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Accumulated Other Comprehensive Loss | 3 Months Ended
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Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss Accumulated other comprehensive loss included the following as of March 31, 2013, December 31, 2012, and March 31, 2012:
| March 31, 2013 |  | December 31, 2012 |  | March 31, 2012
| Accumulated other comprehensive income (loss) |  | Deferred tax expense (benefit) |  | Accumulated other comprehensive income (loss), net of tax |  | Accumulated other comprehensive income (loss) |  | Deferred tax expense (benefit) |  | Accumulated other comprehensive income (loss), net of tax |  | Accumulated other comprehensive income (loss) |  | Deferred tax expense (benefit) |  | Accumulated other comprehensive income (loss), net of tax
Unrealized gains on investment securities available for sale | $ | 32,333 |  |  | $ | 12,727 |  |  | $ | 19,606 |  |  | $ | 33,809 |  |  | $ | 13,292 |  |  | $ | 20,517 |  |  | $ | 23,667 |  |  | $ | 9,327 |  |  | $ | 14,340 |
Funded status of defined benefit plan | (154,030 | ) |  | (60,318 | ) |  | (93,712 | ) |  | (158,334 | ) |  | (62,003 | ) |  | (96,331 | ) |  | (122,465 | ) |  | (47,957 | ) |  | (74,508 | )
Unrealized loss on cash flow hedge | (9,583 | ) |  | (3,784 | ) |  | (5,799 | ) |  | (10,398 | ) |  | (4,106 | ) |  | (6,292 | ) |  | (10,325 | ) |  | (4,077 | ) |  | (6,248 | )
Total | $ | (131,280 | ) |  | $ | (51,375 | ) |  | $ | (79,905 | ) |  | $ | (134,923 | ) |  | $ | (52,817 | ) |  | $ | (82,106 | ) |  | $ | (109,123 | ) |  | $ | (42,707 | ) |  | $ | (66,416 | )
|  | Gains and losses on cash flow hedges 1 |  | Unrealized gains and losses on available-for-sale securities 1 |  | Defined benefit pension items 1 |  | Total
Three months ended March 31, 2013 |  |  |  |  |  |  |  |
Beginning balance |  | $ | (6,292 | ) |  | $ | 20,517 |  |  | $ | (96,331 | ) |  | $ | (82,106 | )
Other comprehensive income before reclassifications |  | 1 |  |  | (876 | ) |  | — |  |  | (875 | )
Amounts reclassified from accumulated other comprehensive income |  | 492 |  |  | (35 | ) |  | 2,619 |  |  | 3,076 |
Net current period other comprehensive income |  | 493 |  |  | (911 | ) |  | 2,619 |  |  | 2,201 |
Ending balance |  | $ | (5,799 | ) |  | $ | 19,606 |  |  | $ | (93,712 | ) |  | $ | (79,905 | )
Three months ended March 31, 2012 |  |  |  |  |  |  |  |
Beginning balance |  | $ | (6,483 | ) |  | $ | 16,115 |  |  | $ | (76,206 | ) |  | $ | (66,574 | )
Other comprehensive income before reclassifications |  | (218 | ) |  | (1,775 | ) |  | — |  |  | (1,993 | )
Amounts reclassified from accumulated other comprehensive income |  | 453 |  |  | — |  |  | 1,698 |  |  | 2,151 |
Net current period other comprehensive income |  | 235 |  |  | (1,775 | ) |  | 1,698 |  |  | 158 |
Ending balance |  | $ | (6,248 | ) |  | $ | 14,340 |  |  | $ | (74,508 | ) |  | $ | (66,416 | )
1 All amounts are net of tax. Amounts in parentheses indicate debits.
Details about accumulated other comprehensive income |  | Amount reclassified from accumulated other comprehensive income 1 |  | Affected line item in the statement where net income is presented
Three months ended March 31, 2013 |  |
Gains and losses on cash flow hedges |  |  |  |
Interest rate contracts |  | $ | (813 | ) |  | Long-term obligations
|  | 321 |  |  | Income taxes
|  | $ | (492 | ) |  | Net of tax
Unrealized gains and losses on available for sale securities |  |  |  |
|  | $ | 58 |  |  | Securities gains (losses)
|  | (23 | ) |  | Income taxes
|  | 35 |  |  | Net of tax
Amortization of defined benefit pension items |  |  |  |
Prior service costs |  | $ | (52 | ) |  | Employee Benefits
Actuarial gains |  | (4,252 | ) |  | Employee Benefits
|  | (4,304 | ) |  | Total before taxes
|  | 1,685 |  |  | Income taxes
|  | $ | (2,619 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (3,076 | ) |  |
Three months ended March 31, 2012 |  |
Gains and losses on cash flow hedges |  |  |  |
Interest rate contracts |  | $ | (749 | ) |  | Long-term obligations
|  | 296 |  |  | Income taxes
|  | (453 | ) |  | Net of tax
Amortization of defined benefit pension items |  |  |  |
Prior service costs |  | $ | (53 | ) |  | Employee Benefits
Actuarial gains |  | (2,737 | ) |  | Employee Benefits
|  | (2,790 | ) |  | Total before taxes
|  | 1,092 |  |  | Income taxes
|  | $ | (1,698 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (2,151 | ) |  |
1 Amounts in parentheses indicate debits to profit/loss.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14-26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e709-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669619-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e689-108580 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e716-108580 + Details
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