed securities
  
150,342
   
-
   
150,342
   
-
 
Debt securities issued by foreign sovereign governments
  
142,066
   
142,066
   
-
   
-
 
Total debt securities
  
4,227,339
   
1,008,317
   
3,198,778
   
20,244
 
Equity securities
  
2,936
   
2,615
   
-
   
321
 
Total investments
 
$
4,230,275
  
$
1,010,932
  
$
3,198,778
  
$
20,565
 
Real estate acquired (1)
 
$
3,463
  
$
-
  
$
-
  
$
3,463
 

(1) Real estate acquired through claim settlement, which is held for sale, is reported in Other Assets on the consolidated balance sheet.

Reconciliation of beginning and ending balance for assets and liabilities measured at fair value with significant unobservable inputs (level 3)
For assets measured at fair value using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances for the three and nine months ended September 30, 2013 and 2012 is as follows:
 
 
 
Obligations of U.S.
States and Political
Subdivisions
  
Corporate Debt
Securities
  
Equity
Securities
  
Total
Investments
  
Real Estate
Acquired
 
 
 
(In thousands)
 
Balance at June 30, 2013
 
$
2,811
  
$
-
  
$
321
  
$
3,132
  
$
8,741
 
Total realized/unrealized gains (losses):
                    
Included in earnings and reported as losses incurred, net
  
-
   
-
   
-
   
-
   
(1,378
)
Purchases
  
-
   
-
   
-
   
-
   
10,857
 
Sales
  
(241
)
  
-
   
-
   
(241
)
  
(5,844
)
Transfers into Level 3
  
-
   
-
   
-
   
-
   
-
 
Transfers out of Level 3
  
-
   
-
   
-
   
-
   
-
 
Balance at September 30, 2013
 
$
2,570
  
$
-
  
$
321
  
$
2,891
  
$
12,376
 
 
                    
Amount of total losses included in earnings for the three months ended September 30, 2013 attributable to the change in unrealized losses on assets still held at September 30, 2013
 
$
-
  
$
-
  
$
-
  
$
-
  
$
-
 
 
 
 
Obligations of U.S.
States and Political
Subdivisions
  
Corporate
Debt Securities
  
Equity
Securities
  
Total
Investments
  
Real Estate
Acquired
 
 
 
(In thousands)
 
Balance at December 31, 2012
 
$
3,130
  
$
17,114
  
$
321
  
$
20,565
  
$
3,463
 
Total realized/unrealized gains (losses):
                    
Included in earnings and reported as realized investment gains (losses), net
  
-
   
(225
)
  
-
   
(225
)
  
-
 
Included in earnings and reported as losses incurred, net
  
-
   
-
   
-
   
-
   
(3,680
)
Purchases
  
30
   
-
   
-
   
30
   
28,401
 
Sales
  
(590
)
  
(16,889
)
  
-
   
(17,479
)
  
(15,808
)
Transfers into Level 3
  
-
   
-
   
-
   
-
   
-
 
Transfers out of Level 3
  
-
   
-
   
-
   
-
   
-
 
Balance at September 30, 2013
 
$
2,570
  
$
-
  
$
321
  
$
2,891
  
$
12,376
 
 
                    
Amount of total losses included in earnings for the nine months ended September 30, 2013 attributable to the change in unrealized losses on assets still held at September 30, 2013
 
$
-
  
$
-
  
$
-
  
$
-
  
$
-
 
 
 
Obligations of U.S.
States and Political
Subdivisions
Corporate Debt
Securities
Equity
Securities
Total
Investments
Real Estate
Acquired
 
(In thousands)
Balance at June 30, 2012
 
$
83,981
  
$
40,857
  
$
321
  
$
125,159
  
$
3,074
 
Total realized/unrealized gains (losses):
                    
Included in earnings and reported as realized investment gains (losses), net
  
(467
)
  
-
   
-
   
(467
)
  
-
 
Included in earnings and reported as impairment losses, net
  
-
   
-
   
-
   
-
   
-
 
Included in earnings and reported as losses incurred, net
  
-
   
-
   
-
   
-
   
(309
)
Included in other comprehensive income
  
971
   
68
   
-
   
1,039
   
-
 
Purchases
  
-
   
-
   
-
   
-
   
2,718
 
Sales
  
(10,690
)
  
-
   
-
   
(10,690
)
  
(2,386
)
Transfers into Level 3
  
-
   
-
   
-
   
-
   
-
 
Transfers out of Level 3
  
-
   
-
   
-
   
-
   
-
 
Balance at September 30, 2012
 
$
73,795
  
$
40,925
  
$
321
  
$
115,041
  
$
3,097
 
 
                    
Amount of total losses included in earnings for the three months ended September 30, 2012 attributable to the change in unrealized losses on assets still held at September 30, 2012
 
$
-
  
$
-
  
$
-
  
$
-
  
$
-
 
 
 
 
Obligations of U.S.
States and Political
Subdivisions
  
Corporate Debt
Securities
  
Equity
Securities
  
Total
Investments
  
Real Estate
Acquired
 
 
 
(In thousands)
 
Balance at December 31, 2011
 
$
114,226
  
$
60,228
  
$
321
  
$
174,775
  
$
1,621
 
Total realized/unrealized gains (losses):
                    
Included in earnings and reported as realized investment gains (losses), net
  
(2,992
)
  
(1,081
)
  
-
   
(4,073
)
  
-
 
Included in earnings and reported as impairment losses, net
  
-
   
(339
)
  
-
   
(339
)
  
-
 
Included in earnings and reported as losses incurred, net
  
-
   
-
   
-
   
-
   
(774
)
Included in other comprehensive income
  
1,727
   
423
   
-
   
2,150
   
-
 
Purchases
  
27
   
-
   
-
   
27
   
8,688
 
Sales
  
(39,193
)
  
(18,306
)
  
-
   
(57,499
)
  
(6,438
)
Transfers into Level 3
  
-
   
-
   
-
   
-
   
-
 
Transfers out of Level 3
  
-
   
-
   
-
   
-
   
-
 
Balance at September 30, 2012
 
$
73,795
  
$
40,925
  
$
321
  
$
115,041
  
$
3,097
 
 
                    
Amount of total losses included in earnings for the nine months ended September 30, 2012 attributable to the change in unrealized losses on assets still held at September 30, 2012
 
$
-
  
$
-
  
$
-
  
$
-
  
$
-