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Inventory (Tables) | 12 Months Ended
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Dec. 31, 2021
Inventories [Abstract] |
Schedule of Inventory |
|  | 2021 |  | 2020
Product inventory |  | $ | 535 |  |  | $ | 390 |
Materials, supplies and other |  | 1,013 |  |  | 670 |
|  | $ | 1,548 |  |  | $ | 1,060 |

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