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Other Comprehensive Income
 9 Months Ended
Sep. 30, 2012
Equity [Abstract]  
Other Comprehensive Income
Other Comprehensive Income

The gross amounts of each component of other comprehensive income and the related tax effects are as follows:
 
Pre-tax
 
Tax Expense (Benefit)
 
Net of Tax
Three Months Ended September 30,
2012
 
2011
 
2012
 
2011
 
2012
 
2011
Investment securities available-for sale:
 
 
 
 
 
 
 
 
 
 
 
Change in net unrealized gain during period
$
931

 
$
2,781

 
$
366

 
$
1,094

 
$
565

 
$
1,687

Reclassification adjustment for net gains included in net income
(66
)
 
(38
)
 
(26
)
 
(15
)
 
(40
)
 
(23
)
Defined benefits post-retirement benefit plan:
 
 
 
 
 
 
 
 
 
 
 
Change in net actuarial loss
35

 
35

 
14

 
14

 
21

 
21

Total other comprehensive income
$
900

 
$
2,778

 
$
354

 
$
1,093

 
$
546

 
$
1,685

 
 
 
 
 
 
 
 
 
 
 
 
 
Pre-tax
 
Tax Expense (Benefit)
 
Net of Tax
Nine Months Ended September 30,
2012
 
2011
 
2012
 
2011
 
2012
 
2011
Investment securities available-for sale:
 
 
 
 
 
 
 
 
 
 
 
Change in net unrealized gain during period
$
(175
)
 
$
24,200

 
$
(69
)
 
$
9,522

 
$
(106
)
 
$
14,678

Reclassification adjustment for net gains included in net income
(295
)
 
(56
)
 
(116
)
 
(22
)
 
(179
)
 
(34
)
Defined benefits post-retirement benefit plan:
 
 
 
 
 
 
 
 
 
 
 
Change in net actuarial loss
102

 
104

 
40

 
41

 
62

 
63

Total other comprehensive income
$
(368
)
 
$
24,248

 
$
(145
)
 
$
9,541

 
$
(223
)
 
$
14,707


    
The components of accumulated other comprehensive income, net of income taxes, are as follows:    
 
September 30,
2012
 
December 31,
2011
Net unrealized gain on investment securities available-for-sale
$
20,248

 
$
20,533

Net actuarial loss on defined benefit post-retirement benefit plans
(1,437
)
 
(1,499
)
Net accumulated other comprehensive income
$
18,811

 
$
19,034