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Accumulated Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2013
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule Of Changes In Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax
The following tables illustrates changes in the balances of each component of accumulated other comprehensive income, net of tax, for the periods ended June 30, 2013 and 2012:

Three Months Ended June 30, 2013
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at April 1
$
10,479,645

 
$
(101,665
)
 
$
10,377,980

Other comprehensive (loss) income before reclassifications
(1,081,096
)
 
—

 
(1,081,096
)
Amounts reclassified from accumulated other comprehensive (loss) income
(36,670
)
 
787

 
(35,883
)
Net current-period other comprehensive (loss) income
(1,117,766
)
 
787

 
(1,116,979
)
Ending balance
$
9,361,879

 
$
(100,878
)
 
$
9,261,001

Three Months Ended June 30, 2012
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at April 1
$
8,741,199

 
$
(52,714
)
 
$
8,688,485

Other comprehensive (loss) income before reclassifications
(306,199
)
 
—

 
(306,199
)
Amounts reclassified from accumulated other comprehensive (loss) income
(36,133
)
 
1,663

 
(34,470
)
Net current-period other comprehensive (loss) income
(342,332
)
 
1,663

 
(340,669
)
Ending balance
$
8,398,867

 
$
(51,051
)
 
$
8,347,816

Six Months Ended June 30, 2013
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at January 1
$
8,920,883

 
$
(102,453
)
 
$
8,818,430

Other comprehensive (loss) income before reclassifications
489,148

 
—

 
489,148

Amounts reclassified from accumulated other comprehensive (loss) income
(48,152
)
 
1,575

 
(46,577
)
Net current-period other comprehensive (loss) income
440,996

 
1,575

 
442,571

Ending balance
$
9,361,879

 
$
(100,878
)
 
$
9,261,001

 
Six Months Ended June 30, 2012
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at January 1
$
7,563,541

 
$
(54,376
)
 
$
7,509,165

Other comprehensive (loss) income before reclassifications
998,284

 
—

 
998,284

Amounts reclassified from accumulated other comprehensive (loss) income
(162,958
)
 
3,325

 
(159,633
)
Net current-period other comprehensive (loss) income
835,326

 
3,325

 
838,651

Ending balance
$
8,398,867

 
$
(51,051
)
 
$
8,347,816
Schedule Of Reclassification Out Of Accumulated Other Comprehensive Income
The following tables provides significant amounts reclassified out of each component of accumulated other comprehensive income for the periods ended June 30, 2013 and 2012:
Three Months Ended June 30, 2013
 
 
 
Details about Accumulated Other
Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income
 
 Affected Line Item in the Consolidated
Statements of Income
Unrealized gains and losses on available-for-sale securities:
 

 
Net realized gain on investment
$
70,857


 
Other-than-temporary impairments
(15,585
)

 
Total
$
55,272


Net realized gain on investment
Tax
(18,602
)

Provision for Income Taxes
Net of Tax
$
36,670


 
Accretion (amortization) related to postretirement benefit plans:
 

 
 
Prior year service cost
$
379

 
 
Unrecognized loss
(1,574
)
 
 
Total
$
(1,195
)
 
(a)
Tax
408

 
Provision for Income Taxes
Net of Tax
$
(787
)
 
 
Reclassifications for the period
$
35,883

 
 
Three Months Ended June 30, 2012
 
 
 
 
Details about Accumulated Other
Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income
 
Affected Line Item in the Consolidated
Statements of Income
Unrealized gains and losses on available-for-sale securities:
 
 
 
Net realized gain on investment
$
141,687

 
 
Other-than-temporary impairments
(76,539
)
 
 
Total
$
65,148

 
Net realized gain on investment
Tax
(29,015
)
 
Provision for Income Taxes
Net of Tax
$
36,133

 
 
Amortization related to postretirement benefit plans:
 

 
 
Prior year service cost
$
(2,349
)
 
 
Unrecognized loss
(170
)
 
 
Total
$
(2,519
)
 
(a)
Tax
856

 
Provision for Income Taxes
Net of Tax
$
(1,663
)
 
 
Reclassifications for the period
$
34,470

 
 
Six Months Ended June 30, 2013
 

 
Details about Accumulated Other
Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income

 Affected Line Item in the Consolidated
Statements of Income
Unrealized gains and losses on available-for-sale securities:
 

 
Net realized gain on investment
$
105,686


 
Other-than-temporary impairments
(34,070
)

 
Total
$
71,616


Net realized gain on investment
Tax
(23,464
)

Provision for Income Taxes
Net of Tax
$
48,152


 
Accretion (amortization) related to postretirement benefit plans:
 


 
Prior year service cost
$
759


 
Unrecognized loss
(3,147
)

 
Total
$
(2,388
)

(a)
Tax
813


Provision for Income Taxes
Net of Tax
$
(1,575
)

 
Reclassifications for the period
$
46,577


 
Six Months Ended June 30, 2012
 
 
 
Details about Accumulated Other
Comprehensive Income Components
Amount Reclassified from
Accumulated Other
Comprehensive Income
 
 Affected Line Item in the Consolidated
Statements of Income
Unrealized gains and losses on available-for-sale securities:
 
 
 
Net realized gain on investment
$
334,568

 
 
Other-than-temporary impairments
(76,539
)
 
 
Total
$
258,029

 
Net realized gain on investment
Tax
(95,071
)
 
Provision for Income Taxes
Net of Tax
$
162,958

 
 
Amortization related to postretirement benefit plans:
 

 
 
Prior year service cost
$
(4,698
)
 
 
Unrecognized loss
(340
)
 
 
Total
$
(5,038
)
 
(a)
Tax
1,713

 
Provision for Income Taxes
Net of Tax
$
(3,325
)
 
 
Reclassifications for the period
$
159,633

 
 

(a)
These accumulated other comprehensive income components are not reclassified to net income in their entirety in the same reporting period. The amounts are presented within salaries, employee benefits and payroll taxes on the Consolidated Statements of Income as amortized. Amortization related to postretirement benefit plans is included in the computation of net periodic pension costs, as discussed in Note 5.