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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2013
Income Tax Disclosure [Abstract] |
Schedule of deferred tax assets and liabilities | Significant components of the Corporation’s deferred tax assets and liabilities are as follows:
December 31 (In thousands) |  | 2013 |  | 2012
Deferred tax assets: |  |
Allowance for loan losses |  | $ | 20,814 |  |  | $ | 19,438 |
Accumulated other comprehensive loss – Pension Plan |  | 3,015 |  |  | 14,611 |
Accumulated other comprehensive loss – Unrealized losses on securities |  | 16,057 |  |  | — |
Intangible assets |  | 673 |  |  | 697 |
Deferred compensation |  | 3,611 |  |  | 3,750 |
OREO devaluations |  | 5,287 |  |  | 4,855 |
Partnership adjustments |  | 3,793 |  |  | 3,329 |
Other |  | 3,705 |  |  | 2,973 |
Total deferred tax assets |  | $ | 56,955 |  |  | $ | 49,653 |
Deferred tax liabilities: |  |  |  |
Accumulated other comprehensive income – Unrealized gains on securities |  | — |  |  | 5,178 |
Deferred investment income |  | 10,199 |  |  | 10,199 |
Pension Plan |  | 25,261 |  |  | 25,517 |
Mortgage servicing rights |  | 3,154 |  |  | 2,717 |
Other |  | 850 |  |  | 646 |
Total deferred tax liabilities |  | $ | 39,464 |  |  | $ | 44,257 |
Net deferred tax assets |  | $ | 17,491 |  |  | $ | 5,396 |
Federal and state income taxes | The components of the provision for federal and state income taxes are shown below:
December 31, (In thousands) |  | 2013 |  | 2012 |  | 2011
Currently payable |  |  |  |  |  |
Federal |  | $ | 27,587 |  |  | $ | 12,984 |  |  | $ | 5,949 |
State |  | — |  |  | — |  |  | — |
Deferred |  |  |  |  |  |
Federal |  | (2,456 | ) |  | 12,717 |  |  | 22,378 |
State |  | — |  |  | — |  |  | 8,382 |
Valuation allowance |  |  |  |  |  |
Federal |  | — |  |  | — |  |  | — |
State |  | — |  |  | — |  |  | (2,294 | )
Total |  | $ | 25,131 |  |  | $ | 25,701 |  |  | $ | 34,415 |
Schedule of income tax rate reconciliation | The following is a reconciliation of income tax expense to the amount computed at the statutory rate of 35% for the years ended December 31, 2013, 2012 and 2011.
December 31 |  | 2013 |  | 2012 |  | 2011
Statutory federal corporate tax rate |  | 35.0 | % |  | 35.0 | % |  | 35.0 | %
Changes in rates resulting from: |  |  |  |  |  |
Tax exempt interest income, net of disallowed interest |  | (0.8 | )% |  | (0.9 | )% |  | (1.0 | )%
Bank owned life insurance |  | (1.7 | )% |  | (1.6 | )% |  | (1.5 | )%
Tax credits (low income housing) |  | (6.6 | )% |  | (6.1 | )% |  | (5.2 | )%
State income tax expense, net of federal benefit |  | — | % |  | — | % |  | 4.7 | %
Valuation allowance, net of federal benefit |  | — | % |  | — | % |  | (1.3 | )%
Other |  | (1.3 | )% |  | (1.8 | )% |  | (1.2 | )%
Effective tax rate |  | 24.6 | % |  | 24.6 | % |  | 29.5 | %
Reconciliation of unrecognized tax benefits | The following is a reconciliation of the beginning and ending amount of unrecognized tax benefits.
(In thousands) |  | 2013 |  | 2012 |  | 2011
January 1 Balance |  | $ | 517 |  |  | $ | 485 |  |  | $ | 477 |
Additions based on tax positions related to the current year |  | 74 |  |  | 74 |  |  | 70 |
Additions for tax positions of prior years |  | 4 |  |  | 25 |  |  | 1 |
Reductions for tax positions of prior years |  | — |  |  | — |  |  | (3 | )
Reductions due to statute of limitations |  | (77 | ) |  | (67 | ) |  | (60 | )
December 31 Balance |  | $ | 518 |  |  | $ | 517 |  |  | $ | 485 |

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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