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Comprehensive Income
 12 Months Ended
Dec. 31, 2011
Comprehensive Income [Abstract]  
Comprehensive Income
11. Comprehensive Income
Comprehensive income is the total of net income and all other non-owner changes in equity. Items recognized under accounting standards as components of comprehensive income are displayed in the consolidated statements of changes in equity, and additional information is presented below about the Company's components of other comprehensive income.

The first component of other comprehensive income is the unrealized holding gains and losses on available for sale securities. These gains and losses have been separated into two groups in the table below, as required by current accounting guidance on other-than-temporary impairment on debt securities. Under this guidance, credit-related losses on debt securities with other-than-temporary impairment are recorded in current earnings, while the noncredit-related portion of the overall gain or loss in fair value is recorded in other comprehensive income (loss). Changes in the noncredit-related gain or loss in fair value of these securities, after other-than-temporary impairment (OTTI) was initially recognized, are shown separately in the table below. The remaining unrealized holding gains and losses shown in the table apply to available for sale investment securities for which OTTI has not been recorded (and include holding gains and losses on certain securities prior to the recognition of OTTI).

The second component of other comprehensive income is pension gains and losses that arise during the period but are not recognized as components of net periodic benefit cost, and corresponding adjustments when these gains and losses are subsequently amortized to net periodic benefit cost.

In the calculation of other comprehensive income, certain reclassification adjustments are made to avoid double counting gains and losses that are included as part of net income for a period that also had been included as part of other comprehensive income in that period or earlier periods. The reclassification amounts and the related income tax expense or benefit are shown in the table below.
                   
 
                   
(In thousands)
2011
2010
2009
Available for sale debt securities for which OTTI has been recognized:
 
 
 
Unrealized holding gains subsequent to initial OTTI
   recognition
$
5,184

$
22,973

$
12,251

Income tax expense
(1,970
)
(8,730
)
(4,655
)
Net unrealized gains on OTTI securities
3,214

14,243

7,596

Other available for sale investment securities:
 
 
 
Unrealized holding gains
78,059

6,412

150,443

Income tax expense on unrealized gains
(29,663
)
(2,470
)
(57,152
)
Reclassification adjustment for gains realized
   and included in net income
(177
)
(3,488
)
(322
)
Reclassification adjustment for tax expense on
   realized gains
68

1,359

106

Net unrealized gains on other securities
48,287

1,813

93,075

Prepaid pension cost:
 
 
 
Amortization of accumulated pension loss
1,949

2,208

2,990

Net gain (loss) arising during period
(8,898
)
(786
)
951

Income tax (expense) benefit on change in pension loss
2,641

(540
)
(1,476
)
Change in pension loss
(4,308
)
882

2,465

Other comprehensive income
$
47,193

$
16,938

$
103,136


The end of period components of accumulated other comprehensive income (loss) are shown in the table below. At December 31, 2011, accumulated other comprehensive income was $110.5 million, net of tax. It was comprised of $4.3 million in unrealized holding losses on available for sale debt securities for which OTTI has been recorded, $136.1 million in unrealized holding gains on other available for sale securities, and $21.3 million in accumulated pension loss.
                   
 
                   
(In thousands)
Unrealized Gains (Losses) on Securities
Pension Loss
Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2009
$
64,259

$
(17,852
)
$
46,407

 Current period other
    comprehensive income
16,056

882

16,938

Balance at December 31, 2010
80,315

(16,970
)
63,345

 Current period other
    comprehensive income
51,501

(4,308
)
47,193

Balance at December 31, 2011
$
131,816

(21,278
)
$
110,538