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Summary of Significant Accounting Policies:Inventory Valuation (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Inventory, Net [Abstract] |  |
Finished goods and work in process | $ 556,123 | $ 431,663
Logs | 50,344 | 35,622
Other raw materials and supplies | 37,903 | 36,195
Inventories | $ 644,370 | $ 503,480

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