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Long-Term Debt (Tables) | 12 Months Ended
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Dec. 31, 2019
Debt Disclosure [Abstract] |
Long-term Debt | Long-term debt at December 31 was as follows:
| 2019 |  | 2018
| (Dollars in thousands)
Bank debt: |  |  |
Bank revolving loans | $ | — |  |  | $ | — |
U.S. term loans | 760,000 |  |  | 800,000 |
Canadian term loans | 4,703 |  |  | 22,103 |
Other foreign bank revolving and term loans | 31,127 |  |  | 129,697 |
Total bank debt | 795,830 |  |  | 951,800 |
5½% Senior Notes | — |  |  | 300,000 |
4¾% Senior Notes | 300,000 |  |  | 300,000 |
3¼% Senior Notes | 729,755 |  |  | 744,380 |
4⅛% Senior Notes | 400,000 |  |  | — |
Finance leases | 33,288 |  |  | 21,543 |
Total debt - principal | 2,258,873 |  |  | 2,317,723 |
Less unamortized debt issuance costs | 14,452 |  |  | 13,109 |
Total debt | 2,244,421 |  |  | 2,304,614 |
Less current portion | 29,813 |  |  | 170,214 |
| $ | 2,214,608 |  |  | $ | 2,134,400 |
Aggregate Annual Maturities of Debt | The aggregate annual maturities of our debt (non-U.S. dollar debt has been translated into U.S. dollars at exchange rates in effect at the balance sheet date), excluding finance leases, are as follows (dollars in thousands):
2020 | $ | 27,877 |
2021 | 3,250 |
2022 | — |
2023 | — |
2024 | 13,547 |
Thereafter | 2,180,911 |
| $ | 2,225,585 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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