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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2015
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 provide changes in the balances of each component of accumulated other comprehensive income, net of tax, for the periods ended March 31, 2015 and 2014:
Three Months Ended March 31, 2015
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at January 1
$
12,934,497

 
$
(77,988
)
 
$
12,856,509

Other comprehensive income before reclassifications
184,227

 
—

 
184,227

Amounts reclassified from accumulated other comprehensive income
(5,794
)
 
1,304

 
(4,490
)
Net current-period other comprehensive income
178,433

 
1,304

 
179,737

Ending balance
$
13,112,930

 
$
(76,684
)
 
$
13,036,246

Three Months Ended March 31, 2014
Unrealized Gains and Losses
On Available-for-Sale
Securities
 
Postretirement
Benefits Plans
 
 
Total
Beginning balance at January 1
$
11,395,757

 
$
(48,353
)
 
$
11,347,404

Other comprehensive income before reclassifications
325,932

 
—

 
325,932

Amounts reclassified from accumulated other comprehensive income
(322,831
)
 
366

 
(322,465
)
Net current-period other comprehensive income
3,101

 
366

 
3,467

Ending balance
$
11,398,858

 
$
(47,987
)
 
$
11,350,871
Schedule Of Reclassification Out Of Accumulated Other Comprehensive Income
The following tables provide significant amounts reclassified out of each component of accumulated other comprehensive income for the periods ended March 31, 2015 and 2014:
Three Months Ended March 31, 2015
 
 
 
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
$
8,803

 
 
Other-than-temporary impairments
—

 
 
Total
$
8,803

 
Net realized gain on investment
Tax
(3,009
)
 
Provision for Income Taxes
Net of Tax
$
5,794

 
 
Amortization related to postretirement benefit plans:
 

 
 
Prior year service cost
$
(1,097
)
 
 
Unrecognized loss
(879
)
 
 
Total
$
(1,976
)
 
(a)
Tax
672

 
Provision for Income Taxes
Net of Tax
$
(1,304
)
 
 
Reclassifications for the period
$
4,490

 
 
Three Months Ended March 31, 2014
 
 
 
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
$
502,199

 
 
Other-than-temporary impairments
(10,062
)
 
 
Total
$
492,137

 
Net realized gain on investment
Tax
(169,306
)
 
Provision for Income Taxes
Net of Tax
$
322,831

 
 
Amortization related to postretirement benefit plans:
 

 
 
Prior year service cost
$
(554
)
 
 
Unrecognized gain (loss)
—

 
 
Total
$
(554
)
 
(a)
Tax
188

 
Provision for Income Taxes
Net of Tax
$
(366
)
 
 
Reclassifications for the period
$
322,465

 
 

(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 and accretion related to postretirement benefit plans is included in the computation of net periodic pension costs, as discussed in Note 5.