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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | [2] | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  | $ 1,472,200 | [1] | $ 1,589,300 | $ 1,242,800 | $ 1,170,500 | [3] | $ 1,101,700 | $ 1,269,500 | $ 1,230,100 | $ 1,042,100 | $ 5,474,838 |  | $ 4,643,404 |  | $ 4,995,290 |
Income (loss) from operations |  | 99,100 | [1] | $ 158,600 | $ 51,800 | 25,500 | [3] | 24,800 | $ 44,900 | $ 45,100 | $ 21,700 | 335,029 |  | 136,459 |  | 72,038 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  | 95,169 |  | 80,141 |  | 146,837 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 79,429 |  | 98,396 |  | 105,469 |
Loss on sale and curtailment of facilities |  |  |  |  |  |  |  |  |  |  |  | 1,707 |  | 0 |  | 38,314 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 15,676 |  | 25,482 |
Assets |  | 1,965,718 |  |  |  |  |  | 1,693,351 |  |  |  | 1,965,718 |  | 1,693,351 |  |  |
BMD Birmingham Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,700 |  |  |
Nashville, Medford, and Cincinnati BMD facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,500 |
Curtailment of I-joist Production at Roxboro, NC Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  |  |  |  |  |  |  | 15,000 |  |  |  |  |
Curtailment of LVL Production at Roxboro, NC Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,000 |
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  |  | 375,214 |  | 170,433 |  | 102,488 |
Intersegment eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales | [4] |  |  |  |  |  |  |  |  |  |  | (801,081) |  | (769,482) |  | (825,682) |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  |  | (40,185) |  | (33,974) |  | (30,450) |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  | 1,568 |  | 1,701 |  | 1,568 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 1,223 |  | 4,214 |  | 771 |
Assets |  | 403,182 |  |  |  |  |  | 289,781 |  |  |  | 403,182 |  | 289,781 |  |  |
Wood Products [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales | [5] |  |  |  |  |  |  |  |  |  |  | 522,800 |  | 505,700 |  | 707,700 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  | 71,141 | [6] | 57,671 |  | 126,989 | [6]
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | $ 38,230 |  | $ 53,460 |  | $ 53,392 |
Intersegment Sales As Percentage to Total Sales |  |  |  |  |  |  |  |  |  |  |  | 61.00% |  | 60.00% |  | 54.00% |
Assets |  | 605,359 |  |  |  |  |  | 635,475 |  |  |  | $ 605,359 |  | $ 635,475 |  |  |
Wood Products [Member] | Curtailment of I-joist Production at Roxboro, NC Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  | 15,000 |  |  |  |  |  | 15,000 |  |  |  |  |
Other closure related costs |  |  |  |  |  | $ 1,700 |  |  |  |  |  | 1,700 |  |  |  |  |
Wood Products [Member] | Curtailment of LVL Production at Roxboro, NC Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated depreciation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,000 |
Accelerated depreciation and other costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 57,800 |
Wood Products [Member] | Loss on sale and curtailment of facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale and curtailment of facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,500 |
Wood Products [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  |  |  | 1,323,901 |  | 1,275,167 |  | 1,533,270 |
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  |  | 127,720 | [7] | 54,197 |  | (10,022) | [7]
Building Materials Distribution [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  |  |  | 4,952,000 |  | 4,137,700 |  | 4,287,600 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  | 22,460 |  | 20,769 |  | 18,280 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 39,976 |  | 40,722 | [8] | 51,306 | [8]
Assets |  | $ 957,177 |  |  |  |  |  | $ 768,095 |  |  |  | 957,177 |  | 768,095 |  |  |
Building Materials Distribution [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  |  |  | 4,952,018 |  | 4,137,719 |  | 4,287,702 |
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  |  | $ 247,494 |  | $ 116,236 |  | $ 112,510 |
[1] | Fourth quarter 2020 results include $6.2 million of pre-tax losses, or $0.12 per share after-tax, from a non-cash pension settlement charge related to the Plan Termination, as discussed in Note 12, Retirement and Benefit Plans. Fourth quarter 2020 results also include $38.8 million, or $0.98 per share, of incremental income tax expense related to the release of stranded tax effects upon Plan Termination, as discussed in Note 4, Income Taxes.
[2] | Third quarter 2020 results include $14.0 million of pre-tax losses on extinguishment of debt, or $0.27 per share after-tax, as we refinanced our senior notes at a lower interest rate with an extended maturity, as discussed in Note 10, Debt.
[3] | First quarter 2020 results include $15.0 million and $1.7 million, respectively, of pre-tax accelerated depreciation and other curtailment related costs, or $0.32 per share after-tax, related to the permanent curtailment of I-joist production at our Roxboro, North Carolina facility, as discussed in Note 6, Curtailment of Manufacturing Facilities.
[4] | Primarily represents intersegment sales from our Wood Products segment to our Building Materials Distribution segment. During 2020, 2019, and 2018, approximately 61%, 60%, and 54%, respectively, of Wood Products' overall sales were to our Building Materials Distribution segment.
[5] | Amounts represent sales to external customers. Sales are calculated after intersegment sales eliminations to our Building Materials Distribution segment, as well as the cost of EWP rebates and sales allowances provided at various stages of the supply chain (including distributors, retail lumberyards, and homebuilders). For the years ended December 31, 2020, 2019, and 2018, approximately 80%, 77%, and 74%, respectively, of Wood Products' EWP sales volumes were to our Building Materials Distribution segment.
[6] | Depreciation and amortization for Wood Products includes $15.0 million and $55.0 million, respectively, of accelerated depreciation to fully depreciate the curtailed I-joist and LVL production assets at our Roxboro, North Carolina facility during first quarter 2020 and fourth quarter 2018, respectively. For more information, see Note 6, Curtailment of Manufacturing Facilities.
[7] | Wood Products segment operating income for the year ended December 31, 2020, includes $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. In addition, Wood Products segment operating loss for the year ended December 31, 2018, includes pre-tax facility impairment and sales related losses of $35.5 million, as well as $57.8 million of accelerated depreciation and other curtailment costs related to the permanent curtailment of LVL production at our Roxboro, North Carolina facility. For more information, see Note 6, Curtailment of Manufacturing Facilities and Note 7, Sale of Manufacturing Facilities.
[8] | Capital spending in 2019 and 2018 for Building Materials Distribution includes $15.7 million and $25.5 million, respectively, for the acquisition of wholesale building material distribution locations. For more information, see Note 8, Acquisitions.

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