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v3.20.4

Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Supplemental disclosures: | (in thousands)
Interest paid | $ | — |  |  | $ | — |  |  | $ | 6 |
Income taxes paid, net | 13,754 |  |  | 2,172 |  |  | 14,979 |
Non-cash investing and financing activities: |  |  |  |  |
Non-cash capital expenditures | 2,843 |  |  | 863 |  |  | 481 |

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