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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash paid during the year for: |  |  |
Income taxes, net of refunds | $ 11,843 | $ 35,013 | $ 17,406
Interest | 59,040 | 90,291 | 117,775
Non-cash investing activity: |  |  |
Capital expenditures acquired on account but unpaid as of the year end | 6,116 | 16,245 | $ 27,155
Net interest proceeds on swaps designated as net investment hedges | $ 2,307 | $ 4,963 |

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