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Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2013
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes activity in the unrealized gain or loss on available for sale securities included in other comprehensive income for the three months ended March 31, 2013 and 2012.
 
For the three months ended March 31,
 
2013
 
2012
Balance at beginning of period
$
7,940,000

 
$
7,401,000

Unrealized gains (losses) arising during the period
(3,495,000
)
 
42,000

Reclassification of realized gains during the period
(299,000
)
 
(523,000
)
Related deferred taxes
1,328,000

 
168,000

Net change
(2,466,000
)
 
(313,000
)
Balance at end of period
$
5,474,000

 
$
7,088,000


The reclassification of realized gains is included in the net securities gain line of the consolidated statements of income and comprehensive income and the tax effect is included in the income tax expense line of the same statement.
The following table summarizes activity in the unrealized gain or loss on postretirement benefits included in other comprehensive income for the three months ended March 31, 2013 and 2012.
 
For the three months ended
March 31,
 
2013
 
2012
Unrecognized transition obligation at beginning of period
$
(123,000
)
 
$
(87,000
)
Amortization of unrecognized transition obligation
5,000

 
7,000

Related deferred taxes
(1,000
)
 
(2,000
)
Unrecognized transition obligation at end of period
$
(119,000
)
 
$
(82,000
)