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Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2012
Comprehensive Income [Abstract] |
Components Of Comprehensive Income, Net Of Related Tax |
|  | Three Months Ended |
|  | March 31, |
|  | 2012 |  |  | 2011 |
Net income |  | $ | 21,582 |  |  | $ | 17,175 |
Other comprehensive income: |  |  |  |  |  |  |  |
Unrealized (losses) gains on securities: |  |  |  |  |  |  |  |
Arising during the period, net of tax expense (benefit) of $649 and $(48) |  |  | 1,205 |  |  |  | (89 | )
Less: reclassification adjustment for gains included in net income, net of tax expense of $38 and $19 |  |  | (70 | ) |  |  | (35 | )
Pension and postretirement amortization, net of tax expense of $150 and $96 |  |  | 278 |  |  |  | 177 |
Other comprehensive income |  |  | 1,413 |  |  |  | 53 |
Comprehensive income |  | $ | 22,995 |  |  | $ | 17,228 |
Accumulated Balances Related To Each Component Of Other Comprehensive Income (Loss), Net Of Tax |
|  | 2012 |  |  | 2011 |
March 31 |  |  |  |  |  |  |  |
Non-credit related loss on debt securities not expected to be sold |  | $ | (8,600 | ) |  | $ | (8,505 | )
Unrealized net gain (loss) on other available for sale securities |  |  | 6,239 |  |  |  | 4,494 |
Unrecognized pension and postretirement obligations |  |  | (41,374 | ) |  |  | (29,668 | )
Accumulated other comprehensive loss |  | $ | (43,735 | ) |  | $ | (33,679 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 220 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 45 -URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e526-108580 + Details
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