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Segment Sales to External Customers by Product Line (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of Reportable Segments | segment |  | 2 |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | $ 7,926,111 | $ 5,474,838 | $ 4,643,404
Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1] | $ 752,000 | $ 522,800 | $ 505,700
Intersegment EWP Sales Volumes As Percentage to Total EWP Sales Volumes |  | 78.00% | 80.00% | 77.00%
Building Materials Distribution [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | $ 7,174,100 | $ 4,952,000 | $ 4,137,700
Laminated Veneer Lumber [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1],[2] | 4,300 | 18,400 | 39,500
I-joists [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1],[2] | (6,800) | 7,300 | 22,100
Other Engineered Wood Products [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1],[2] | 43,000 | 23,900 | 26,800
Plywood and veneer [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1] | 539,300 | 332,700 | 255,100
Lumber [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1] | 81,800 | 54,700 | 52,500
Byproducts [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1] | 71,200 | 68,600 | 75,100
Other [Member] | Wood Products [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales | [1] | 19,300 | 17,100 | 34,700
Commodity [Member] | Building Materials Distribution [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | 3,704,700 | 2,309,900 | 1,725,400
General line [Member] | Building Materials Distribution [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | 2,164,800 | 1,762,300 | 1,580,700
Engineered wood products [Member] | Building Materials Distribution [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | 1,304,600 | 879,900 | 831,600
Non-US [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Sales |  | $ 128,000 | $ 71,000 | $ 76,000
Customer One [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Sales to external customers [Line Items] |  |  |  |
Concentration Risk, Percentage |  | 12.00% | 11.00% |
[1] | Amounts represent sales to external customers. Sales are calculated after intersegment sales eliminations to our BMD segment.
[2] | Sales of EWP to external customers are net of the cost of all EWP rebates and sales allowances provided at various stages of the supply chain (including distributors, dealers, and homebuilders). For the years ended December 31, 2021, 2020, and 2019, approximately 78%, 80%, and 77%, respectively, of Wood Products' EWP sales volumes were to our BMD segment.

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