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OCI Net of Tax (Tables) | 9 Months Ended
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Sep. 30, 2021
Statement of Comprehensive Income [Abstract] |
Comprehensive Income (Loss) [Table Text Block] | Other comprehensive income (loss) components, net of income tax, are shown in the following table for the three-month and nine-month periods ended September 30, 2021 and 2020:
(in thousands) |  | Changes in pension plan assets and benefit obligations |  | Unrealized net holding gain (loss) on cash flow hedge |  | Unrealized gains (losses) on debt securities AFS |  | Total
Beginning balance at July 1, 2021 |  | $ | (34,421) |  |  | $ | (460) |  |  | $ | 31,951 |  |  | $ | (2,930) |
| Other comprehensive income (loss) before reclassifications |  | — |  |  | 117 |  |  | (4,997) |  |  | (4,880) |
Net current period other comprehensive income (loss) |  | — |  |  | 117 |  |  | (4,997) |  |  | (4,880) |
Ending balance at September 30, 2021 |  | $ | (34,421) |  |  | $ | (343) |  |  | $ | 26,954 |  |  | $ | (7,810) |
Beginning balance at July 1, 2020 |  | $ | (26,674) |  |  | $ | (922) |  |  | $ | 41,457 |  |  | $ | 13,861 |
| Amounts reclassified from accumulated other comprehensive income |  | — |  |  | — |  |  | 21 |  |  | 21 |
| Other comprehensive income before reclassifications |  | — |  |  | 111 |  |  | 207 |  |  | 318 |
Net current period other comprehensive income |  | — |  |  | 111 |  |  | 228 |  |  | 339 |
Ending balance at September 30, 2020 |  | $ | (26,674) |  |  | $ | (811) |  |  | $ | 41,685 |  |  | $ | 14,200 |
(in thousands) |  | Changes in pension plan assets and benefit obligations |  | Unrealized net holding gain (loss) on cash flow hedge |  | Unrealized gains (losses) on debt securities AFS |  | Total
Beginning balance at January 1, 2021 |  | $ | (34,421) |  |  | $ | (698) |  |  | $ | 40,690 |  |  | $ | 5,571 |
| Other comprehensive income (loss) before reclassifications |  | — |  |  | 355 |  |  | (13,736) |  |  | (13,381) |
Net current period other comprehensive income (loss) |  | — |  |  | 355 |  |  | (13,736) |  |  | (13,381) |
Ending balance at September 30, 2021 |  | $ | (34,421) |  |  | $ | (343) |  |  | $ | 26,954 |  |  | $ | (7,810) |
Beginning balance at January 1, 2020 |  | $ | (26,674) |  |  | $ | (454) |  |  | $ | 17,539 |  |  | $ | (9,589) |
| Amounts reclassified from accumulated other comprehensive income |  | — |  |  | — |  |  | (2,596) |  |  | (2,596) |
| Other comprehensive (loss) income before reclassifications |  | — |  |  | (357) |  |  | 26,742 |  |  | 26,385 |
Net current period other comprehensive (loss) income |  | — |  |  | (357) |  |  | 24,146 |  |  | 23,789 |
Ending balance at September 30, 2020 |  | $ | (26,674) |  |  | $ | (811) |  |  | $ | 41,685 |  |  | $ | 14,200 |
During the three-month and nine-month periods ended September 30, 2021, there were no reclassifications out of accumulated other comprehensive income (loss). During the three-month period ended September 30, 2020, there was $27,000 ($21,000 net of tax) reclassified out of accumulated other comprehensive income due to net losses on the sale of debt securities AFS. During the nine-month period ended September 30, 2020, there was $3.3 million ($2.6 million net of tax) reclassified out of accumulated other comprehensive income due to net gains on the sale of debt securities AFS. These gains were recorded within "Net gain on the sale of debt securities" on the Consolidated Condensed Statements of Income.

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e526-108580 + Details
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- References No definition available. + Details
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