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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales |  | $ 2,443,161 | $ 1,242,760 |  | $ 4,264,477 | $ 2,413,294 |
Income from operations |  | 409,775 | 51,770 |  | 615,036 | 77,317 |
Curtailment of I-joist Production at Roxboro, NC Facility |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  | 15,000 |
Operating Segments [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Income from operations |  | 420,099 | 60,284 |  | 637,370 | 93,349 |
Intersegment Eliminations [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales | [1] | (324,152) | (173,005) |  | (569,948) | (372,529) |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Income from operations |  | (10,324) | (8,514) |  | (22,334) | (16,032) |
Wood Products [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales |  | 270,500 | 108,500 |  | 457,000 | 229,000 |
Wood Products [Member] | Curtailment of I-joist Production at Roxboro, NC Facility |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  | 15,000 |
Other closure-related costs |  |  |  |  |  | 1,700 |
Wood Products [Member] | Operating Segments [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales |  | 594,569 | 281,505 |  | 1,026,904 | 601,566 |
Income from operations |  | 213,761 | 17,074 | [2] | 310,813 | 20,837 | [2]
Building Materials Distribution [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales |  | 2,172,700 | 1,134,300 |  | 3,807,500 | 2,184,300 |
Building Materials Distribution [Member] | Operating Segments [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Sales |  | 2,172,744 | 1,134,260 |  | 3,807,521 | 2,184,257 |
Income from operations |  | $ 206,338 | $ 43,210 |  | $ 326,557 | $ 72,512 |
[1] | Primarily represents intersegment sales from our Wood Products segment to our Building Materials Distribution segment.
[2] | Wood Products segment operating income for the six months ended June 30, 2020, included $15.0 million of accelerated depreciation and $1.7 million of other closure-related costs due to the permanent curtailment of I-joist production at our Roxboro, North Carolina facility. For more information, see Note 5, Curtailment of Manufacturing Facility.

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