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Supplemental Cash Flow and Non-Cash Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Supplemental Cash Flow Information [Abstract] |
Schedule Of Supplemental Cash Flow and Non-Cash Information | The following is additional information concerning supplemental disclosures of cash payments.
|  | Year ended December 31, |
(in thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Income taxes paid, net |  | $ | 18,071 |  |  | $ | 16,895 |  |  | $ | 48,918 |
Interest paid |  | $ | 9,048 |  |  | $ | 8,347 |  |  | $ | 7,868 |
Non-cash investing activity: |  |  |  |  |  |  |  |  |  |  |  |
Additions to property, plant and equipment in accounts payable |  | $ | 3,164 |  |  | $ | 9,119 |  |  | $ | 6,148 |

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