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Accumulated Other Comprehensive Income
 3 Months Ended
Mar. 31, 2013
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Acumulated Other Comprehensive Income
Note 6.  Accumulated Other Comprehensive Income

The following table presents the components of other comprehensive loss for the three months ended March 31, 2013 and 2012:
(dollars in thousands)
Before Tax

 
Tax Effect

 
Net of Tax

Three Months Ended March 31, 2013
 

 
 

 
 

Net Unrealized Losses on Investment Securities:
 

 
 

 
 

Net Unrealized Losses Arising During the Period
$
(12,595
)
 
$
(4,957
)
 
$
(7,638
)
Less: Reclassification Adjustment for Gains Realized in Net Income 1
(3,307
)
 
(1,304
)
 
(2,003
)
Net Unrealized Losses on Investment Securities
(15,902
)
 
(6,261
)
 
(9,641
)
Defined Benefit Plans:
 

 
 

 
 

Net Actuarial Losses Arising During the Period
(206
)
 
(81
)
 
(125
)
Amortization of Accumulated Benefit Plan Losses
414

 
163

 
251

Amortization of Prior Service Credit Included in Net Periodic Benefit Cost
(80
)
 
(32
)
 
(48
)
Defined Benefit Plans, Net
128

 
50

 
78

Other Comprehensive Loss
$
(15,774
)
 
$
(6,211
)
 
$
(9,563
)
 
 
 
 
 
 
Three Months Ended March 31, 2012
 

 
 

 
 

Net Unrealized Losses on Investment Securities:
 

 
 

 
 

Net Unrealized Losses Arising During the Period
$
(6,586
)
 
$
(2,590
)
 
$
(3,996
)
Less: Reclassification Adjustment for Gains Realized in Net Income 1
(4,024
)
 
(1,566
)
 
(2,458
)
Net Unrealized Losses on Investment Securities
(10,610
)
 
(4,156
)
 
(6,454
)
Defined Benefit Plans:
 

 
 

 
 

Amortization of Accumulated Benefit Plan Losses
332

 
130

 
202

Amortization of Prior Service Credit Included in Net Periodic Benefit Cost
(81
)
 
(32
)
 
(49
)
Defined Benefit Plans, Net
251

 
98

 
153

Other Comprehensive Loss
$
(10,359
)
 
$
(4,058
)
 
$
(6,301
)

1 
Includes amounts related to the amortization of holding gains related to the Company's reclassification of available-for-sale investment securities to the held-to-maturity category during the year ended December 31, 2011. The holding gains will be amortized over the remaining life of the investment securities as an adjustment of yield.

The following table presents the changes in each component of accumulated other comprehensive income, net of tax, for the three months ended March 31, 2013:
(dollars in thousands)
 
Net Unrealized Gains and Losses on Investment Securities1

 
Defined Benefit Plans1

 
Total

January 1, 2013
 
$
59,777

 
$
(30,569
)
 
$
29,208

Other Comprehensive Loss Before Reclassifications
 
(7,638
)
 
(125
)
 
(7,763
)
Amounts Reclassified from Accumulated Other
        Comprehensive Income
 
(2,003
)
 
203

 
(1,800
)
Net Current-Period Other Comprehensive Loss
 
(9,641
)
 
78

 
(9,563
)
March 31, 2013
 
$
50,136

 
$
(30,491
)
 
$
19,645

1 
Amounts in parentheses indicate debits.
The following table presents the amounts reclassified out of each component of accumulated other comprehensive income for the three months ended March 31, 2013:
Details about Accumulated Other
Comprehensive Income Components (dollars in thousands)
Amount Reclassified from Accumulated Other Comprehensive Income1

Affected Line Item in the Statement Where Net Income Is Presented
Amortization of Unrealized Holding Gains on Investment Securities Transferred from Available-for-Sale to Held-to-Maturity 2                                                                                          
$
3,307

Interest Income
 
(1,304
)
Tax Expense
 
$
2,003

Net of Tax
 

 
Amortization of Defined Benefit Pension Items

 
Prior Service Credit 3
$
80

 
Net Actuarial Losses 3
(414
)
 
 
(334
)
Total Before Tax
 
131

Tax Benefit
 
$
(203
)
Net of Tax
 

 
Total Reclassifications for the Period
$
1,800

Net of Tax
1 
Amounts in parentheses indicate debits in profit/loss.
2 
The amortization of the unrealized holding gains in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer. Both components are amortized as an adjustment of yield.
3 
These accumulated other comprehensive income components are included in the computation of net periodic benefit cost (see Note 9 for additional details).