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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 10-K

☒ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended | December 31, 2020
☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to

Commission File Number: 001-35805
Boise Cascade Company
(Exact name of registrant as specified in its charter)

Delaware | 20-1496201
(State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.)

1111 West Jefferson Street
Suite 300
Boise, Idaho 83702-5389
(Address of principal executive offices) (Zip Code)
(208) 384-6161
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class | Trading Symbol(s) | Name of Each Exchange on Which Registered
Common Stock, $0.01 par value per share | BCC | New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No o
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No x
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer x Accelerated filer o
Non-accelerated filer o Smaller reporting company ☐
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange
Act. o
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. x
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No x
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant on June 30, 2020, the last business day of the registrant's most recently completed second fiscal quarter, based on the last reported trading price of the registrant's common stock on the New York Stock Exchange was approximately $1,462 million.
There were 39,202,927 shares of the registrant's common stock, $0.01 par value per share, outstanding on February 12, 2021.
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s Proxy Statement for its 2021 annual meeting of stockholders are incorporated by reference into Part III of this Form 10-K.

Table of Contents
Table of Contents

PART I
Item 1. |  | Business |  | 2 |  |
Item 1A. |  | Risk Factors |  | 20 |  |
Item 1B. |  | Unresolved Staff Comments |  | 29 |  |
Item 2. |  | Properties |  | 29 |  |
Item 3. |  | Legal Proceedings |  | 29 |  |
Item 4. |  | Mine Safety Disclosures |  | 29 |  |
PART II
Item 5. |  | Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities |  | 30 |  |
Item 6. |  | Selected Financial Data |  | 31 |  |
Item 7. |  | Management's Discussion and Analysis of Financial Condition and Results of Operations |  | 34 |  |
|  | Understanding Our Financial Information |  | 34 |  |
|  | Overview |  | 34 |  |
|  | Factors That Affect Our Operating Results and Trends |  | 35 |  |
|  | Our Operating Results |  | 38 |  |
|  | Income Tax Provision |  | 44 |  |
|  | Industry Mergers and Acquisitions |  | 44 |  |
|  | Liquidity and Capital Resources |  | 45 |  |
|  | Contractual Obligations |  | 49 |  |
|  | Off-Balance Sheet Arrangements |  | 50 |  |
|  | Guarantees |  | 50 |  |
|  | Seasonal Influences |  | 50 |  |
|  | Disclosures of Financial Market Risks |  | 50 |  |
|  | Financial Instruments |  | 51 |  |
|  | Environmental |  | 52 |  |
|  | Critical Accounting Estimates |  | 54 |  |
|  | New and Recently Adopted Accounting Standards |  | 55 |  |
Item 7A. |  | Quantitative and Qualitative Disclosures About Market Risk |  | 55 |  |
Item 8. |  | Financial Statements and Supplementary Data |  | 56 |  |
|  | Notes to Consolidated Financial Statements |  | 62 |  |
|  | 1. Nature of Operations and Basis of Presentation |  | 62 |  |
|  | 2. Summary of Significant Accounting Policies |  | 62 |  |
|  | 3. Revenues |  | 68 |  |
|  | 4. Income Taxes |  | 69 |  |
|  | 5. Net Income Per Common Share |  | 72 |  |
|  | 6. Curtailment of Manufacturing Facilities |  | 72 |  |
|  | 7. Sale of Manufacturing Facilities |  | 73 |  |
|  | 8. Acquisitions |  | 73 |  |

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|  | 9. Goodwill and Intangible Assets |  | 73 |  |
|  | 10. Debt |  | 74 |  |
|  | 11. Leases |  | 77 |  |
|  | 12. Retirement and Benefit Plans |  | 78 |  |
|  | 13. Long-Term Incentive Compensation Plans |  | 84 |  |
|  | 14. Stockholders' Equity |  | 87 |  |
|  | 15. Transactions with Related Party |  | 88 |  |
|  | 16. Financial Instrument Risk |  | 89 |  |
|  | 17. Segment Information |  | 89 |  |
|  | 18. Commitments, Legal Proceedings and Contingencies, and Guarantees |  | 92 |  |
|  | 19. Quarterly Results of Operations (unaudited) |  | 93 |  |
|  | Reports of Independent Registered Public Accounting Firm |  | 94 |  |
Item 9. |  | Changes In and Disagreements With Accountants on Accounting and Financial Disclosure |  | 97 |  |
Item 9A. |  | Controls and Procedures |  | 97 |  |
Item 9B. |  | Other Information |  | 98 |  |
PART III
Item 10. |  | Directors, Executive Officers, and Corporate Governance |  | 99 |  |
Item 11. |  | Executive Compensation |  | 99 |  |
Item 12. |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters |  | 99 |  |
Item 13. |  | Certain Relationships and Related Transactions, and Director Independence |  | 99 |  |
Item 14. |  | Principal Accountant Fees and Services |  | 99 |  |
PART IV
Item 15. |  | Exhibits and Financial Statement Schedules |  | 100 |  |
|  | Index to Exhibits |  | 101 |  |
|  | Signatures |  | 106 |  |

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Cautionary Statement Concerning Forward-Looking Statements
Certain statements made in this Form 10-K contain forward-looking statements. Forward-looking statements are subject to risks and uncertainties that may cause our actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by these forward-looking statements. Forward-looking statements include information concerning our future financial performance, business strategy, plans, goals, and objectives.
Statements preceded or followed by, or that otherwise include, the words "believes," "expects," "anticipates," "intends," "project," "targets," "estimates," "plans," "forecast," "is likely to," and similar expressions or future or conditional verbs such as "will," "may," "would," "should," and "could" are generally forward-looking in nature and not historical facts. Such statements are based upon the current beliefs and expectations of our management and are subject to significant risks and uncertainties. Actual results may differ materially from those set forth in the forward-looking statements.
The following factors, among others, could cause our actual results, performance, or achievements to differ from those set forth in the forward-looking statements:
•The duration and magnitude of impacts of the COVID-19 pandemic;
•The commodity nature of our products and their price movements, which are driven largely by industry capacity and operating rates, industry cycles that affect supply and demand, and net import and export activity;
•General economic conditions, including but not limited to housing starts, repair-and-remodeling activity, light commercial construction, inventory levels of new and existing homes for sale, foreclosure rates, interest rates, unemployment rates, household formation rates, prospective home buyers’ access to and cost of financing, and housing affordability, that ultimately affect demand for our products;
•The highly competitive nature of our industry;
•Disruptions to information systems used to process and store customer, employee, and vendor information, as well as the technology that manages our operations and other business processes;
•Material disruptions and/or major equipment failure at our manufacturing facilities;
•Concentration of our sales among a relatively small group of customers, as well as the financial condition and creditworthiness of our customers;
•Product shortages, loss of key suppliers, and our dependence on third-party suppliers and manufacturers;
•Labor disruptions, shortages of skilled and technical labor, or increased labor costs;
•The need to successfully formulate and implement succession plans for key members of our management team;
•Impairment of our long-lived assets, goodwill, and/or intangible assets;
•Cost and availability of raw materials, including wood fiber and glues and resins;
•Cost of compliance with government regulations, in particular environmental regulations;
•Our ability to successfully and efficiently complete and integrate acquisitions;
•Declines in demand for our products due to competing technologies or materials, as well as changes in building code provisions;
•Substantial ongoing capital investment costs, including those associated with acquisitions, and the difficulty in offsetting fixed costs related to those investments;
•The cost and availability of third-party transportation services used to deliver the goods we manufacture and distribute, as well as our raw materials;
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•Exposure to product liability, product warranty, casualty, construction defect, and other claims;
•Our indebtedness, including the possibility that we may not generate sufficient cash flows from operations or that future borrowings may not be available in amounts sufficient to fulfill our debt obligations and fund other liquidity needs;
•Restrictive covenants contained in our debt agreements; and
•Fluctuations in the market for our equity.
Certain of these and other factors are discussed in more detail in "Item 1A. Risk Factors" of this Form 10-K. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this Form 10-K. While we believe that our forecasts and assumptions are reasonable, we caution that actual results may differ materially. If one or more of these or other risks or uncertainties materialize, or if our underlying assumptions prove to be incorrect, actual results may vary materially from what we projected. Consequently, actual events and results may vary significantly from those included in or contemplated or implied by our forward-looking statements.
PART I
ITEM 1. BUSINESS
Boise Cascade is one of the largest producers of engineered wood products (EWP) and plywood in North America and a leading U.S. wholesale distributor of building products. As used in this Form 10-K, the terms "Boise Cascade," "we," and "our" refer to Boise Cascade Company and its consolidated subsidiaries.
Our Purpose and Values
Purpose
As a leading manufacturer and distributor of building materials, we bring people, products, and services together to build strong homes, businesses, and communities that stand the test of time.
Our Shared Values
At Boise Cascade, we truly care about relationships with our teammates, customers, suppliers, shareholders, and the communities where we operate. We approach the way we do business with these core values:
•Integrity - We are our word. Integrity goes beyond the lasting structural strength of our products; it is our uncompromising commitment to do the right thing. We nurture long-term relationships every day, in everything we do.
•Safety - We each have the responsibility for our own safety and the safety of those around us, both at work and at home. Together, we strive to create an injury-free environment by identifying risks, eliminating hazards, and requiring safe behaviors.
•Respect - We cultivate a climate of mutual respect, camaraderie, and teamwork. We welcome diverse backgrounds, views, and skills because we believe it results in stronger teams, inspired solutions, and greater agility as an organization.
•Pursuit of Excellence - We are committed to the continuous improvement of people, processes, and the quality of products that we deliver. We apply best practices in our environmental management and forest stewardship. We all have the autonomy to apply our knowledge and experience to solve problems, make decisions, and implement new ideas to drive sustainable results.
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Segment Overview
Our two reportable segments, Wood Products and Building Materials Distribution, operate with a high degree of vertical integration. In our Wood Products segment, we manufacture laminated veneer lumber (LVL), I-joists, and laminated beams, which are collectively referred to as EWP. In addition, we manufacture structural, appearance, and industrial plywood panels, and ponderosa pine lumber. Our Building Materials Distribution segment (BMD) is the largest customer of our Wood Products segment, and operates a nationwide network of distribution facilities that sell a broad line of building materials, including oriented strand board (OSB), plywood, and lumber (collectively referred to as commodities); general line items such as siding, composite decking, doors, metal products, insulation, and roofing; and EWP. Substantially all of BMD's EWP is sourced from our Wood Products segment, with the remaining products we distribute sourced from a broad vendor base of third-party suppliers ranging from large manufacturers to small regional producers.
Our products are used in the construction of new residential housing, including single-family, multi-family, and manufactured homes, the repair-and-remodeling of existing housing, the construction of light industrial and commercial buildings, and industrial applications. We have a broad base of national and local customers, which includes a diverse mix of retail lumberyards, home improvement centers, leading wholesalers, specialty distributors, and industrial converters. Drivers of new residential construction, residential repair-and-remodeling activity, and light commercial construction include new household formation, the age of the housing stock, availability of credit and other macroeconomic factors, such as GDP growth, population growth and migration, interest rates, employment, and consumer sentiment.
The map below presents our network of manufacturing and distribution facilities.
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Our Business Strategies
Increase Both Our Earnings and Earnings Stability
We intend to increase both our earnings and earnings stability by growing our EWP sales and expanding our distribution capabilities. In Wood Products, we are principally focused on the production of veneer-based products. We have grown our EWP sales and thereby diverted more of our internally produced veneer away from plywood, which is a product line exposed to oriented strand board substitution and significant price volatility. In addition, we have divested of assets that we considered to be non-strategic or where we believed we were unlikely to generate a sufficient return on invested capital in the future. In BMD, our growth strategy includes adding products and services, expanding our market penetration via acquisition or opening new locations in under-served markets, and identifying and executing upon adjacent distribution platforms that can be scaled. Doors provides a recent example of product line expansion in BMD. In 2020 we expanded our door shop operations with the addition of assembly equipment in Dallas, Texas, and have announced plans to start up our ninth door shop assembly operation in Houston, Texas, in the second half of 2021.
The change in our sales mix by segment over time from reducing our product mix in Wood Products and expanding our BMD distribution capabilities is illustrated below.
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Wood Products' change in sales mix by product line over time is illustrated below.
The charts below illustrate our growth in EWP and how we have transitioned more of our veneer usage to support our EWP growth.
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In BMD, we have grown by adding products and services, capturing additional market share in many of our existing markets, expanding our market presence via acquisition or start-up of new locations, and by identifying and executing upon adjacent distribution platforms. BMD carries a broad line of building materials used in residential construction, repair and remodel, and industrial applications. The chart below reflects BMD's sales mix by product for the year ended December 31, 2020.
BMD's growth in sales dollars and sales per U.S. housing start are reflected in the chart below.
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A map of BMD's distribution locations is shown below. The red stars are BMD's locations, the size of the circles indicate the level of residential construction activity in that trade area (Core-Based Statistical Area or CBSA), and the color of the circles indicate how close our distribution centers are to each major trade area. During 2018 and 2019, we acquired wholesale building material distribution locations in Nashville, Tennessee; Medford, Oregon; Cincinnati, Ohio; and Birmingham, Alabama. In addition, we opened a new distribution center in St. Louis, Missouri, during 2017.
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Leverage our Integrated Model
We believe our vertically-integrated business model provides us with advantages over less integrated competitors and provides unique and significant value to our customers. Wood Products enjoys superior access to the market through a committed distributor, BMD benefits from a committed manufacturing partnership, and we capture margin at both levels of the supply chain. From 2016 to 2020, Wood Products sales volumes of EWP to BMD grew from 66% to 80%, and plywood sales volumes to BMD declined slightly from 28% to 24%. The chart below reflects the progress we have made in distributing internally produced products through our distribution network.
Drive Operational Excellence
In Wood Products, we use process improvement and machine reliability methodologies to continuously refine and improve our operations and processes. We believe there are opportunities to further apply these process improvement programs in our manufacturing operations and apply similar techniques and methods to different functional areas to realize efficiencies in those areas.
In BMD, we believe our highly efficient logistics system allows us to deliver superior customer service and assist our customers in optimizing their working capital. In order to assess the effectiveness and efficiency of our operations, we regularly capture and report upon a wide variety of investment, operational, and customer service metrics. Key learnings and best practices are then leveraged across our distribution locations.
Accelerate Pace of Innovation, Digital Technology, and Diversity & Inclusion
The Company is actively pursuing additional initiatives that we believe will provide further avenues for revenue and earnings growth:
Innovation - We are actively engaged in product development opportunities in our Wood Products segment. These opportunities include the development of new products for new residential construction or commercial construction applications. The commercial construction segment is a particular area of focus for us given we have limited penetration in that space today, and recent changes in building codes that allow for the use of mass timber in tall wood structures provide further opportunity. Innovation efforts within our Wood Products segment are also focused on identifying process and cost efficiency improvement opportunities, some of which will include further automation within our manufacturing operations. To support our innovation initiatives, we have added dedicated resources and are also leveraging tools to capture ideas from associates across our organization.
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Digital Technology - Like many companies, we use multiple systems to manage our business. This can mean that critical business data is not in one central and easily accessible location. As such, we have undertaken a project that will bring much of our primary business data into a single repository that, when combined with a robust reporting engine, will allow us to quickly access and analyze the information. Ultimately, we expect the project to result in the development of business use cases that will provide revenue generating, cost reducing, and risk mitigating opportunities.
Diversity & Inclusion - In alignment with our core values, we strive to cultivate a climate of mutual respect, camaraderie, and teamwork. We welcome diverse backgrounds, views, and skills because we believe it results in stronger teams, inspired solutions, greater agility as an organization, and ultimately a more sustainable and profitable business model over time. At the same time, we also recognize that shifting demographics, a changing talent market, and a competitive business environment make a compelling case for us to be even more intentional in creating a diverse and inclusive work environment. As such, we have hired a Director of Diversity and Inclusion, supported by our executive leadership team and a steering committee composed of associates from across the Company. Our ongoing efforts have placed additional focus on diversity and inclusion to develop an iterative framework of education and training, strategy development, and implementation that will be shared with all levels of our organization.
Segment Detail
Wood Products
Products
LVL and laminated beams are structural products used in applications where extra strength and consistent quality are required, such as headers and beams. LVL is also used in the manufacture of I-joists, which are assembled by combining a vertical web of OSB with top and bottom LVL or solid wood flanges. I-joists, which are used primarily in residential and commercial flooring and roofing systems and other structural applications, are stronger, lighter, and straighter than conventional lumber joists. Plywood is used in a wide range of structural, interior, and exterior applications within the residential, industrial, and repair and remodel sectors. We also produce ponderosa pine shop lumber which is sold primarily to industrial converters, and ponderosa pine appearance grade boards that are sold to home centers and retail lumber yards.
In November 2018, we sold our sole particleboard plant and two lumber mills located in Northeast Oregon, consistent with our strategy to focus on veneer-based manufacturing. In addition, we sold a hardwood plywood facility located in Moncure, North Carolina (the Moncure Sale) in March 2019. Moncure was our only hardwood plywood facility and was no longer integrated with our EWP system upon the Roxboro LVL closure noted below. For additional information, see Note 7, Sale of Manufacturing Facilities, of the Notes to the Consolidated Financial Statements in "Item 8, Financial Statements and Supplementary Data" of this Form 10-K.
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The following table sets forth the annual capacity, production volumes, and sales volumes of our principal products for the periods indicated:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016
|  | (millions)
Capacity (a) |  |  |  |  |  |  |  |  |  |
LVL (cubic feet) (b)(c) |  | 34.0 |  |  | 34.0 |  |  | 33.5 |  |  | 35.5 |  |  | 34.5 |
Plywood and Parallel Laminated Veneer (PLV) (sq. ft.) (3/8" basis) (d)(e) |  | 2,230 |  |  | 2,230 |  |  | 2,440 |  |  | 2,440 |  |  | 2,400 |
Production Volumes |  |  |  |  |  |  |  |  |  |
LVL (cubic feet) (b) |  | 26.0 |  |  | 25.6 |  | 27.6 |  |  | 26.2 |  |  | 23.9 |
I‑joists (equivalent lineal feet) (b) |  | 237 |  |  | 215 |  |  | 253 |  |  | 228 |  |  | 225 |
Plywood and PLV (sq. ft.) (3/8" basis) (d) |  | 1,637 |  |  | 1,668 |  |  | 1,822 |  |  | 1,828 |  |  | 1,852 |
Sales Volumes |  |  |  |  |  |  |  |  |  |
LVL (cubic feet) (f) |  | 17.3 |  |  | 17.9 |  |  | 17.7 |  |  | 17.3 |  |  | 16.3 |
I-joists (equivalent lineal feet) |  | 241 |  |  | 227 |  |  | 237 |  |  | 235 |  |  | 226 |
Plywood (sq. ft.) (3/8" basis) (g) |  | 1,253 |  |  | 1,337 |  |  | 1,423 |  |  | 1,458 |  |  | 1,507 |

_______________________________________
(a)Estimated annual capacity at the end of each year based on machinery capabilities.
(b) During the years presented above, approximately one-third of the LVL we produced was utilized internally to produce I-joists. Capacity is based on LVL production only.
(c) In March 2016, we purchased two EWP facilities, one in Thorsby, Alabama, and one in Roxboro, North Carolina. Thorsby LVL capacity is estimated at 4.5 million cubic feet. We ceased LVL production at Roxboro in November 2018, prior to which its estimated annual capacity was 2.0 million cubic feet. I-joist production at Roxboro was ceased in March 2020. For additional information regarding the Roxboro curtailments, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to the Consolidated Financial Statements in "Item 8, Financial Statements and Supplementary Data" of this Form 10-K.
(d) Approximately 27%, 23%, 24%, 22%, and 21%, respectively, of production in 2020, 2019, 2018, 2017, and 2016 was for PLV panels that are utilized internally to produce LVL.
(e) The years 2016-2018 include 135 million square feet of plywood capacity related to the Moncure facility that was sold in March 2019.
(f) Excludes LVL produced and used as flange stock in the manufacture of I-joists.
(g) Excludes PLV produced and used in the manufacture of LVL.
The following table sets forth segment sales, segment income (loss), depreciation and amortization, and EBITDA for the periods indicated:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016
|  | (millions)
Segment sales (a) |  | $ | 1,323.9 |  |  | $ | 1,275.2 |  |  | $ | 1,533.3 |  |  | $ | 1,373.8 |  |  | $ | 1,280.4 |
Segment income (loss) (b) (c) |  | $ | 127.7 |  |  | $ | 54.2 |  |  | $ | (10.0) |  |  | $ | 53.6 |  |  | $ | 25.9 |
Segment depreciation and amortization (c) |  | 71.1 |  |  | 57.7 |  |  | 127.0 |  |  | 63.1 |  |  | 57.5 |
Segment EBITDA (b) (d) |  | $ | 198.9 |  |  | $ | 111.9 |  |  | $ | 117.0 |  |  | $ | 116.7 |  |  | $ | 83.5 |

_______________________________________
(a) Segment sales are calculated before elimination of sales to our Building Materials Distribution segment.
(b) During the year ended December 31, 2018, we recorded a pre-tax loss of $11.5 million related to the sale of two lumber mills and a particleboard plant in Northeast Oregon, as well as a pre-tax impairment loss of $24.0 million on the Moncure plywood facility
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upon being classified as held for sale. For additional information, see Note 7, Sale of Manufacturing Facilities, of the Notes to the Consolidated Financial Statements in "Item 8, Financial Statements and Supplementary Data" of this Form 10-K.
(c) The year ended December 31, 2018 includes $55.0 million of accelerated depreciation, $2.6 million of construction in progress and spare parts write-offs, and $0.2 million of severance expenses related to the Roxboro LVL curtailment in November 2018. The year ended December 31, 2020 includes $15.0 million of accelerated depreciation and $1.7 million of other closure costs related to the Roxboro I-joist curtailment in March 2020. For additional information regarding the Roxboro curtailments, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to the Consolidated Financial Statements in "Item 8, Financial Statements and Supplementary Data" of this Form 10-K.
(d) Segment EBITDA is calculated as segment income (loss) before depreciation and amortization. See "Item 6. Selected Financial Data" of this Form 10-K for a description of our reasons for using EBITDA and for a discussion of the limitations of such a measure.
Facilities
Our Wood Products segment operates five EWP facilities. Our two most significant EWP facilities are located in Louisiana and Oregon and have a high degree of raw material and manufacturing integration with our neighboring plywood and veneer facilities. We also operate eight plywood and veneer plants, as well as two sawmills.
Raw Materials and Input Costs
Wood fiber. Wood fiber is the primary raw material used in our Wood Products operations, and our primary source of wood fiber is logs. For the year ended December 31, 2020, wood fiber accounted for approximately 42% of materials, labor, and other operating expenses (excluding depreciation) in our Wood Products segment. Our EWP facilities use parallel-laminated veneer panels and veneer sheets produced by our facilities, as well as lumber, OSB, and veneer sheets purchased from third parties, to manufacture LVL, I-joists, and laminated beams. Our EWP, plywood, and veneer facilities use Douglas fir, white woods, and pine logs as raw materials. Our manufacturing facilities are located in close proximity to active wood fiber markets.
Logs comprised approximately 73% of our wood fiber costs during 2020, and we satisfy our log requirements through a combination of purchases under supply agreements, open-market purchases, and purchases pursuant to contracts awarded under public auctions.
Approximately 84% of our log supply in 2020 was supplied through purchases from private land owners or through dealers. We also bid in auctions conducted by federal, state, and local authorities for the purchase of logs, generally at fixed prices, under contracts with terms of generally one to three years.
Our log requirements and our access to supply, as well as the cost of obtaining logs, are subject to change based on, among other things, the availability of logs in each of our operating areas, our operating schedules, competition from other manufacturers, the effect of governmental laws and regulations, impacts of weather or fire on log availability, and the status of environmental appeals. Per-unit log costs in the western U.S. are higher than per-unit log costs in the southern U.S. due to higher harvest and delivery costs, as well as various supply-side constraints, including seasonal weather-related restrictions, slower growth cycles, and a higher proportion of federal and state timberland ownership. Our aggregate cost of obtaining logs is also affected by fuel costs and the distance of the log source from our facilities, as we are often required to arrange for harvesting and delivery of the logs we purchase from the source to our facilities. For a discussion of contractual commitments relating to log supply agreements, see "Contractual Obligations" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
We also purchase OSB, which is used as the vertical web to assemble I-joists, from a supplier with multiple locations throughout North America. OSB accounted for approximately 7% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation) for our Wood Products segment in 2020. OSB is a commodity, and prices have been historically volatile in response to industry capacity and operating rates, inventory levels in various distribution channels, and seasonal demand patterns. Sustained periods of high OSB costs lead to higher costs of our I-joist production.
Wood fiber also includes, to a lesser extent than OSB, lumber purchased from third parties for I-joist production at our Canadian EWP facility and for production at our laminated beam plant in Idaho. Lumber input costs are subject to similar commodity-based volatility characteristics noted above for OSB.
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Other raw materials and energy costs. We use a significant quantity of various resins and glues in our manufacturing processes. Resin and glue product costs are influenced by changes in the prices of raw material input costs, primarily fossil fuel products. We purchase resins and glues, other raw materials, and energy used to manufacture our products in both the open market and through supply contracts. The contracts are generally with regional suppliers who agree to supply all of our needs for a certain raw material or energy within the applicable region. These contracts have terms of various lengths and typically contain price adjustment mechanisms that take into account changes in market prices.
Sales, Marketing, and Distribution
Our EWP sales force is managed centrally through a main office that oversees regional sales teams. Our sales force spends a significant amount of time working with end customers who purchase our EWP. Our sales force provides a variety of technical support services, including integrated design, engineering, product specification software, distributor inventory management software, and job-pack preparation systems. Sales of plywood are managed centrally from our headquarters.
In 2020, EWP and plywood, accounted for 55% and 34%, respectively, of our Wood Products sales. The majority of our wood products are sold to leading wholesalers (including our Building Materials Distribution segment), home improvement centers, retail lumberyards, and industrial converters in North America. Our Building Materials Distribution segment is our Wood Products segment's largest customer, representing approximately 61% of our Wood Products segment's overall sales in 2020. In 2020, 80% and 24%, of our Wood Products segment's EWP and plywood sales volumes, respectively, were to our Building Materials Distribution segment.
Building Materials Distribution
Products
We sell a broad line of building materials; including OSB, plywood, and lumber (collectively commodities), general line items such as siding, composite decking, doors, metal products, insulation, and roofing, and EWP. Except for EWP, we purchase most of these building materials from a broad base of third-party suppliers ranging from large manufacturers, such as James Hardie Building Products, Trex Company, Huber Engineered Woods, and Louisiana-Pacific Corporation, to small regional producers. Substantially all of our EWP is sourced from our Wood Products segment. Our products are used in the construction of new residential housing, including single-family, multi-family, and manufactured homes, the repair-and-remodeling of existing housing, the construction of light industrial and commercial buildings, and other industrial applications.
The following table lists our product line sales mix for the periods indicated:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016
| (percentage of Building Materials Distribution sales)
Commodity | 46.6 | % |  | 41.7 | % |  | 48.3 | % |  | 47.9 | % |  | 46.6 | %
General line | 35.6 | % |  | 38.2 | % |  | 33.1 | % |  | 33.6 | % |  | 35.4 | %
Engineered wood products | 17.8 | % |  | 20.1 | % |  | 18.6 | % |  | 18.5 | % |  | 18.0 | %

The following table sets forth segment sales, income, depreciation and amortization, and EBITDA for the periods indicated:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016
|  | (millions)
Segment sales |  | $ | 4,952.0 |  |  | $ | 4,137.7 |  |  | $ | 4,287.7 |  |  | $ | 3,773.8 |  |  | $ | 3,227.2 |
Segment income |  | $ | 247.5 |  |  | $ | 116.2 |  |  | $ | 112.5 |  |  | $ | 116.8 |  |  | $ | 84.4 |
Segment depreciation and amortization |  | 22.5 |  |  | 20.8 |  |  | 18.3 |  |  | 15.5 |  |  | 13.8 |
Segment EBITDA (a) |  | $ | 270.0 |  |  | $ | 137.0 |  |  | $ | 130.8 |  |  | $ | 132.3 |  |  | $ | 98.1 |

_______________________________________
(a) Segment EBITDA is calculated as segment income before depreciation and amortization. See "Item 6. Selected Financial Data" of this Form 10-K for a description of our reasons for using EBITDA and for a discussion of the limitations of such a measure.
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Facilities
Our Building Materials Distribution segment operates a nationwide network of 38 building materials distribution facilities throughout the U.S. and also operates a single component manufacturing plant. Our broad geographic presence reduces our exposure to market factors in any single region. During 2018 and 2019, we acquired wholesale building material distribution locations in Nashville, Tennessee; Medford, Oregon; Cincinnati, Ohio; and Birmingham, Alabama. These locations complement our existing distribution business and strengthen our nationwide presence. In addition, we believe we will be able to broaden our product and service offerings within those markets. For further discussion on acquisitions, see Note 8, Acquisitions, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10‑K.
Sales, Marketing, and Distribution
We market our building materials primarily to retail lumberyards, home improvement centers, and specialty distributors that then sell the products to end customers, who are typically homebuilders, independent contractors, and homeowners engaged in residential construction and repair-and-remodeling projects. We also market our products to a wide variety of industrial accounts, which use our products to assemble cabinets, doors, agricultural bins, crating, and other products used in industrial and construction applications.
We believe that our national presence and long-standing relationships with many of our key suppliers allow us to obtain favorable price and term arrangements and offer excellent customer service on leading brands in the building materials industry. We also believe our broad product line provides our customers with an efficient, one-stop resource for their building materials needs. We also have expertise in special-order sourcing and merchandising support, which is a key service for our home improvement center customers that choose not to stock certain items in inventory.
We sell products through two primary distribution channels: warehouse sales and direct sales. Warehouse sales are delivered from our distribution centers to our customers and direct sales are shipped from the manufacturer to the customer without us taking physical possession of inventory. Each of our distribution centers implements its own distribution and logistics model using centralized information systems. We use internal and external trucking resources to deliver materials on a regularly scheduled basis. Our highly efficient logistics system allows us to deliver superior customer service and assist our customers in optimizing their working capital.
We have a large, decentralized sales force to support our suppliers and customers. Our sales force and product managers have local product knowledge and decision-making authority, which we believe enables them to optimize stocking, pricing, and product assortment decisions. Our sales force has access to centralized information technology systems, an extensive vendor base, and corporate-level working capital support, which we believe complements our localized sales model.
We regularly evaluate opportunities to introduce new products. Broadening our product offering helps us serve as a one-stop resource for building materials, which we believe improves our customers' purchasing and operating efficiencies. The introduction of new products is primarily driven by customer demand or product extensions originating from our vendors. We believe our long-standing customer and vendor relationships allow us to respond to customer feedback and introduce new products more rapidly. Broadening our product offering also helps us drive additional products through our distribution system, thereby increasing our scale and efficiency.
Customers
Our customer relationships range from locally owned single-location facilities to the largest national home improvement center and retail lumberyard chains across the U.S., with Home Depot and Builders FirstSource being our largest customers. Sales to Home Depot were recorded in our Building Materials Distribution and Wood Products segments and substantially all sales to Builders FirstSource were recorded in our Building Material Distribution segment. For additional information related to customers of our Wood Products and Building Materials Distribution segments, see the "Sales, Marketing, and Distribution" sections above.
Competition
Wood Products. The wood products manufacturing markets in which we operate are large and highly competitive. In EWP, we compete against several major North American EWP producers, such as Weyerhaeuser Company, Louisiana-Pacific Corporation, and Roseburg Forest Products, as well as several other smaller firms. Our EWP products also face competition from numerous dimension lumber producers, because EWP may be substituted by dimension lumber in many building
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applications. In plywood, we compete with Georgia-Pacific, the largest manufacturer in North America, other large producers such as Roseburg Forest Products, foreign imports produced principally in South America, and several smaller domestic producers. Our plywood products also face competition from OSB producers, because OSB can be substituted for plywood in many building and industrial applications. We have leading market positions in the manufacture of EWP and plywood. In the wood products manufacturing markets, we compete primarily on the basis of price, quality, availability, and particularly with respect to EWP, customer service, product support, and performance features offered. Most of our competitors are located in the U.S. and Canada, although we also compete with manufacturers in other countries, particularly when the U.S. dollar and economy are stronger relative to other countries, encouraging foreign producers to sell more of their plywood into the U.S.
Building Materials Distribution. The building materials distribution markets in which we operate are highly fragmented, and we compete in each of our geographic and product markets with national, regional, and local distributors. Our wholesale distribution competitors include BlueLinx Holdings Inc., Weyerhaeuser Company, Dixie Plywood and Lumber, OrePac, U.S. Lumber Group, Huttig Building Products, and Capital Lumber, among others. We also compete with wholesale brokers, specialty distributors, and certain buying cooperatives. We compete on the basis of pricing and availability of product, service and delivery capabilities, ability to assist customers with problem solving, extension of credit terms, customer relationships, geographic coverage, and breadth of product offerings. We distribute products for some manufacturers that also engage in direct sales to our distribution customers. Proximity to customers is also an important factor in minimizing shipping costs and facilitating quick order turnaround and on-time delivery. We believe our ability to obtain quality materials, from both internal and external sources, the scale and efficiency of our national footprint, and our focus on customer service are our primary competitive advantages in this segment. Also, financial stability is important to suppliers and customers in choosing distributors and allows for more favorable terms on which we are able to obtain products from our suppliers and sell to our customers.
We also present information pertaining to our segments, including product sales and customer concentration, in Note 17, Segment Information, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Human Capital Management
Human capital management and our ability to attract, develop and retain talent that embraces our shared values of integrity, safety, respect, and pursuit of excellence have been and will continue to be critical to executing our previously described strategic objectives.
At Boise Cascade, the health and safety of our 6,040 associates is core to how we do business. We collect and report common lagging indicators of safety performance, and our safety programs include tools, training, and resources that allow us to collect, analyze, and share leading indicators of safety-related hazards broadly across our organization. We believe that our focus on leading indicators helps to prevent future incidents and injuries. Living our values means driving the expectation that each of our associates has ownership in safety and the authority to stop work if there is a safety concern. Our safety commitment extends to minimizing the spread of COVID-19. Our cross-functional crisis team continues to monitor and adjust our protocols as infection rates fluctuate and state/local regulations change across the country. We continue to follow the Centers for Disease Control’s guidance and communicate regularly to our associates.
Our Code of Ethics guides the actions and behaviors of anyone working for, representing, or partnering with Boise Cascade. The code establishes the expectations for ensuring we have an inclusive and harassment-free work environment. We have an open-door policy that encourages associates to speak up about any work-related issues, suggestions, or ideas. We also provide a confidential CARE Line, which offers an additional way to report behavior or activity that may be unsafe, unethical, or illegal.
We are committed to providing comprehensive benefit programs. We offer benefits that will help our associates and their families live healthier and more secure lives. Our Total Rewards program provides competitive pay, comprehensive health benefits, 401(k) savings plans, well-being programs, community engagement opportunities, education aid, and career recognition and development.
Selecting and developing talent is a vital aspect of our human capital strategy because our associates are at the heart of our Purpose and delivering on our promises to our stakeholders. We focus on developing talent from within our businesses and supplement with finding the right external hires to support our key strategic objectives of accelerating innovation, digital technology, and diversity and inclusion. We strive for excellence in business continuity and personal growth by developing our
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associates as individuals through targeted leadership programs, experiences, and assignments. Individual development includes annual performance reviews with development plans, access to a variety of resources, and ongoing education opportunities.
Environmental
A discussion of general and industry-specific environmental laws and regulations is presented under the caption "Environmental" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Item 3. Legal Proceedings" of this Form 10-K.
Capital Investment
Information concerning our capital expenditures is presented in "Investment Activities" under "Liquidity and Capital Resources" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
Seasonal Influences
We are exposed to fluctuations in quarterly sales volumes and expenses due to seasonal factors. These seasonal factors are common in the building products industry. For further information, see "Seasonal Influences" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
Trademarks
We maintain many trademarks for our manufactured wood products, particularly EWP. Our key registered trademarks include BOISE CASCADE® and the TREE-IN-A-CIRCLE® logo, which are perpetual in duration as long as we continue to timely file all post registration maintenance documents related thereto. We believe these key trademarks to be of significant importance to our business.
Available Information
Our filings under the Exchange Act, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements, and all amendments to these filings, are available free of charge on the investor relations portion of our website at www.bc.com. These reports are available as soon as reasonably practicable after such material is electronically filed with or furnished to the SEC. The reference to our website address does not constitute incorporation by reference of the information contained on the website, and the information contained on the website is not part of this document.
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Executive Officers and Key Management
Below is a list of names, ages, and a brief description of the business experience of our executive officers and key members of management, each as of February 12, 2021.

Name | Age | Position
Executive Officers: |  |
Nate Jorgensen | 56 | Chief Executive Officer
Wayne Rancourt | 58 | Executive Vice President, Chief Financial Officer, and Treasurer
Mike Brown | 59 | Executive Vice President, Wood Products
Nick Stokes | 63 | Executive Vice President, Building Materials Distribution (retiring effective March 12, 2021)
Jill Twedt | 41 | Senior Vice President, General Counsel and Secretary
Kelly Hibbs | 54 | Vice President and Controller
Key Management: |  |
Erin Nuxoll | 60 | Senior Vice President, Human Resources
Rich Viola | 63 | Senior Vice President of Sales and Marketing, Building Materials Distribution
Frank Elfering | 54 | Vice President, General Manager Western Operations, Building Materials Distribution
Tom Hoffmann | 62 | Vice President of Purchasing, Building Materials Distribution
Robert Johnson | 56 | Vice President, Engineered Wood Products Sales and Marketing, Wood Products
Chris Seymour | 49 | Vice President, Manufacturing Operations, Wood Products
Jeff Strom | 53 | Vice President, General Manager Eastern Operations, Building Materials Distribution (Executive Vice President, BMD effective March 12, 2021)

Nate Jorgensen, Chief Executive Officer
Mr. Jorgensen became the company's chief executive officer effective March 6, 2020. His previous positions include:
•Chief Operating Officer, January 2019 - March 2020
•Senior Vice President of Engineered Wood Products, Wood Products, November 2017 - January 2019
•Vice President of Engineered Wood Products, Wood Products, February 2016 - November 2017
•Engineered Wood Products Marketing Manager, Wood Products, Boise Cascade Company, June 2015 - February 2016
•Prior employment with Weyerhaeuser Company, a New York Stock Exchange-listed timberlands and wood products company, as Vice President of Weyerhaeuser Distribution, February 2011 - June 2015
Mr. Jorgensen received a bachelor's degree in Civil and Environmental Engineering from the University of Wisconsin and also attended the Tuck School of Business Executive Education Program, Dartmouth College, Hanover, NH.
Wayne Rancourt, Executive Vice President, Chief Financial Officer, and Treasurer
Mr. Rancourt became our executive vice president, chief financial officer, and treasurer in November 2014. His previous positions with the company include:
•Senior Vice President, Chief Financial Officer, and Treasurer, August 2009 - November 2014
•Vice President, Treasurer and Investor Relations, February 2008 - August 2009
Mr. Rancourt received a bachelor's degree in Accounting from Central Washington University, Ellensburg, WA. He is a member of the board of directors of Commercial Vehicle Group, Inc., a supplier of seating systems, warehouse automation subsystems, wire harnesses, plastic parts, and mechanical assemblies, which is traded publicly on NASDAQ.
Mike Brown, Executive Vice President, Wood Products
Mr. Brown was elected executive vice president, Wood Products, in January 2019. His previous positions with the company include:
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•Senior Vice President of Operations, Wood Products, November 2017 - January 2019
•Vice President of Operations, Wood Products, February 2016 - November 2017
•Manufacturing Operations Manager, Wood Products, November 2014 - February 2016
Mr. Brown received a bachelor's degree of science in Forestry from Australian National University in Canberra and a master's degree in Business Administration from Cranfield University, England.
Nick Stokes, Executive Vice President, Building Materials Distribution
Mr. Stokes, our executive vice president, Building Materials Distribution, has elected to retire from the company effective March 12, 2021. He was elected to the position in March 2014. His previous positions with the company include:
•Senior Vice President, Building Materials Distribution, February 2011 - March 2014
•Vice President, Building Materials Distribution, October 2004 - February 2011
Mr. Stokes received a bachelor's degree in Management and a bachelor's degree in Marketing from the University of Utah, Salt Lake City, UT.
Jill Twedt, Senior Vice President, General Counsel and Secretary
Ms. Twedt was elected senior vice president, general counsel, and secretary in October 2020. Her previous positions include:
•Vice President, General Counsel, and Secretary, January 2019 - October 2020
•Vice President, Legal and Secretary, August 2017 - January 2019
•Associate General Counsel, July 2007 - August 2017
Ms. Twedt received a bachelor's degree in Political Science from the College of Idaho, Caldwell, ID and a law degree from the University of Idaho, Moscow, ID.
Kelly Hibbs, Vice President and Controller
Mr. Hibbs became our vice president and controller in February 2011. His previous positions with the company include:
•Director of Strategic Planning and Internal Audit, February 2008 - February 2011
Mr. Hibbs received a bachelor's degree in Accounting from Boise State University, Boise, ID. He is a certified public accountant.
Erin Nuxoll, Senior Vice President, Human Resources
Ms. Nuxoll was elected senior vice president, human resources in January 2019. Her previous positions include:
•Vice President, Human Resources, Boise Cascade Company, August 2016 - January 2019
•Senior Vice President, Human Resources, J.R. Simplot Company, a privately held food and agribusiness company, February 2010 - March 2016
•Vice President, Human Resources, J.R. Simplot Company, March 2006 - February 2010
•Vice President, Human Resources, Boise Cascade, L.L.C., November 2004 - November 2005
Ms. Nuxoll received a bachelor's degree in Forest Management from Washington State University, Pullman, WA and a
master's degree in Organizational Leadership from Gonzaga University, Spokane, WA.
Rich Viola, Senior Vice President of Sales and Marketing, Building Materials Distribution
Mr. Viola became our senior vice president of sales and marketing, Building Materials Distribution, in February 2016. His previous positions with the company include:
•Vice President, Sales and Marketing, Building Materials Distribution, October 2013 - February 2016
Mr. Viola received a bachelor's degree in Marketing from Northeastern University, Boston, MA.
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Frank Elfering, Vice President, General Manager Western Operations, Building Materials Distribution
Mr. Elfering became our vice president and general manager of western operations, Building Materials Distribution, in May 2019. His previous positions with the company include:
•Vice President of Purchasing, Building Materials Distribution, October 2013 - May 2019
•Purchasing Manager, Building Materials Distribution, July 2013 - October 2013
Mr. Elfering received a bachelor's degree in Marketing from Oregon State University, Corvallis, OR.
Tom Hoffmann, Vice President of Purchasing, Buildings Materials Distribution
Mr. Hoffmann became our vice president of purchasing, Building Materials Distribution, in May 2019. His previous positions with the company include:
•Vice President of Operations, Building Materials Distribution, October 2016 - May 2019
•Division Operations Manager, Building Materials Distribution, September 2015 - October 2016
•Pacific Region Manager, Building Materials Distribution, November 2006 - September 2015
Mr. Hoffmann received a bachelor's degree in Business from the University of Idaho, Moscow, ID, with an emphasis in marketing and management.
Robert Johnson, Vice President, Engineered Wood Products Sales & Marketing, Wood Products
Mr. Johnson became our vice president of engineered wood products sales and marketing, Wood Products, in January 2020. His previous positions with the company include:
•Director of Engineered Wood Products, March 2019 - January 2020
•Region Manager, Wood Products, February 2016 - March 2019
•Business Optimization Manager, Wood Products, March 2015 - February 2016
•Business Optimization Engineer, Wood Products, October 2014 - March 2015
Mr. Johnson received a bachelor’s degree in Finance from the University of Oregon, Eugene, OR.
Chris Seymour, Vice President, Manufacturing Operations, Wood Products
Mr. Seymour became our vice president of manufacturing operations, Wood Products, in January 2020. His previous positions with the company include:
•Director of Operations, Wood Products, February 2019 - January 2020
•Operations Manager, Wood Products, November 2017 - February 2019
•Area Manager, Wood Products, February 2015 - November 2017
Mr. Seymour received a bachelor’s degree in Business Administration and a master’s degree in Wood Science from West Virginia University, Morgantown, WV.
Jeff Strom, Vice President, General Manager Eastern Operations, Building Materials Distribution
Mr. Strom will become Executive Vice President, Building Materials Distribution, effective March 12, 2021. He is currently our vice president and general manager of eastern operations, Building Materials Distribution, to which position he was elected in January 2020. His previous positions with the company include:
•General Manager, Eastern Region, Building Materials Distribution, May 2019 - January 2020
•Region Manager, Building Materials Distribution, November 2015 - May 2019
•Branch Manager, Building Materials Distribution, September 2008 - November 2015
Mr. Strom received a bachelor’s degree in Management from the Georgia Institute of Technology, Atlanta, GA.
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ITEM 1A. RISK FACTORS
Risks Relating to Our Business
The full effect of the COVID-19 pandemic on our business is currently unknown but it may adversely affect our business and operating results.
The full impacts of the global emergence of COVID-19 on our business and financial results remain unknown. We continue to conduct business with modifications to our manufacturing production levels, mill and distribution center housekeeping and cleanliness protocols, employee travel, employee work locations, and virtualization or cancellation of certain sales and marketing events, among other modifications. Companies and various governmental agencies have taken precautionary and preemptive actions to address COVID-19, and further actions may yet be taken that alter our normal business operations as well as those in our industry. The U.S. Department of Homeland Security (DHS) has continued to designate the forest products industry, and thereby wood products manufacturing and building materials distribution, as part of the Essential Critical Infrastructure Workforce. However, state and local agencies are not mandated to follow the DHS designations, and in certain geographies across the U.S., additional restrictions have been imposed that further limit or preclude residential construction activity. Furthermore, a re-acceleration of COVID-19 cases, or delays in vaccine distribution or effectiveness, could prompt state or local officials to reinstitute restrictions that could limit or constrain building activity. All of our manufacturing and distribution facilities are operating, but we have experienced periodic disruptions at many locations due to COVID-19. We may be required to implement temporary curtailments and to operate both manufacturing and distribution facilities at reduced levels, which would result in negative impacts on our business, financial condition, results of operations, and cash flows. In addition, the economic consequences of COVID-19 may adversely affect the pace of household formation rates and residential repair-and-remodeling activity due to high unemployment rates, lower wages, reduced consumer confidence, availability of construction labor, materials, and building lots, homebuyers' access to and cost of financing, and housing affordability, as well as other factors. We continue to actively monitor evolving developments and may take actions that alter our business operations as may be required by federal, state or local authorities, or that we determine are in the best interests of our associates, customers, suppliers, and stockholders.
Many of the products we manufacture or purchase and resell are commodities whose price is determined by the market's supply and demand for such products, and the markets in which we operate are cyclical and competitive.
Many of the building products we produce or distribute, including OSB, plywood, and lumber, are commodities that are widely available from other manufacturers or distributors with prices and volumes determined frequently in an auction market based on participants' perceptions of short-term supply and demand factors. At times, the price for any one or more of the products we produce or distribute may fall below our cash production or purchase costs, requiring us to either incur short-term losses on product sales or cease production at one or more of our manufacturing facilities. Therefore, our profitability with respect to these commodity products depends, in significant part, on effective facilities maintenance programs, and on managing our cost structure, particularly raw materials and labor, which represent the largest components of our operating costs. Commodity wood product prices have historically been volatile in response to industry operating rates, net import and export activity, inventory levels in various distribution channels, and seasonal demand patterns. Commodity price volatility also affects our distribution business, with falling price environments generally causing reduced revenues and margins, resulting in declines in profitability.
Demand for the products we manufacture, as well as the products we purchase and distribute, is closely correlated with new residential construction in the U.S. and, to a lesser extent, residential repair-and-remodeling activity and light commercial construction. New residential construction activity has historically been volatile with demand for new residential construction influenced by seasonal weather factors, mortgage availability and rates, housing affordability, unemployment levels, wage growth, household formation rates, domestic population growth, immigration rates, residential vacancy and foreclosure rates, demand for second homes, consumer confidence, and other general economic factors. Furthermore, the size of new single-family residences as well as the mix of single and multi-family starts influences product consumption.
Industry supply for the products we produce and distribute is influenced primarily by price-induced changes in the operating rates of existing facilities, but is also influenced over time by the introduction of new product technologies, capacity additions and closures, restart of idled capacity, and log availability. The balance of supply and demand in the U.S. is also heavily influenced by imported products, principally from Canada and South America. New LVL capacity in the southeastern United States came online in late 2019, which we expect will add competitive volume and pricing pressure to the LVL marketplace.
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In addition, we sell wood chips that are a byproduct of processing logs at our manufacturing operations, or created through the chipping of small diameter logs that we are unable to process at our manufacturing operations. Our wood chips are primarily sold to paper mills in close proximity to our operations who convert the chips into wood pulp. Periods of high output from wood based operations, closure of paper mills in the regions that we operate, or declines in demand for paper grades that utilize our chips, can negatively affect the balance of supply and demand for chips. An oversupply of chips has a negative impact on our chip price realizations and profitability.
We have very limited control of the foregoing, and as a result, our profitability and cash flow may fluctuate materially in response to changes in the supply and demand balance for our primary products.
Our industry is highly competitive. If we are unable to compete effectively, our sales, operating results, and growth strategies could be negatively affected.
The markets for the products we manufacture in our Wood Products segment are highly competitive. Our competitors range from very large, fully integrated forest and building products firms to smaller firms that may manufacture only one or a few types of products. We also compete less directly with firms that manufacture substitutes for wood building products. Certain mills operated by our competitors may be lower-cost manufacturers than the mills operated by us.
Our Wood Products segment provides financial incentives, including temporary price protection, to various parties along the supply chain (including wholesale distributors, retail lumberyards, and homebuilders) to increase sales of and loyalty to our EWP products. As a result of these commercial arrangements, the full effects of announced price increases may be delayed or reduced, impacting our financial results.
The building products distribution industry that our Building Materials Distribution segment competes in is highly fragmented and competitive, and the barriers to entry for local competitors are relatively low. Competitive factors in our industry include pricing and availability of product, service and delivery capabilities, ability to assist customers with problem solving, extension of credit terms, customer relationships, geographic coverage, and breadth of product offerings. Also, financial stability is important to suppliers and customers in choosing distributors and allows for more favorable terms on which to obtain products from suppliers and sell products to customers. If our financial condition deteriorates in the future, our relationships with suppliers and customers may be negatively affected.
Some of the businesses with which we compete are part of larger companies and therefore have access to greater financial and other resources than we do. These resources may afford those competitors greater purchasing power, increased financial flexibility, and more capital resources for expansion and improvement, which may enable those competitors to compete more effectively than we can. In addition, certain suppliers to our distribution business also sell and distribute their products directly to our customers. Additional manufacturers of products distributed by us may elect to sell and distribute directly to our retail customers in the future or enter into exclusive supply arrangements with other distributors. Finally, we may not be able to maintain our costs at a level sufficiently low for us to compete effectively. If we are unable to compete effectively, our net sales and net income will be reduced.
Cyber security risks related to the technology used in our operations and other business processes, as well as security breaches of company, customer, employee, and vendor information, could adversely affect our business.
We rely on various information technology systems to capture, process, store, and report data and interact with customers, vendors, and employees. We also rely on information technology systems that automate aspects of our manufacturing processes. We work to install new, and upgrade existing, information technology systems and provide employee awareness training around phishing, malware, and other cyber risks to ensure that we are protected, to the greatest extent possible, against cyber risks and security breaches. Despite careful security and controls design, including independent third-party assessments, our information technology systems, and those of our third-party providers, have been subject to security breaches and cyber-attacks. To date, none of the known security breaches or cyber-attacks have had material adverse effects on our operations. However, in the future, network, system, and data breaches could result in misappropriation of sensitive data or operational disruptions, including interruption to systems availability and denial of access to and misuse of applications required by our customers to conduct business with us. In addition, sophisticated hardware and operating system software and applications that we procure from third parties may contain defects in design or manufacture, including "bugs" and other problems that could unexpectedly interfere with the operation of the systems. Misuse of internal applications; theft of intellectual property, trade secrets, or other corporate assets; and unauthorized disclosure of confidential information could stem from such incidents. Delayed sales, slowed production, or other repercussions resulting from these disruptions could result in lost sales, business delays, and negative publicity and could have a material adverse effect on our operations, financial condition, or cash flows.
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A material disruption at one of our manufacturing facilities could prevent us from meeting customer demand, including the demand from our Building Materials Distribution business, reduce our sales, and/or negatively affect our financial results.
Any of our manufacturing facilities, or any of our machines within an otherwise operational facility, could cease operations unexpectedly due to a number of events, including but not limited to:
•labor difficulties, including the inability to staff our facilities due to the COVID-19 outbreak;
•equipment failure, particularly a press at one of our major EWP production facilities;
•fires, floods, earthquakes, hurricanes, or other catastrophes;
•unscheduled maintenance outages;
•utility, information technology, telephonic, and transportation infrastructure disruptions;
•other operational problems; or
•ecoterrorism or threats of ecoterrorism.
Any downtime or facility damage could prevent us from meeting customer demand for our products and/or require us to make unplanned capital expenditures. If our machines or facilities were to incur significant downtime, our ability to satisfy customer requirements would be impaired, resulting in lower sales and net income.
Because approximately 61% of our Wood Products sales in 2020 were to our Building Materials Distribution business, a material disruption at our Wood Products facilities would also negatively affect our Building Materials Distribution business. We are therefore exposed to a larger extent to the risk of disruption to our Wood Products manufacturing facilities due to our vertical integration and the resulting impact on our Building Materials Distribution business.
In addition, a number of our suppliers are subject to the manufacturing facility disruption risks noted above. Our suppliers' inability to produce the necessary raw materials for our manufacturing processes or supply the finished goods that we distribute through our Building Materials Distribution segment may adversely affect our results of operations, cash flows, and financial position.
A significant portion of our sales are concentrated with a small number of customers.
For the year ended December 31, 2020, our top ten customers represented approximately 42% of our sales, with one customer accounting for approximately 11% of total sales. At December 31, 2020, receivables from two customers accounted for approximately 12% and 13% of total receivables. Although we believe that our relationships with our customers are strong, the loss of one or more of these customers could have a material adverse effect on our operating results, cash flow, and liquidity.
Adverse market conditions, including the inability of our customers to conduct operations due to the COVID-19 pandemic, may increase the credit risk from our customers.
Our Building Materials Distribution and Wood Products segments extend credit to numerous customers who are generally susceptible to the same economic business risks as we are, including the COVID-19 pandemic outbreak. Unfavorable market conditions or the inability of our customers to conduct operations due to the COVID-19 pandemic could result in financial failures of one or more of our significant customers. Furthermore, we may not necessarily be aware of any deterioration in our customers' financial position. In addition, as customers merge and consolidate, credit risk may become concentrated among fewer customers. If our customers' financial positions become impaired, our ability to fully collect receivables from such customers could be impaired and negatively affect our operating results, cash flow, and liquidity.
Product shortages, loss of key suppliers, and our dependence on third-party suppliers and manufacturers could affect our financial health.
Our ability to offer a wide variety of products to our Building Materials Distribution customers is dependent upon our ability to obtain adequate product supply from manufacturers and other suppliers. Our customers' purchasing decisions for commodity products we sell are primarily based on price and availability, and these commodities may be sourced from various manufacturers. In the case of the general line and EWP products that we distribute, brand preference and product performance
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characteristics can have a high degree of influence on our customers purchasing decision. Supply chains, including key products purchased from our suppliers, may be disrupted during a pandemic outbreak such as COVID-19. In addition, although we have agreements in place with many of our suppliers, such agreements are generally terminable by either party on relatively short notice. The loss of, or a substantial decrease in the availability of, products from our suppliers or the loss of key supplier arrangements could adversely impact our financial condition, operating results, and cash flows.
Labor disruptions, shortages of skilled and technical labor, or increased labor costs could adversely affect our business.
As of February 12, 2021, we had approximately 6,040 employees. Approximately 23% of these employees work pursuant to collective bargaining agreements. As of February 12, 2021, we had ten collective bargaining agreements. Two agreements covering approximately 760 employees at our Oakdale and Florien plywood plants are set to expire on July 15, 2021. If any of these agreements are not renewed or extended upon their termination, we could experience a material labor disruption, strike, or significantly increased labor costs at one or more of our facilities, either in the course of negotiations of a labor agreement or otherwise.
In addition, our ability to attract and retain talent is challenging due to a shortage of both hourly and technically skilled workers for our manufacturing and distribution facilities, as well as changing workforce expectations. The pandemic adds challenges recruiting associates unwilling to work in a ‘dense’ work environment. Despite increases in unemployment rates due to the pandemic, those unemployed may not reside in the same areas as our manufacturing facilities, or may be unwilling to accept shift work or the physical nature of our positions. Labor disruptions or shortages could prevent us from meeting customer demands or result in increased costs, thereby reducing our sales and profitability.
We may be unable to attract and retain key management and other key employees.
Our key managers are important to our success and may be difficult to replace because they have a significant amount of experience in wood products manufacturing and building materials distribution. While our senior management team has considerable experience, certain members of our management team are nearing or have reached retirement age. In addition, certain of our employees have assumed key roles in recent years and may not have the experience of retiring key managers. The failure to successfully formulate and implement succession plans for retiring employees, and training plans for new key managers, could result in inadequate depth of institutional knowledge or inadequate skill sets, which could adversely affect our business.
Our long-lived assets, goodwill, and/or intangible assets may become impaired, which may require us to record non-cash impairment charges that could have a material impact on our results of operations.
We review the carrying value of long-lived assets for impairment when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. We also test goodwill in each of our reporting units and intangible assets with indefinite lives for impairment annually in the fourth quarter or sooner if events or changes in circumstances indicate that the carrying value of the asset may exceed fair value. To the extent that long-lived assets, goodwill, and/or intangible assets do not provide the future economic benefit we expect, it may result in non-cash impairment or accelerated depreciation charges. These non-cash impairments or accelerated depreciation charges could have a material impact on our results of operations in the period in which these charges are recognized.
Future events or circumstances such as sustained negative economic impact of the COVID-19 pandemic, declines in single-family housing starts, environmental regulations or restrictions, sustained periods of weak commodity prices, loss of key customers, capacity additions by competitors, changes in the competitive position of our products, or changes in raw materials or manufacturing costs that lead us to believe the long-lived asset will no longer provide a sufficient return on investment, could prompt decisions to invest capital differently than expected, sell facilities, or to curtail operations. Any of these factors, among others, could result in non-cash impairment or accelerated depreciation charges in the future with respect to the book value of certain assets and past investments we have made.
For additional information and a discussion regarding the impact of impairment of long-lived assets and accelerated depreciation charges on our results of operations and financial condition, see Note 6, Curtailment of Manufacturing Facilities, and Note 7, Sale of Manufacturing Facilities, of the Notes to the Consolidated Financial Statements in "Item 8, Financial Statements and Supplementary Data" and "Long-Lived Asset Impairment" included in "Critical Accounting Estimates" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
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Our manufacturing operations may have difficulty obtaining wood fiber at favorable prices or at all.
Wood fiber is our principal raw material, which accounted for approximately 42% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation) for our Wood Products segment in 2020. Our primary source of wood fiber is logs. Log prices have been historically cyclical in response to changes in domestic and foreign demand and supply. In the future, we expect the level of foreign demand for log exports from the western U.S. to fluctuate based on the economic activity in China and other Pacific Rim countries, currency exchange rates, trade policies, and the availability of log supplies from other countries such as Canada, Russia, and New Zealand. Sustained periods of high log costs may impair the cost competitiveness of our manufacturing facilities.
In our Pacific Northwest operations, a substantial portion of our logs are purchased from governmental authorities, including federal, state, and local governments. As a result, existing and future governmental regulation can affect our access to, and the cost of, such timber. Future domestic or foreign legislation and litigation concerning the use of timberlands, timber harvest methodologies, forest road construction and maintenance, the protection of endangered species, forest-based carbon sequestration, the promotion of forest health, and the response to and prevention of catastrophic wildfires can affect log and fiber supply from both government and private lands. Availability of harvested logs and fiber may be further limited by pandemics, fire, insect infestation, disease, ice storms, windstorms, hurricanes, flooding, and other natural and man-made causes, thereby reducing supply and increasing prices. Changes in global climate conditions could amplify one or more of these factors. If we are unable to negotiate purchases for our log requirements in a particular region to satisfy our log needs at satisfactory prices or at all, which could include private purchases, open-market purchases, and purchases from governmental sources, it could have an adverse effect on our results of operations.
We also purchase OSB, which is used as the vertical web to assemble I-joists, from a supplier with multiple locations throughout North America. OSB accounted for approximately 7% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation) for our Wood Products segment in 2020. OSB is a commodity, and prices have been historically volatile in response to industry capacity restarts and operating rates, inventory levels in various distribution channels, and seasonal demand patterns. Sustained periods of high OSB costs lead to higher costs of our I-joist production.
Wood fiber also includes, to a lesser extent than OSB, lumber purchased from third parties for I-joist production at our Canadian EWP facility and for production at our laminated beam plant in Idaho. Lumber input costs are subject to similar commodity-based volatility characteristics noted above for OSB.
We are subject to environmental regulation and environmental compliance expenditures, as well as other potential environmental liabilities.
Our businesses are subject to a wide range of general and industry-specific environmental laws and regulations, particularly with respect to air emissions, wastewater discharges, solid and hazardous waste management, and site remediation. Compliance with these laws and regulations is a significant factor in the operation of our businesses. Enactment of new environmental laws or regulations, including those aimed at addressing greenhouse gas emissions and climate change, or changes in existing laws or regulations might require us to make significant expenditures or restrict operations.
As an owner and operator of real estate, we may be liable under environmental laws for the cleanup of past and present spills and releases of hazardous or toxic substances on or from our properties and operations. We may also be contractually obligated to indemnify third parties under environmental laws for the cleanup of past spills and releases of hazardous or toxic substances for properties which we no longer own and operate. We could be found liable under these laws whether or not we knew of, or were responsible for, the presence of such substances. In some cases, this liability may exceed the value of the property itself.
We may be unable to generate funds or other sources of liquidity and capital to fund unforeseen environmental liabilities or expenditures to the extent we are not indemnified by third parties. For example, in connection with prior transactions, certain third parties are generally obligated to indemnify us for hazardous substance releases and other environmental violations that occurred prior to such transactions. However, these third parties may not have sufficient funds to fully satisfy their indemnification obligations when required, and in some cases, we may not be contractually entitled to indemnification by them.
For additional information on how environmental regulation and compliance affects our business, see "Environmental" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
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Our strategy includes pursuing acquisitions. We may be unable to efficiently integrate acquired operations or realize expected benefits from such acquisitions.
We evaluate potential acquisitions from time to time and have in the past grown through acquisitions. In the future, we may be unable to successfully identify attractive potential acquisitions or effectively integrate potential acquisitions due to multiple factors, including those noted below, and potential issues related to regulatory review of the proposed transactions. We may also be required to incur additional debt in order to consummate acquisitions, which debt may be substantial and may limit our flexibility in using our cash flow from operations.
We may not be able to integrate the operations of acquired businesses in an efficient and cost-effective manner or without disruption to our existing operations or may not be able to realize expected benefits. Acquisitions involve significant risks and uncertainties, including some that may not be identifiable or resolvable in due diligence. Subsequent to making the investment, performance of the acquired assets is subject to economic uncertainties, as described in our other risk factors, as well as difficulties integrating acquired personnel into our business, the potential loss of key employees, customers, or suppliers, difficulties in integrating different computer and accounting systems, exposure to unknown or unforeseen liabilities of acquired companies, and the diversion of management attention and resources from existing operations.
Our failure to integrate future acquired businesses effectively, realize expected benefits, or to manage other consequences of our acquisitions could adversely affect our financial condition, operating results, and cash flows.
Some of our products are vulnerable to declines in demand due to competing technologies or materials, as well as changes in building code provisions.
Our products may compete with alternative products in certain market segments. For example, plastic, concrete, steel, wood/plastic or composite materials may be used by builders as alternatives to the products produced by our Wood Products segment such as EWP and plywood. Changes in prices for oil, chemicals, and wood-based fiber can change the competitive position of our products relative to available alternatives and could increase substitution of those products for our products. As the use of these alternatives grows, demand for our products may decline.
Our principal manufactured products are also subject to substitution from other wood-based products, such as EWP facing competition from numerous dimension lumber producers and other strand based EWP that we don't produce or plywood losing further market share to OSB in residential and non-residential applications.
In addition, building code provisions have been implemented in certain jurisdictions to address concerns for firefighter safety related to the collapse of floors during residential fires. The I-joists that we manufacture are subject to this code change. As local jurisdictions adopt the new code, we may be competitively disadvantaged in houses that are built with ground floors over unfinished basements and could be subject to substitution by dimension lumber or other products.
Our operations require substantial capital, and recent significant capital investments and acquisitions have increased fixed costs, which could negatively affect our profitability.
In recent years, we have completed a number of capital investments; including the replacement or rebuild of veneer dryers and log utilization centers (or improvements to other manufacturing equipment), increasing our outdoor storage acreage, and leasing additional warehouse space. These capital investments, along with acquisitions, have resulted in increased fixed costs, which could negatively affect our profitability if our revenue and operating results do not offset our incremental fixed costs. Capital expenditures for expansion or replacement of existing facilities or equipment or to comply with future changes in environmental laws and regulations may be substantial. Although we maintain our production equipment with regular periodic and scheduled maintenance, we cannot guarantee that key pieces of equipment in our various manufacturing facilities will not need to be repaired or replaced or that we will not incur significant additional costs associated with environmental compliance. The costs of repairing or replacing such equipment and the associated downtime of the affected production line could have a material adverse effect on our financial condition, results of operations and cash flow. If for any reason we are unable to provide for our operating needs, capital expenditures, and other cash requirements on economic terms, we could experience a material adverse effect on our business, financial condition, results of operations, and cash flows.
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We depend on third parties for transportation services and limited availability or increases in costs of transportation could adversely affect our business and operations.
Our business depends on the transportation of a large number of products, via railroad or truck. We rely primarily on third parties for transportation of the products we manufacture or distribute and for the delivery of our raw materials. In addition, we are subject to seasonal capacity constraints and weather-related delays for both rail and truck transportation.
If any of our third-party transportation providers were to fail to deliver the goods we manufacture or distribute in a timely manner, we may be unable to sell those products at full value. Similarly, if any of these providers were to fail to deliver raw materials to us in a timely manner, we may be unable to manufacture our products in response to customer demand. In addition, if any of these third parties were to cease operations or cease doing business with us, we may be unable to replace them at reasonable cost.
Any failure of a third-party transportation provider to deliver raw materials or finished products in a timely manner could harm our reputation, negatively affect our customer relationships, and have a material adverse effect on our operating results, cash flows, and financial condition.
In addition, an increase in transportation rates or fuel surcharges could adversely affect our sales, profitability, and cash flows.
The nature of our business exposes us to product liability, product warranty, casualty, manufacturing and construction defects, and other claims.
We may be involved in product liability, product warranty, casualty, manufacturing and construction defects, and other claims relating to the products we manufacture and distribute, and services we provide. We also rely on manufacturers and other suppliers to provide us with many of the products we sell and distribute. Because we do not have direct control over the quality of such products manufactured or supplied by such third-party suppliers, we are exposed to risks relating to the quality of such products. In addition, we are exposed to potential claims arising from the conduct of our employees, and homebuilders and their subcontractors, for which we may be contractually liable. Although we currently maintain what we believe to be suitable and adequate insurance in excess of our self-insured amounts, there can be no assurance that we will be able to maintain such insurance on acceptable terms or that such insurance will provide adequate protection against potential liabilities. Product liability, product warranty, casualty, construction defect, and other claims can be expensive to defend and can divert the attention of management and other personnel for significant periods, regardless of the ultimate outcome. Claims of this nature could also have a negative impact on our reputation and customer confidence in our products and our company. We cannot assure that any current or future claims will not adversely affect our financial condition, operating results, and cash flows.
Our ability to service our indebtedness or to fund our other liquidity needs is subject to various risks.
Our ability to make scheduled payments on our indebtedness and fund other liquidity needs depends on and is subject to our financial and operating performance, which in turn is affected by general and regional economic, financial, competitive, business, and other factors, including the availability of financing in the banking and capital markets as well as the other risks described herein. In particular, demand for our products correlates to a significant degree to the level of residential construction activity in North America, which historically has been characterized by significant cyclicality.
We cannot guarantee that our business will generate sufficient cash flows from operations or that future borrowings will be available to us at a cost or in an amount sufficient to enable us to service our debt or to fund our other liquidity needs. If we are unable to service our debt obligations or to fund our other liquidity needs, we could be forced to curtail our operations, reorganize our capital structure, or liquidate some or all of our assets.
The terms of our debt agreements restrict, and covenants contained in agreements governing indebtedness in the future may impose, significant operating and financial restrictions on our company and our subsidiaries, which may prevent us from capitalizing on business opportunities.
Our debt agreements contain, and any future indebtedness of ours may contain, a number of restrictive covenants that impose operating and financial restrictions on us. Our debt agreements limit our ability and the ability of our restricted subsidiaries, among other things, to:
•incur additional debt;
•declare or pay dividends, redeem stock, or make other distributions to stockholders;
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•make investments;
•create liens or use assets in security in other transactions;
•merge or consolidate, or sell, transfer, lease, or dispose of substantially all of our assets;
•enter into transactions with affiliates;
•sell or transfer certain assets; and
•in the case of our revolving credit facility, make prepayments on our senior notes and subordinated indebtedness.
In addition, our revolving credit facility provides that if an event of default occurs or excess availability under our revolving credit facility drops below a threshold amount equal to the greater of 10% of the aggregate commitments under our revolving credit facility or $35 million (and until such time as excess availability for two consecutive fiscal months exceeds that threshold amount and no event of default has occurred and is continuing), we will be required to maintain a monthly minimum fixed charge coverage ratio of 1.0:1.0, determined on a trailing twelve-month basis.
Our failure to comply with any of these covenants could result in an event of default which, if not cured or waived, could result in the acceleration of all of our indebtedness.
Risks Relating to Ownership of Our Common Stock
The price of our common stock may fluctuate significantly.
Volatility in the market price of our common stock may prevent a stockholder from being able to sell shares at or above the price paid for them. The market price for our common stock could fluctuate significantly for various reasons, including:
•our operating and financial performance and prospects;
•our quarterly or annual earnings or those of other companies in our industry;
•the public's reaction to our press releases, our other public announcements, and our filings with the Securities and Exchange Commission (SEC);
•changes in key personnel;
•strategic actions by us, our customers, or our competitors, such as acquisitions or restructurings;
•changes in, or failure to meet, earnings estimates or recommendations by research analysts who track our common stock or the stock of other companies in our industry;
•the failure of research analysts to cover our common stock;
•general economic, industry, and market conditions;
•new laws or regulations or new interpretations of existing laws or regulations applicable to our business;
•material litigation or government investigations;
•changes in general conditions in the U.S. and global economies or financial markets, including those resulting from war, incidents of terrorism, pandemics, or responses to such events;
•sales of common stock by us or members of our management team;
•the granting of equity or equity-based incentives;
•volume of trading in our common stock (which may be impacted by future sales or repurchases of our common stock);
•changes in accounting standards, policies, guidance, interpretations, or principles; and
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•the impact of the factors described elsewhere in "Item 1A. Risk Factors" of this Form 10-K.
In addition, the stock market has regularly experienced significant price and volume fluctuations. This volatility has had a significant impact on the market price of securities issued by many companies, including companies in our industry. The changes frequently appear to occur without regard to the operating performance of the affected companies. Hence, the price of our common stock could fluctuate based upon factors that have little or nothing to do with us, and these fluctuations could materially reduce our share price.
We may not pay cash dividends in the future.
In November 2017, our board of directors approved a dividend policy pursuant to which we have paid quarterly cash dividends to holders of our common stock. In addition to these quarterly dividends, we also paid supplemental dividends in each of the last three years. However, the future declaration and payment of dividends will continue to be at the discretion of our board of directors and the dividend policy may be suspended or canceled at its discretion at any time. Declaration of future dividends will depend upon legal capital requirements and surplus, our future operations and earnings, general financial condition, contractual obligations, restrictions imposed by our asset-based credit facility, the indenture governing our senior notes, applicable laws, and other factors that our board of directors may deem relevant. Unless we continue to pay cash dividends on our common stock in the future, the success of an investment in our common stock will depend entirely upon its appreciation. Our common stock may not appreciate in value or even maintain the price at which it was purchased.
Certain provisions of our organizational documents and other contractual provisions may make it difficult for stockholders to change the composition of our board of directors and may discourage hostile takeover attempts that some of our stockholders may consider to be beneficial.
Certain provisions of our certificate of incorporation and bylaws may have the effect of delaying or preventing changes in control if our board of directors in exercising its duty of care determines that such changes in control are not in the best interests of the company and our stockholders. The provisions in our certificate of incorporation and bylaws include, among other things, the following:
• the ability of our board of directors to issue shares of preferred stock and to determine the price and other terms, including preferences and voting rights, of those shares without stockholder approval;
• stockholder action can only be taken at a special or regular meeting and not by written consent;
• advance notice procedures for nominating candidates to our board of directors or presenting matters at stockholder meetings;
• removal of directors only for cause;
•allowing only our board of directors the ability to create additional director seats and fill vacancies on our board of directors; and
• super-majority voting requirements to amend our bylaws and certain provisions of our certificate of incorporation.
We have elected in our certificate of incorporation not to be subject to Section 203 of the General Corporation Law of the State of Delaware (DGCL), an antitakeover law. However, our certificate of incorporation contains provisions that have the same effect as Section 203. The provisions in our certificate of incorporation prohibit us from engaging in a business combination, such as a merger, with a person or group owning 15% or more of the corporation's voting stock for a period of three years following the date the person became an interested stockholder, unless (with certain exceptions) the business combination or the transaction in which the person became an interested stockholder is approved in a prescribed manner.
While these provisions have the effect of encouraging persons seeking to acquire control of our company to negotiate with our board of directors, they could enable the board of directors to hinder or frustrate a transaction that some, or a majority, of the stockholders might believe to be in their best interests and, in that case, may prevent or discourage attempts to remove and replace incumbent directors.
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These provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our board of directors, which is responsible for appointing the members of our management.
ITEM 1B. UNRESOLVED STAFF COMMENTS
We have no unresolved comments from the SEC staff.
ITEM 2. PROPERTIES
Our properties are well-maintained and are suitable for the operations for which they are used. Information concerning production capacity and the utilization of our manufacturing facilities is presented in "Item 1. Business" of this Form 10-K.
The following is a list of our facilities by segment as of February 12, 2021. We lease office space for our corporate headquarters in Boise, Idaho.
Wood Products
We own all of our Wood Products manufacturing facilities. The following table summarizes our Wood Products facilities as of February 12, 2021:

Facility Type |  | Number of Facilities |  | Locations
Plywood and veneer plants |  | 8 |  | Louisiana (2), Oregon (4), South Carolina, and Washington
LVL/I-joist/laminated beam plants |  | 5 |  | Alabama, Louisiana, Oregon, Idaho, and Canada
Sawmills |  | 2 |  | Washington (2)

Building Materials Distribution
Our Building Materials Distribution business operates a nationwide network of 38 owned and leased warehouse facilities across the U.S. The total approximate square footage of our warehouse space is 5.0 million, of which 2.2 million square feet is owned. Substantially all of our leases are noncancelable and the majority are accounted for as operating leases. These leases are not subject to early termination except for standard nonperformance clauses. In addition, BMD operates a single component manufacturing plant.

ITEM 3. LEGAL PROCEEDINGS
We are a party to legal proceedings that arise in the ordinary course of our business, including commercial liability claims, premises claims, environmental claims, and employment-related claims, among others. As of the date of this filing, we believe it is not reasonably possible that any of the legal actions against us will, individually or in the aggregate, have a material adverse effect on our financial position, results of operations, or cash flows.
SEC regulations require us to disclose certain information about proceedings arising under federal, state or local environmental provisions if we reasonably believe that such proceedings may result in monetary sanctions above a stated threshold. Pursuant to the SEC regulations, we use a threshold of $1 million or more for purposes of determining whether disclosure of any such proceedings is required.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.
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PART II
ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES
Market Price of Our Common Stock
Our common stock is traded on the New York Stock Exchange (NYSE) under the trading symbol BCC. On February 12, 2021, there were 39,202,927 shares of our common stock outstanding, held by 10 stockholders of record, one of which was Cede & Co., which is the nominee of The Depository Trust Company.
Performance Graph
The following graph compares the return on a $100 investment in our common stock on December 31, 2015, with a $100 investment also made on December 31, 2015, in the S&P SmallCap 600 Index and in our peer group. The companies included in our peer group are Louisiana-Pacific Corporation, BlueLinx Holdings Inc., UFP Industries, Inc., Builders FirstSource, Inc., and Norbord Inc. The information in the graph below is not "soliciting material," is not deemed "filed" with the SEC, and is not to be incorporated by reference in any of our filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Annual Report on Form 10-K, except to the extent that we specifically incorporate such information by reference. The stock performance shown below is not necessarily indicative of future performance.
___________________________________
(a) $100 invested in stock or index on December 31, 2015, including reinvestment of dividends in additional shares of the same class of equity securities.
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Unregistered Sales of Equity Securities
We did not sell any unregistered securities from January 1, 2020, through December 31, 2020.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
On February 25, 2015, our Board of Directors authorized a common stock repurchase program (Program), which allows us to purchase up to two million shares of our common stock, on an opportunistic basis, through open market transactions, privately negotiated transactions, or accelerated share repurchase transactions. As of December 31, 2020, there were 496,989 shares of common stock that may yet be purchased under the Program. We did not repurchase any shares of our common stock during the three months ended December 31, 2020.

ITEM 6. SELECTED FINANCIAL DATA
The following table sets forth our selected financial data for the periods indicated and should be read in conjunction with the disclosures in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.

| Year Ended December 31
| 2020 (a) |  | 2019 |  | 2018 (b)(c) |  | 2017 (c) |  | 2016 (d)
| (millions, except per-share data)
Consolidated statement of operations data |  |  |  |  |  |  |  |  |
Sales | $ | 5,475 |  |  | $ | 4,643 |  |  | $ | 4,995 |  |  | $ | 4,432 |  |  | $ | 3,911 |
Net income | $ | 175 |  |  | $ | 81 |  |  | $ | 20 |  |  | $ | 83 |  |  | $ | 38 |
Net income per common share – diluted | $ | 4.44 |  |  | $ | 2.06 |  |  | $ | 0.52 |  |  | $ | 2.12 |  |  | $ | 0.98 |
Earnings before interest, taxes, depreciation, and amortization (EBITDA) (e) | $ | 407 |  |  | $ | 212 |  |  | $ | 193 |  |  | $ | 223 |  |  | $ | 142 |
Adjusted EBITDA (e) | $ | 423 |  |  | $ | 215 |  |  | $ | 193 |  |  | $ | 222 |  |  | $ | 153 |
Cash dividends declared per common share (f) | $ | 2.00 |  |  | $ | 1.37 |  |  | $ | 1.30 |  |  | $ | 0.07 |  |  | $ | — |
Balance sheet data (at end of year) |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 405 |  |  | $ | 285 |  |  | $ | 192 |  |  | $ | 177 |  |  | $ | 104 |
Working capital, excluding cash and cash equivalents | $ | 379 |  |  | $ | 353 |  |  | $ | 424 |  |  | $ | 374 |  |  | $ | 344 |
Total assets (g) | $ | 1,966 |  |  | $ | 1,693 |  |  | $ | 1,581 |  |  | $ | 1,607 |  |  | $ | 1,439 |
Total long-term debt | $ | 444 |  |  | $ | 441 |  |  | $ | 439 |  |  | $ | 438 |  |  | $ | 438 |

_______________________________________
(a) The following items negatively impacted 2020 net income:
•$14.0 million pre-tax loss on extinguishment of debt. For more information, see Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•$15.0 million of accelerated depreciation and $1.7 million of various closure-related costs related to the permanent curtailment of I-joist production at our Roxboro, North Carolina facility. For additional information, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•$6.2 million pre-tax loss from non-cash pension settlement charges, related to the elimination of our qualified defined benefit pension plan (Pension Plan). For more information, see Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•$38.8 million of incremental income tax expense related to the release of stranded tax effects upon elimination of our Pension Plan in December 2020. For more information, see Note 4, Income Taxes and Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(b) The following items negatively impacted 2018 net income:
•$23.3 million pre-tax loss from non-cash pension settlement charges. For more information, see Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
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•$11.5 million pre-tax loss from the sale of two lumber mills and a particleboard plant located in Northeast Oregon, as well as $24.0 million of pre-tax impairment and sale related losses on the Moncure plywood facility upon being classified as held for sale. For additional information, see Note 7, Sale of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•$55.0 million of accelerated depreciation, $2.6 million of construction in progress and spare parts write-offs, and $0.2 million of severance expenses related to the permanent curtailment of LVL production at our Roxboro, North Carolina facility. For additional information, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(c) In 2018 and 2017, net income included $3.8 million and $8.1 million, respectively, of income tax benefits associated with the remeasurement of our deferred tax assets and liabilities at the new federal corporate income tax rate of 21% as of December 22, 2017 (date of enactment of the Tax Cuts and Jobs Act). For more information, see Note 4, Income Taxes, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(d) The following items impacted 2016 net income:
•$8.5 million of income tax benefit primarily associated with the reversal of a valuation allowance on foreign deferred tax assets, net of other tax adjustments.
•$14.3 million pre-tax loss on extinguishment of debt.
•$3.9 million pre-tax settlement expense associated with voluntary lump-sum payments to pension plan participants.
(e) The following table reconciles net income to EBITDA and Adjusted EBITDA for the periods indicated:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016
|  | (millions)
Net income |  | $ | 175 |  | $ | 81 |  | $ | 20 |  | $ | 83 |  | $ | 38
Interest expense |  | 26 |  | 26 |  | 26 |  | 25 |  | 27
Interest income |  | (1) |  | (3) |  | (2) |  | (1) |  | —
Income tax provision |  | 111 |  | 27 |  | 2 |  | 35 |  | 5
Depreciation and amortization |  | 95 |  | 80 |  | 147 |  | 80 |  | 73
EBITDA |  | 407 |  | 212 |  | 193 |  | 223 |  | 142
Change in fair value of interest rate swaps |  | 2 |  | 3 |  | (1) |  | (1) |  | (4)
Loss on extinguishment of debt |  | 14 |  | — |  | — |  | — |  | 14
Adjusted EBITDA |  | $ | 423 |  | $ | 215 |  | $ | 193 |  | $ | 222 |  | $ | 153

We define EBITDA as income before interest (interest expense and interest income), income taxes, and depreciation and amortization. Additionally, we disclose Adjusted EBITDA, which further adjusts EBITDA to exclude the change in fair value of interest rate swaps and loss on extinguishment of debt.
We believe EBITDA and Adjusted EBITDA are meaningful measures because they present a transparent view of our recurring operating performance and allow management to readily view operating trends, perform analytical comparisons, and identify strategies to improve operating performance. We also believe EBITDA and Adjusted EBITDA are useful to investors because they provide a means to evaluate the operating performance of our segments and our Company on an ongoing basis using criteria that are used by our management and because they are frequently used by investors and other interested parties when comparing companies in our industry that have different financing and capital structures and/or tax rates. EBITDA and Adjusted EBITDA, however, are not measures of our liquidity or financial performance under generally accepted accounting principles (GAAP) and should not be considered as alternatives to net income, income from operations, or any other performance measure derived in accordance with GAAP or as alternatives to cash flow from operating activities as a measure of our liquidity. The use of EBITDA and Adjusted EBITDA instead of net income or segment income (loss) have limitations as analytical tools, including the inability to determine profitability; the exclusion of interest expense, interest income, and associated significant cash requirements; and the exclusion of depreciation and amortization, which represent unavoidable operating costs. Management compensates for these limitations by relying on our GAAP results. Our measures of EBITDA and Adjusted EBITDA are not necessarily comparable to other similarly titled captions of other companies due to potential inconsistencies in the methods of calculation.
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(f) For more information regarding our dividends declared, including supplemental dividends of $1.60 per share of our common stock during third quarter 2020 and $1.00 per share of our common stock during each fourth quarter 2019 and third quarter 2018, see Note 14, Stockholders' Equity, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(g) On January 1, 2019, we adopted Accounting Standards Update 2016-02, Leases (Topic 842), using the modified retrospective transition method and used the effective date as our date of initial application. Consequently, leases for reporting periods beginning after January 1, 2019 are presented under Topic 842, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 840. We recorded additional lease liabilities for operating leases of $72.4 million, with an offsetting increase to right-of-use (ROU) assets of approximately $69.2 million as of January 1, 2019. For more information regarding our leases, see Note 11, Leases, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
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ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Understanding Our Financial Information
This Management's Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with our consolidated financial statements and related notes and other financial information appearing elsewhere in this Form 10-K. The following discussion includes statements that are forward-looking statements and are based on the beliefs of our management, as well as assumptions made by, and information currently available to, our management. Actual results could differ materially from those discussed in or implied by forward-looking statements as a result of various factors, including those discussed below and elsewhere in this Annual Report on Form 10-K, particularly in the section entitled "Cautionary Statement Concerning Forward-Looking Statements" and in Item 1A. "Risk Factors." References to "fiscal year" or "fiscal" refer to our fiscal year ending on December 31 in each calendar year.
Overview
Company Background
Boise Cascade is a large, vertically-integrated wood products manufacturer and building materials distributor with widespread operations throughout the United States (U.S.) and one manufacturing facility in Canada. We completed an initial public offering of our common stock on February 11, 2013. We have two reportable segments: (i) Wood Products, which primarily manufactures engineered wood products (EWP) and plywood; and (ii) Building Materials Distribution (BMD), which is a wholesale distributor of building materials. For more information, see Note 3, Revenues, and Note 17, Segment Information, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" and "Item 1. Business" of this Form 10-K. Our products are used in the construction of new residential housing, including single-family, multi-family, and manufactured homes, the repair-and-remodeling of existing housing, the construction of light industrial and commercial buildings, and industrial applications. We have a broad base of customers, which includes a diverse mix of retail lumberyards, home improvement centers, leading wholesalers, specialty distributors, and industrial converters. Our Wood Products and BMD segments are vertically-integrated from wood fiber procurement through distribution. During 2020, approximately 61% of our Wood Products segment sales, or approximately 80% and 24% of our Wood Product segment's EWP and plywood sales volumes, respectively, were to our BMD segment.
Executive Summary
We recorded income from operations of $335.0 million during the year ended December 31, 2020, compared with $136.5 million during the same period in the prior year. In our Wood Products segment, income increased by $73.5 million to $127.7 million for the year ended December 31, 2020, from $54.2 million in 2019. The increase in segment income was due primarily to higher plywood sales prices, as well as higher I-joist sales volumes and lower manufacturing costs. These improvements were offset partially by accelerated depreciation of $15.0 million and other closure-related costs at our Roxboro, North Carolina facility, as well as lower EWP prices and higher wood fiber costs, particularly OSB (used in the manufacture of I-joists). In our BMD segment, income improved $131.3 million to $247.5 million for the year ended December 31, 2020, from $116.2 million for the year ended December 31, 2019, driven by a gross margin increase of $173.0 million, resulting primarily from improved gross margins on commodity products, as well as higher sales of general line products compared with 2019. The margin improvement was offset partially by increased selling and distribution expenses and general and administrative expenses of $35.7 million and $4.2 million, respectively. These changes are discussed further in "Our Operating Results" below.
We ended 2020 with $405.4 million of cash and cash equivalents and $443.8 million of debt. At December 31, 2020, we had $345.2 million of unused committed bank line availability. We generated $120.1 million of cash during the year ended December 31, 2020, as cash provided by operations and issuances of long-term debt was offset partially by debt payments, capital spending, and dividends paid on our common stock. A further description of our cash sources and uses for the comparative periods are discussed in "Liquidity and Capital Resources" below.
As both a manufacturer and a distributor, our 2020 financial results were favorably impacted by higher commodity wood products pricing compared to pricing in 2019. During 2020, our business experienced rapidly evolving market conditions and economic uncertainties surrounding the impact of COVID-19, and various restrictions that limited residential construction activity. In response to COVID-19 uncertainties, early in the second quarter, our Wood Products segment and many other producers in our industry reduced production levels. In addition, many companies involved in the manufacture and distribution
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of building materials dramatically reduced inventory levels in late first quarter and early second quarter in response to falling commodity wood products prices and future demand uncertainty. As restrictions were loosened or rescinded, construction activity resumed mid-second quarter and continued at a robust pace throughout the remainder of 2020. Across commodity product lines, product demand in the third quarter exceeded supply, and producers struggled to restore capacity because of COVID-19 related disruptions and natural disasters, causing significant increases in commodity products prices. In the fourth quarter, composite lumber and panel prices fell sharply during October and November 2020 before a strong pricing rebound in December 2020. Our BMD warehouse sales were strong throughout the third and fourth quarters as our retail lumberyard customers relied on our broad base of inventory and high service levels to minimize their working capital investment given COVID-19 related uncertainties and historically high commodity product prices. In addition, we have had strong demand from our home center customers in response to elevated repair and remodel and "do-it-yourself" activity as people are spending more time at home during the pandemic.
As we begin 2021, Wood Products continues to experience periodic short-term disruptions at many locations due to COVID-19 as we continue to make efforts to restore production rates to pre-COVID-19 levels in response to strong end-product demand, particularly for our EWP. In addition, we have experienced COVID-19 related short-term disruptions at our BMD locations and our activity levels across our distribution network continue to vary widely as COVID-19 impacts geographies across the U.S. to differing degrees, and federal, state, or local restrictions are implemented or rescinded. To date, we have not experienced significant supply chain disruptions that would limit our ability to meet customer delivery commitments or source the necessary raw materials and finished goods needed by our operations. We continue to conduct business with modifications to mill and distribution center housekeeping and cleanliness protocols, employee travel, employee work locations, and virtualization or cancellation of certain sales and marketing events, among other modifications. In addition, we continue to actively monitor evolving developments and may take actions that alter our business operations as may be required by federal, state, or local authorities, or that we determine are in the best interests of our employees, customers, suppliers, communities, and stockholders.
While there continues to be a heightened level of economic uncertainty due to the pandemic, low mortgage rates, continuation of work-from-home practices by many in the economy, and demographics in the U.S. have created a favorable demand environment for new residential construction, particularly single-family housing starts, which we expect to continue in 2021. Furthermore, with homeowners spending more time at home, repair and remodel spending may remain elevated as homeowners invest in existing homes. As of February 2021, the Blue Chip Economic Indicators consensus forecast for 2021 single- and multi-family housing starts in the U.S. was 1.51 million units, compared with actual housing starts of 1.38 million in 2020 and 1.29 million in 2019, as reported by the U.S. Census Bureau. Although we believe that current U.S. demographics support the higher level of forecasted housing starts, and many national home builders are reporting strong near-term backlogs, the impacts of COVID-19 on residential construction and repair-and-remodeling activity are uncertain.
Strong demand when coupled with capacity constraints in late fourth quarter 2020 and early first quarter 2021 created supply/demand imbalances in the marketplace and historically high pricing levels for commodity lumber and panel products. As a wholesale distributor of a broad mix of commodity products and a manufacturer of certain commodity products, our sales and profitability are influenced by changes in commodity product prices.
Factors That Affect Our Operating Results and Trends
Our results of operations and financial performance are influenced by a variety of factors, including: (i) the commodity nature of the products we manufacture and distribute; (ii) general economic and industry conditions affecting demand; and (iii) cost and availability of raw materials, including wood fiber and glues and resins. These factors have historically produced cyclicality in our results of operations, and we expect this cyclicality to continue in future periods.
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Commodity Nature of Our Products
Many of the building products we manufacture or distribute, including OSB, plywood, and lumber, are commodities that are widely available from other manufacturers or distributors with prices and volumes determined frequently in an auction market based on participants' perceptions of short-term supply and demand factors. At times, the price for any one or more of the products we produce or distribute may fall below our cash production or purchase costs, requiring us to either incur short-term losses on product sales or cease production at one or more of our manufacturing facilities. Therefore, our profitability with respect to these commodity products depends, in significant part, on effective facilities maintenance programs, and on managing our cost structure, particularly raw materials and labor, which represent the largest components of our operating costs. Composite structural panel and lumber prices have been volatile historically.
The following table provides changes in the average composite panel, including certain panel subcategories, and average composite lumber prices as reflected by Random Lengths, an industry publication, for the periods noted below. In addition to the year-over-year average price changes, 2020 and 2018 were years of exceptional price volatility when compared to historical results.

| Year Ended December 31
| 2020 versus 2019 |  | 2019 versus 2018 |  | 2018 versus 2017
Increase (decrease) in composite panel prices | 54% |  | (27)% |  | 10%
Increase (decrease) in Western Fir plywood prices | 22% |  | (16)% |  | 19%
Increase (decrease) in Southern Pine plywood prices | 29% |  | (18)% |  | 14%
Increase (decrease) in OSB prices | 99% |  | (38)% |  | —%
Increase (decrease) in composite lumber prices | 57% |  | (23)% |  | 12%

In our Wood Products segment, we manufacture plywood, but not OSB, and therefore our reported prices may not trend with the overall composite panel price index. Our BMD segment purchases and resells a broad mix of commodity products with periods of increasing prices providing the opportunity for higher sales and increased margins, while declining price environments may result in declines in sales and profitability. For further discussion of the impact of commodity prices on historical periods, see "Our Operating Results" in this Management's Discussion and Analysis of Financial Condition and Results of Operations.
General Economic and Industry Conditions Affecting Demand
The level of housing starts is especially important to our results of operations. New residential construction activity has historically been volatile with demand influenced by several economic conditions, including domestic population growth, immigration rates, residential vacancy and foreclosure rates, demand for second homes, and existing home prices. The pace of household formation rates and residential repair-and-remodeling activity will also be affected by the economic impact of COVID-19, employment levels, wage growth, housing affordability, availability of construction labor, materials, and building lots, prospective home buyers' access to financing, consumer confidence, as well as other factors. Improved household formation rates in turn will help stimulate new construction. In addition, the size of new single-family residences as well as the mix of single and multi-family starts will influence product consumption. Increases in EWP demand will be highly influenced by single-family housing starts.
Industry supply for the products we produce and distribute is influenced primarily by price-induced changes in the operating rates of existing facilities, but is also influenced over time by the introduction of new product technologies, capacity additions and closures, restart of idled capacity, and log availability. The balance of supply and demand in the U.S. is also heavily influenced by imported products, principally from Canada and South America.
We believe that our product line diversification provides us some protection from declines in new residential construction. Our products are used not only in new residential construction, but also in residential repair-and-remodeling projects. We believe the overall age of the U.S. housing stock, resales of existing homes, increased focus on making homes more energy efficient, rising home prices, and availability of consumer loans at low interest rates will continue to support long-term growth in repair-and-remodeling expenditures and increased demand through home improvement centers and our other customers that service professional contractors.
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Cost and Availability of Raw Materials
Our principal raw material is wood fiber, which accounted for approximately 42% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation), for our Wood Products segment in 2020. Logs comprised approximately 73% of our wood fiber costs during 2020, and we satisfy our log requirements through a combination of purchases under supply agreements, open-market purchases, and purchases pursuant to contracts awarded under public auctions.
The following table provides changes in our average per-unit log costs for the periods noted below:

| Year Ended December 31
| 2020 versus 2019 |  | 2019 versus 2018 |  | 2018 versus 2017
Increase (decrease) in per-unit log costs | 1% |  | (10)% |  | 13%

Our log requirements and our access to supply, as well as the cost of obtaining logs, are subject to change based on, among other things, the availability of logs in each of our operating areas, our operating schedules, competition from other manufacturers, the effect of governmental laws and regulations, impacts of weather or fire on log availability, and the status of environmental appeals. Per-unit log costs in the western U.S. are higher than per-unit log costs in the southern U.S. due to higher harvest and delivery costs, as well as various supply-side constraints, including seasonal weather-related restrictions, slower growth cycles, and a higher proportion of federal and state timberland ownership. Our aggregate cost of obtaining logs is also affected by fuel costs and the distance of the log source from our facilities, as we are often required to arrange for harvesting and delivery of the logs we purchase from the source to our facilities.
We also purchase OSB, which is used as the vertical web to assemble I-joists, from a supplier with multiple locations throughout North America. OSB accounted for approximately 7% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation) for our Wood Products segment in 2020. OSB is a commodity, and prices have been historically volatile in response to industry capacity and operating rates, inventory levels in various distribution channels, and seasonal demand patterns. Sustained periods of high OSB costs lead to higher costs of our I-joist production.
Wood fiber also includes, to a lesser extent than OSB, lumber purchased from third parties for I-joist production at our Canadian EWP facility and for production at our laminated beam plant in Idaho. Lumber input costs are subject to similar commodity-based volatility characteristics noted above for OSB.
We also use various resins and glues in our manufacturing processes, which accounted for approximately 5% of the aggregate amount of materials, labor, and other operating expenses (excluding depreciation) for our Wood Products segment in 2020. The costs of resins and glues are influenced by changes in the prices of raw material input costs, primarily fossil fuel products.
We purchase many of our raw materials through long-term contracts that contain price adjustment mechanisms that take into account changes in market prices. Therefore, although our long-term contracts provide us with supplies of raw materials and energy that are more stable than open-market purchases, in many cases, they may not alleviate fluctuations in market prices.
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Our Operating Results
The following tables set forth our operating results in dollars and as a percentage of sales for the years ended December 31, 2020, 2019, and 2018:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (millions)
Sales | $ | 5,474.8 |  |  | $ | 4,643.4 |  |  | $ | 4,995.3 |
Costs and expenses |  |  |  |  |
Materials, labor, and other operating expenses (excluding depreciation) | 4,536.1 |  |  | 3,965.8 |  |  | 4,307.6 |
Depreciation and amortization | 95.2 |  |  | 80.1 |  |  | 146.8 |
Selling and distribution expenses | 428.3 |  |  | 390.7 |  |  | 363.1 |
General and administrative expenses | 78.6 |  |  | 71.1 |  |  | 68.8 |
Loss on sale and curtailment of facilities | 1.7 |  |  | — |  |  | 38.3 |
Other (income) expense, net | — |  |  | (0.8) |  |  | (1.4) |
| 5,139.8 |  |  | 4,506.9 |  |  | 4,923.3 |
Income from operations | $ | 335.0 |  |  | $ | 136.5 |  |  | $ | 72.0 |
| (percentage of sales)
Sales | 100.0 | % |  | 100.0 | % |  | 100.0 | %
Costs and expenses |  |  |  |  |
Materials, labor, and other operating expenses (excluding depreciation) | 82.9 | % |  | 85.4 | % |  | 86.2 | %
Depreciation and amortization | 1.7 |  |  | 1.7 |  |  | 2.9 |
Selling and distribution expenses | 7.8 |  |  | 8.4 |  |  | 7.3 |
General and administrative expenses | 1.4 |  |  | 1.5 |  |  | 1.4 |
Loss on sale and curtailment of facilities | — |  |  | — |  |  | 0.8 |
Other (income) expense, net | — |  |  | — |  |  | — |
| 93.9 | % |  | 97.1 | % |  | 98.6 | %
Income from operations | 6.1 | % |  | 2.9 | % |  | 1.4 | %

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Sales Volumes and Prices
Set forth below are historical U.S. housing starts data, segment sales volumes and average net selling prices for the principal products sold by our Wood Products segment, and sales mix and gross margin information for our Building Materials Distribution segment for the years ended December 31, 2020, 2019, and 2018.

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
U.S. Housing Starts (a) |  |  |  |  |
Single-family | 990.1 |  |  | 887.7 |  |  | 875.8 |
Multi-family | 389.9 |  |  | 402.3 |  |  | 374.1 |
| 1,380.0 |  |  | 1,290.0 |  |  | 1,249.9 |
| (millions)
Segment Sales |  |  |  |  |
Wood Products | $ | 1,323.9 |  |  | $ | 1,275.2 |  |  | $ | 1,533.3 |
Building Materials Distribution | 4,952.0 |  |  | 4,137.7 |  |  | $ | 4,287.7 |
Intersegment eliminations | (801.1) |  |  | (769.5) |  |  | (825.7) |
| $ | 5,474.8 |  |  | $ | 4,643.4 |  |  | $ | 4,995.3 |
| (millions)
Wood Products |  |  |  |  |
Sales Volumes |  |  |  |  |
Laminated veneer lumber (LVL) (cubic feet) | 17.3 |  |  | 17.9 |  |  | 17.7 |
I-joists (equivalent lineal feet) | 241 |  |  | 227 |  |  | 237 |
Plywood (sq. ft.) (3/8" basis) | 1,253 |  |  | 1,337 |  |  | 1,423 |
Lumber (board feet) | 86 |  |  | 85 |  |  | 153 |
| (dollars per unit)
Wood Products |  |  |  |  |
Average Net Selling Prices |  |  |  |  |
LVL (cubic foot) | $ | 18.26 |  |  | $ | 18.66 |  |  | $ | 18.11 |
I-joists (1,000 equivalent lineal feet) | 1,244 |  |  | 1,270 |  |  | 1,218 |
Plywood (1,000 sq. ft.) (3/8" basis) | 347 |  |  | 266 |  |  | 351 |
Lumber (1,000 board feet) | 612 |  |  | 611 |  |  | 588 |
| (percentage of Building Materials Distribution sales)
Building Materials Distribution |  |  |  |  |
Product Line Sales |  |  |  |  |
Commodity | 46.6 | % |  | 41.7 | % |  | 48.3 | %
General line | 35.6 | % |  | 38.2 | % |  | 33.1 | %
Engineered wood products | 17.8 | % |  | 20.1 | % |  | 18.6 | %
Gross margin percentage (b) | 14.0 | % |  | 12.6 | % |  | 11.3 | %

_______________________________________
(a) Actual U.S. housing starts as reported by the U.S. Census Bureau.
(b) We define gross margin as "Sales" less "Materials, labor, and other operating expenses (excluding depreciation)." Substantially all costs included in "Materials, labor, and other operating expenses (excluding depreciation)" for our Building Materials Distribution segment are for inventory purchased for resale. Gross margin percentage is gross margin as a percentage of segment sales.
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2020 Compared With 2019
Sales
For the year ended December 31, 2020, total sales increased $831.4 million, or 18%, to $5,474.8 million from $4,643.4 million during the year ended December 31, 2019. As described below, the increase in sales was driven by the changes in sales prices and volumes for the products we manufacture and distribute. During 2020, U.S. housing starts increased 7%, with single-family starts up 12%, compared with 2019. Single-family housing starts are the primary driver of our sales volumes and typically result in higher building product utilization per start than multi-family units. For the year ended December 31, 2020, average composite lumber and average composite panel prices were 57% and 54% higher, respectively, compared with the same period in the prior year, as reflected by Random Lengths composite lumber and panel pricing. These increases in composite commodity pricing resulted in higher sales in both of our segments, as noted below.
Wood Products. During the year ended December 31, 2020, sales, including sales to our BMD segment, increased $48.7 million, or 4%, to $1,323.9 million from $1,275.2 million in 2019. The increase in sales was driven primarily by higher plywood prices of 30%, resulting in increased sales of $101.0 million. In addition, higher sales volumes for I-joists of 6% resulted in increased sales of $18.1 million. These increases were offset partially by lower sales volumes for plywood and LVL of 6% and 3%, respectively, resulting in decreased sales of $22.4 million and $10.4 million, respectively. The lower volume for plywood sales reflects our continued work to optimize veneer into EWP production, as well as periodic short-term disruptions related to COVID-19. Net sales prices for LVL and I-joists each decreased 2%, resulting in decreased sales of $6.9 million and $6.2 million, respectively. In addition, other sales, including by-products, freight, and logs, decreased compared with the prior year period.
Building Materials Distribution. During the year ended December 31, 2020, sales increased $814.3 million, or 20%, to $4,952.0 million from $4,137.7 million in 2019. Compared with the prior year, the overall increase in sales was driven by sales price and sales volume increases of 13% and 7%, respectively. By product line, commodity sales increased 34%, or $584.4 million, general line product sales increased 11%, or $181.7 million, and sales of EWP (substantially all of which is sourced through our Wood Products segment) increased 6%, or $48.2 million.
Costs and Expenses
Materials, labor, and other operating expenses (excluding depreciation) increased $570.3 million, or 14%, to $4,536.1 million for the year ended December 31, 2020, compared with $3,965.8 million during the prior year. In our Wood Products segment, materials, labor, and other operating expenses decreased, due to lower sales volumes, offset partially by higher per-unit costs of OSB (used in the manufacture of I-joists) of 36%, compared with 2019. Materials, labor, and other operating expenses as a percentage of sales (MLO rate) in our Wood Products segment decreased by 640 basis points, which was primarily due to higher plywood sales prices, resulting in improved leveraging of manufacturing costs, including labor and wood fiber costs. In BMD, the increase in materials, labor, and other operating expenses was driven by higher purchased materials costs as a result of higher commodity prices and higher sales volumes, compared with 2019. However, the BMD segment MLO rate improved 140 basis points compared with 2019 due primarily to improved gross margin percentages for our commodity product sales, driven by an increasing commodity price environment during the majority of 2020.
Depreciation and amortization expenses increased $15.0 million, or 19%, to $95.2 million for the year ended December 31, 2020, compared with $80.1 million during the prior year. The increase was due primarily to recording accelerated depreciation of $15.0 million in first quarter 2020 to fully depreciate the curtailed I-joist production assets at our Roxboro, North Carolina facility. For additional information, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Selling and distribution expenses increased $37.5 million, or 10%, to $428.3 million for the year ended December 31, 2020, compared with $390.7 million for the prior year. The increase was due primarily to higher employee-related expenses, mostly incentive compensation, of $34.0 million, as well as higher shipping and handling costs of $3.3 million. These increases were offset partially by lower travel and entertainment expenses of $5.7 million.
General and administrative expenses increased $7.6 million, or 11%, to $78.6 million for the year ended December 31, 2020, compared with $71.1 million for the prior year. The increase was due primarily to higher employee-related expenses, mostly incentive compensation, of $11.8 million, offset partially by lower travel and entertainment expenses of $2.2 million and other discretionary expenses.
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Loss on sale and curtailment of facilities of $1.7 million for the year ended December 31, 2020, represents various closure-related costs due to the permanent curtailment of I-joist production at our Roxboro, North Carolina, facility. For additional information, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Income From Operations
Income from operations increased $198.6 million to $335.0 million for the year ended December 31, 2020, compared with $136.5 million for the year ended December 31, 2019.
Wood Products. For the year ended December 31, 2020, segment income increased $73.5 million to $127.7 million from $54.2 million for the year ended December 31, 2019. The increase in segment income was due primarily to higher plywood sales prices, as well as higher I-joist sales volumes and lower manufacturing costs. These improvements were offset partially by accelerated depreciation of $15.0 million and other closure-related costs of $1.7 million at our Roxboro, North Carolina facility, as well as lower EWP prices and higher wood fiber costs. In addition, selling and distribution expenses and general and administrative expenses increased $1.9 million and $0.6 million, respectively.
Building Materials Distribution. For the year ended December 31, 2020, segment income increased $131.3 million to $247.5 million from $116.2 million for the year ended December 31, 2019. The increase in segment income was driven by a gross margin increase of $173.0 million, resulting primarily from improved gross margins on commodity products, as well as higher sales of general line products compared with 2019. The margin improvement was offset partially by increased selling and distribution expenses and general and administrative expenses of $35.7 million and $4.2 million, respectively.
Corporate. Unallocated corporate expenses increased $6.2 million to $40.2 million for the year ended December 31, 2020, from $34.0 million for the year ended December 31, 2019. The increase was due primarily to higher incentive compensation and business interruption losses. As part of our self-insured risk retention program, corporate absorbed approximately $3.5 million of estimated business interruption losses at Wood Products facilities in 2020. The losses resulted from downtime at our Louisiana manufacturing facilities due to hurricanes and from a fire-related production disruption at our Chester, South Carolina, plywood plant.
Other
Pension expense (excluding service costs). In December 2020, we eliminated our qualified defined benefit pension plan (Pension Plan). The process of eliminating the Pension Plan included lump-sum payments made to eligible plan participants at their election and the purchase of a buy-out group annuity contract (Buy-Out) from The Prudential Insurance Company of America (Prudential), which was funded with plan assets. When the Buy-Out became effective on December 31, 2020, we irrevocably transferred to Prudential the future benefit obligations and annuity administration for all remaining plan participants (or their beneficiaries) in the Pension Plan. These transactions fully eliminated the liabilities of our Pension Plan, resulting in a non-cash settlement charge of $6.2 million in fourth quarter 2020.
On September 30, 2019, we transferred $19.8 million of our Pension Plan assets to Prudential for the purchase of a group annuity contract. Under the arrangement, Prudential assumed ongoing responsibility for administration and benefit payments for approximately 10% of our U.S. qualified pension plan projected benefit obligations at the time of the transaction. As a result of the transaction, we recognized a non-cash settlement charge of $1.3 million in third quarter 2019.
For additional information related to our Pension Plan, see Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Change in fair value of interest rate swaps. For information related to our interest rate swaps, see the discussion under "Disclosures of Financial Market Risks" and "Financial Instruments" included in this "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
Loss on extinguishment of debt. In connection with the issuance of the $400 million of 4.875% senior notes due July 1, 2030 (2030 Notes), we commenced a tender offer to purchase any and all of our $350 million aggregate principal amount of 5.625% senior notes due September 1, 2024 (2024 Notes) then outstanding. On July 27, 2020, we accepted for purchase an aggregate principal amount of $212.5 million of the 2024 Notes that were tendered. On September 1, 2020, we redeemed the remaining $137.5 million in aggregate principal amount of the 2024 Notes outstanding. In connection with these transactions, we recognized a pre-tax loss on the extinguishment of debt of $14.0 million during 2020. The loss includes $10.8 million in debt extinguishment premium payments and $3.2 million for the write-off of unamortized deferred financing costs. For more
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information related to our indebtedness, see Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
2019 Compared With 2018
Sales
For the year ended December 31, 2019, total sales decreased $351.9 million, or 7%, to $4,643.4 million from $4,995.3 million during the year ended December 31, 2018. As described below, the decline in sales was driven by the changes in sales prices and volumes for the products we manufacture and distribute. During 2019, U.S. housing starts increased 3%, with single- family starts up 1%, compared with 2018. Single-family housing starts are the primary driver of our sales volumes and typically result in higher building product utilization per start than multi-family units. For the year ended December 31, 2019, average composite panel and average composite lumber prices were 27% and 23% lower, respectively, compared with the same period in the prior year, as reflected by Random Lengths composite panel and lumber pricing. These declines in composite commodity pricing resulted in lower sales in both of our segments, as noted below.
Wood Products. During the year ended December 31, 2019, sales, including sales to our BMD segment, decreased $258.1 million, or 17%, to $1,275.2 million from $1,533.3 million in 2018. The decrease in sales was driven primarily by lower sales prices and sales volumes for plywood of 24% and 6%, respectively, resulting in decreased sales of $113.1 million and $30.0 million, respectively. The lower sales volume for plywood was mostly due to weaker market conditions and downtime for facility capital improvements, as well as the sale of the Moncure plywood facility on March 1, 2019. In addition, sales volumes for I-joists decreased 4% resulting in decreased sales of $12.7 million. The decrease in sales was also attributable to lower sales volumes of lumber and particleboard of $39.5 million and $35.6 million, respectively, due to the sale or closure of three lumber mills and our particleboard plant during 2018. The remaining decreases were due primarily to lower sales volumes of byproducts and other. These decreases were offset partially by an increase in I-joists sales prices of 4% resulting in increased sales of $11.7 million. Net sales prices and sales volumes for LVL also increased 3% and 1%, respectively, resulting in increased sales of $9.8 million and $4.3 million.
Building Materials Distribution. During the year ended December 31, 2019, sales decreased $150.0 million, or 3%, to $4,137.7 million from $4,287.7 million in 2018. Compared with the prior year, the overall decrease in sales was driven by a sales price decrease of 9%, offset partially by a sales volume increase of 6%. Excluding the impact of the acquisition of wholesale building material distribution locations in Nashville, Tennessee, Medford, Oregon, and Cincinnati, Ohio during 2018, and the Birmingham, Alabama acquisition in 2019 (the "BMD Acquisitions"), BMD sales would have decreased 6%. By product line, commodity sales decreased 17%, or $344.8 million, general line product sales increased 11%, or $159.1 million, and sales of EWP (substantially all of which is sourced through our Wood Products segment) increased 4%, or $35.7 million.
Costs and Expenses
Materials, labor, and other operating expenses (excluding depreciation) decreased $341.8 million, or 8%, to $3,965.8 million for the year ended December 31, 2019, compared with $4,307.6 million during the prior year. In our Wood Products segment, the decrease in materials, labor, and other operating expenses was primarily driven by lower sales volumes, as well as lower per-unit costs of OSB (used in the manufacture of I-joists) and logs of 33% and 10%, respectively, compared with 2018. However, the MLO rate in our Wood Products segment increased by 100 basis points, which was primarily due to lower plywood sales prices, resulting in decreased leveraging of labor and other manufacturing costs, offset partially by lower wood fiber costs. In BMD, the decrease in materials, labor, and other operating expenses was driven by lower purchased materials costs as a result of lower commodity prices, compared with 2018. However, the BMD segment MLO rate improved 130 basis points compared with 2018 driven primarily by a greater mix of general line sales, which have higher margins than commodity products. In addition, margin percentages for our commodity product sales improved because of a generally stable commodity pricing environment in 2019.
Depreciation and amortization expenses decreased $66.7 million, or 45%, to $80.1 million for the year ended December 31, 2019, compared with $146.8 million during the prior year. The decrease was due primarily to recording accelerated depreciation of $55.0 million in fourth quarter 2018 to fully depreciate the curtailed LVL production assets at our Roxboro, North Carolina, facility. In addition, the decrease was attributed to discontinued depreciation on certain manufacturing facilities curtailed and sold in 2018, offset partially by incremental depreciation on capital expenditures. For more information on the curtailed and sold assets, see Note 6, Curtailment of Manufacturing Facilities and Note 7, Sale of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
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Selling and distribution expenses increased $27.6 million, or 8%, to $390.7 million for the year ended December 31, 2019, compared with $363.1 million for the prior year. The increase was due mostly to higher employee-related expenses and shipping and handling costs of $17.9 million and $5.0 million, respectively, driven by increased sales volumes in our BMD segment, which includes the impact of the BMD Acquisitions.
General and administrative expenses increased $2.3 million, or 3%, to $71.1 million for the year ended December 31, 2019, compared with $68.8 million for the prior year. The increase was due primarily to higher base compensation expenses and information technology related expenses of $2.6 million and $0.4 million, respectively, offset partially by lower professional service related expenses of $1.1 million.
Loss on sale and curtailment of facilities of $38.3 million for the year ended December 31, 2018, relates to the following:
•Impairment and sale related losses of $24.0 million upon classifying the Wood Products facility in Moncure, North Carolina, as held for sale (Moncure Impairment Loss) and a loss of $11.5 million related to the sale of Wood Products facilities in Northeast Oregon (NEO Impairment Loss). For additional information, related to the sale of our manufacturing facilities, see Note 7, Sale of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•Construction in progress and spare parts write-offs of $2.6 million, as well as $0.2 million of severance-related expenses, due to the permanent curtailment of LVL production at our Roxboro, North Carolina, facility. For additional information, see Note 6, Curtailment of Manufacturing Facilities, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
For the year ended December 31, 2019, other (income) expense, net, was $0.8 million of income, which primarily relates to gains on various sales of property and equipment. For the year ended December 31, 2018, other (income) expense, net, was $1.4 million of income, which primarily included a gain on the sale of property in our Wood Products segment.
Income From Operations
Income from operations increased $64.5 million to $136.5 million for the year ended December 31, 2019, compared with $72.0 million for the year ended December 31, 2018.
Wood Products. For the year ended December 31, 2019, segment income was $54.2 million compared to a segment loss of $10.0 million for the year ended December 31, 2018. The segment loss in 2018 included $55.0 million of accelerated depreciation and $38.3 million of facility sale and curtailment related losses, discussed above. Excluding these losses, segment income decreased approximately $29 million due to lower sales prices of plywood, offset partially by lower wood fiber costs, particularly OSB (used in the manufacture of I-joists) and logs, as well as higher EWP prices. In addition, general and administrative expenses also decreased $3.6 million. Excluding the accelerated depreciation in 2018, depreciation and amortization expense decreased $14.3 million due primarily to discontinued depreciation on manufacturing facilities curtailed and sold in 2018.
Building Materials Distribution. For the year ended December 31, 2019, segment income increased $3.7 million to
$116.2 million from $112.5 million for the year ended December 31, 2018. The increase in segment income was driven primarily by a gross margin increase of $37.0 million, resulting from higher sales of general line products and improved gross margins on commodity products compared with 2018. The majority of the improvement in gross margins was offset by increased selling and distribution expenses and depreciation and amortization of $29.3 million and $2.5 million, respectively.
Corporate. Unallocated corporate expenses increased $3.5 million to $34.0 million for the year ended December 31, 2019, from $30.5 million for the year ended December 31, 2018. The increase was primarily due to higher employee-related expenses and other professional service expenses of $2.3 million and $1.0 million, respectively.
Other
Pension expense (excluding service costs). On September 30, 2019, April 25, 2018, and August 10, 2018, we transferred $19.8 million, $151.8 million, and $124.8 million, respectively, of our Pension Plan assets to Prudential for the purchase of group annuity contracts. Under the arrangements, Prudential assumed ongoing responsibility for administration and benefit payments of the related transferred Pension Plan obligations. As a result of the transactions, we recognized non-cash pension settlement charges of $1.3 million and $23.3 million, respectively, for the years ended December 31, 2019 and 2018.
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For additional information related to the transfer of pension plan assets, see Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Income Tax Provision
For the years ended December 31, 2020, 2019, and 2018, we recorded $111.3 million, $27.3 million, and $1.6 million, respectively, of income tax expense and had an effective rate of 38.9%, 25.2%, and 7.4%, respectively. Our rate is affected by recurring items, such as state income taxes, and discrete items that may occur in any given year but are not consistent from year to year.
During the year ended December 31, 2020, the primary reasons for the difference between the federal statutory income tax rate of 21% and the effective tax rate were the effect of the following:
•A $38.8 million increase in income tax expense, or an effect of 13.5%, from the required release of stranded tax effects upon elimination of our Pension Plan in December 2020 (Plan Termination). For additional information related to the Plan Termination and the related release of stranded tax effects, see Note 4, Income Taxes, and Note 12, Retirement and Benefit Plans, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
•A $12.3 million increase in income tax expense, or an effect of 4.3%, from state income taxes.
During the year ended December 31, 2019, the primary reasons for the difference between the federal statutory income tax rate of 21% and the effective tax rate were the effect of the following:
•A $4.4 million increase in income tax expense, or an effect of 4.1%, from state income taxes.
•A $1.7 million increase in income tax expense, or an effect of 1.6%, from permanent differences, including meals and entertainment and nondeductible executive compensation.
•A $1.3 million reduction in income tax expense, or an effect of 1.2%, from tax credits and excess tax benefits of share-based payment awards.
During the year ended December 31, 2018, the primary reasons for the difference between the federal statutory income tax rate of 21% and the effective tax rate were the effect of the following:
•A $3.8 million reduction in income tax expense, or an effect of 17.2%, resulting from the remeasurement of deferred income taxes to the new federal statutory rate of 21%, which mostly relates to a $20.0 million discretionary pension contribution made during 2018, for which we received a tax deduction at the 2017 federal income tax rate of 35%.
•A $1.7 million reduction in income tax expense, or an effect of 7.8%, from excess tax benefits of share-based payment awards.
•A $0.7 million increase in income tax expense, or an effect of 3.4%, from state income taxes.
•A $1.5 million increase in income tax expense, or an effect of 6.9%, from permanent differences, including meals and entertainment and nondeductible executive compensation.
Industry Mergers and Acquisitions
On November 19, 2020, West Fraser Timber Co. Ltd. (West Fraser) and Norbord Inc. (Norbord) announced a definitive agreement pursuant to which West Fraser will acquire all of the shares of Norbord. The acquisition closed during the first quarter of 2021. West Fraser supplies product to our BMD segment, and Norbord is a supplier to both our Wood Products and BMD segments. We believe we have good relationships with these vendors and we do not expect the transaction to have a material impact on our future results of operations.
On August 27, 2020, Builders FirstSource, Inc. (BFS) and BMC Stock Holdings (BMC) announced a definitive merger agreement. The merger closed in early January 2021. BFS and BMC are both customers of ours. We believe we have good relationships with these customers. Because this transaction closed recently, we cannot yet assess the impact, if any, this customer combination may have on our future results of operations.
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Liquidity and Capital Resources
We ended 2020 with $405.4 million of cash and cash equivalents and $443.8 million of long-term debt. At December 31, 2020, we had $750.6 million of available liquidity (cash and cash equivalents and undrawn committed bank line availability). Our cash and cash equivalents increased by $120.1 million during the year ended December 31, 2020, as cash provided by operations and issuances of long-term debt were offset partially by debt payments, capital spending, dividends paid on our common stock, and tax withholding payments on stock-based awards, as further discussed below.
At December 31, 2020, our cash was invested in high-quality, short-term investments, which we record in "Cash and cash equivalents." The majority of our cash and cash equivalents is invested in money market funds that are broadly diversified and invested in high-quality, short-duration securities, including commercial paper, certificates of deposit, U.S. government agency securities, and similar instruments. We have significant amounts of cash and cash equivalents that are in excess of federally insured limits. Though we have not experienced any losses on our cash and cash equivalents to date and we do not anticipate incurring any losses, we cannot be assured that we will not experience losses on our short-term investments.
We believe that our cash flows from operations, combined with our current cash levels and available borrowing capacity, will be adequate to fund debt service requirements and provide cash, as required, to support our ongoing operations, capital expenditures, funding of acquisitions, lease obligations, working capital, and to pay cash dividends to holders of our common stock over the next 12 months. We expect to fund our seasonal and intra-month working capital requirements in 2021 from cash on hand and, if necessary, borrowings under our revolving credit facility. Consistent with our historical patterns, we expect working capital increases to use cash in the first quarter of 2021.
Sources and Uses of Cash
We generate cash primarily from sales of our products, as well as short-term and long-term borrowings. Our primary uses of cash are for expenses related to the manufacture and distribution of building products, including inventory purchased for resale, wood fiber, labor, energy, and glues and resins. In addition to paying for ongoing operating costs, we use cash to invest in our business, service our debt, pay dividends, repurchase our common stock, and meet our contractual obligations and commercial commitments. Below is a discussion of our sources and uses of cash for operating activities, investing activities, and financing activities.

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
Net cash provided by operations | $ | 294,516 |  |  | $ | 245,647 |  |  | $ | 163,611 |
Net cash used for investment | (78,716) |  |  | (94,065) |  |  | (89,257) |
Net cash used for financing | (95,655) |  |  | (58,016) |  |  | (59,823) |

Operating Activities
2020 Compared With 2019
In 2020, our operating activities generated $294.5 million of cash, compared with $245.6 million in 2019. The $48.9 million increase in cash provided by operations in 2020 relates primarily to the following:
•A $131.3 million increase in income in our BMD segment and a $73.5 million increase in income in our Wood Products segment. See "Operating Results" above for a discussion on our results for 2020.
•A $35.7 million increase in working capital during 2020, compared with a $47.4 million decrease in working capital during 2019. Working capital is subject to cyclical operating needs, seasonal buying patterns for inventory purchased for resale and logs, the timing of the collection of receivables, and the timing of payment of payables and expenses. The increase in working capital in 2020 was primarily attributable to higher receivables and inventories, offset partially by an increase in accounts payable and accrued liabilities. The increase in receivables in 2020 primarily reflects increased sales of approximately 55%, comparing sales for the month of December 2020 with sales for the month of December 2019. Inventories increased in 2020 primarily due to an increase in finished goods inventory in our BMD segment. However, inventories in our Wood Products segment decreased in 2020 due to strong product demand, lower log inventory, and reduced production levels as a result of periodic short-term disruptions at many
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locations due to COVID-19. The decrease in working capital in 2019 was primarily attributable to decreased inventories and higher accounts payable. Inventories decreased in 2019, particularly in our BMD segment, as a result of weaker commodity pricing during the period. The increase in accounts payable and accrued liabilities in 2020 was greater than the 2019 increase, reflecting the increase in inventories as of December 31, 2020, and higher incentive compensation accruals.
•A $76.5 million increase in cash paid for income taxes, net of refunds. During 2020, cash paid for taxes, net of refunds received was $75.1 million, compared to income tax refunds received, net of taxes paid of $1.4 million in 2019. The increase in cash paid for income taxes is primarily due to an increase in income from operations.
•An increase in cash contributions to our pension plans of $7.5 million. During 2020, we used $12.8 million of cash to make pension contributions, compared with $5.2 million during 2019.
2019 Compared With 2018
In 2019, our operating activities generated $245.6 million of cash, compared with $163.6 million in 2018. The $82.0 million increase in cash provided by operations in 2019 relates primarily to the following:
•A $47.4 million decrease in working capital during 2019, compared with a $41.7 million increase in working capital during 2018. Working capital is subject to cyclical operating needs, seasonal buying patterns for inventory purchased for resale and logs, the timing of the collection of receivables, and the timing of payment of payables and expenses. The decrease in working capital in 2019 was primarily attributable to decreased inventories and higher accounts payable. The decrease in inventories provided $40.2 million of cash during 2019, compared with a use of cash of $64.2 million in the same period a year ago. Inventories decreased during 2019 as inventory in our BMD segment did not increase at the same rate as the comparative prior year period as a result of weaker commodity pricing in 2019. In addition, inventory levels at the end of 2018 were seasonally higher than normal with slower sales in the second half of 2018 due to slower housing activity and concerns regarding further commodity price declines impacting our customers purchasing patterns. The increase in accounts payable and accrued liabilities provided $5.2 million of cash during 2019, compared with a use of cash of $14.5 million in the same period a year ago. The increase in working capital in 2018 was primarily attributable to higher inventories and a decrease in accounts payable and accrued liabilities, offset partially by a decrease in receivables. As discussed above, inventories increased in 2018 primarily due to an increase in finished goods inventory in our BMD segment. The decrease in receivables and increase in inventory in 2018 primarily reflects decreased sales of approximately 12%, comparing sales for the month of December 2018 with sales for the month of December 2017. Accounts payable and accrued liabilities decreased in 2018 primarily due to lower inventory purchases in our BMD segment in December 2018, compared with December 2017.
•A decrease in cash contributions to our pension plans of $20.8 million. During 2019, we used $5.2 million of cash to make pension contributions, compared with $26.1 million during 2018.
•A $15.9 million decrease in cash paid for income taxes, net of refunds. The decrease in cash paid for income taxes is primarily due to an overpayment of taxes in 2018 which was applied to 2019 tax payment requirements.
•A decrease in cash generated by our Wood Products operations. Although operating income in our Wood Products segment increased $64.2 million, the 2018 results include approximately $90 million of non-cash charges including the accelerated depreciation of curtailed LVL production assets at our Roxboro, North Carolina facility, the Moncure Impairment Loss, and the NEO Impairment Loss. See "Operating Results" above for a discussion on our results for 2019 and 2018.
Investment Activities
Net cash used for investing activities was $78.7 million, $94.1 million, and $89.3 million during 2020, 2019, and 2018, respectively.
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2020
During the year ended December 31, 2020, we used approximately $79.4 million of cash for purchases of property and equipment, which included business improvement and quality/efficiency projects, replacement and expansion projects, and ongoing environmental compliance. Quality and efficiency projects include quality improvements, modernization, energy, and cost-saving projects. Included in our 2020 capital spending is the log utilization center improvement project at our plywood and veneer facility in Florien, Louisiana, BMD's door shop expansion in Dallas, Texas, the purchase and improvement of a BMD property in Gallatin, Tennessee, that expands our service capabilities in the Nashville market, and the purchase of a previously leased BMD property in Woodinville, Washington. Purchases of property and equipment also included approximately $1 million for environmental compliance in 2020, and we expect to spend approximately $2 million in environmental compliance related spending in 2021.
We expect capital expenditures in 2021 to total approximately $80 million to $90 million. We expect our capital spending in 2021 will be for business improvement and quality/efficiency projects, replacement projects, and ongoing environmental compliance. This level of capital expenditures could increase or decrease as a result of a number of factors, including acquisitions, efforts to accelerate organic growth, exercise of lease purchase options, our financial results, future economic conditions, and timing of equipment purchases.
2019
During the year ended December 31, 2019, we used approximately $82.7 million of cash for purchases of property and equipment, which included business improvement and quality/efficiency projects, replacement and expansion projects, and ongoing environmental compliance. Quality and efficiency projects include quality improvements, modernization, energy, and cost-saving projects. In 2019, purchases of property and equipment included approximately $2 million for environmental compliance. In addition, we used $15.7 million for the acquisition of a wholesale building materials distribution location in Birmingham, Alabama. For the year ended December 31, 2019, we received asset sales proceeds of $2.5 million, from the sale of a hardwood plywood facility located in Moncure, North Carolina. For additional information related to the sale of our manufacturing facility and acquisition of the distribution facility, see Note 7, Sale of Manufacturing Facilities, and Note 8, Acquisitions, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
2018
During the year ended December 31, 2018, we used approximately $80.0 million of cash for purchases of property and equipment, which included business improvement and quality/efficiency projects, replacement and expansion projects, and ongoing environmental compliance. Quality and efficiency projects include quality improvements, modernization, energy, and cost-saving projects. In 2018, purchases of property and equipment included approximately $1 million for environmental compliance. In addition, we used $25.5 million for the acquisitions of three distribution locations. For the year ended December 31, 2018, we received asset sales proceeds of $15.0 million, from the sale of two lumber mills and a particleboard plant located in Northeast Oregon. For additional information related to the sale of our manufacturing facilities and acquisitions of the distribution facilities, see Note 7, Sale of Manufacturing Facilities, and Note 8, Acquisitions, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Financing Activities
During 2020, our financing activities used $95.7 million of cash. On July 27, 2020, we issued $400 million of 2030 Notes. With proceeds from the 2030 Notes issuance, we retired our $350 million of 2024 Notes and paid-off our American AgCredit term loan of $45.0 million. In connection with the retirement of the 2024 Notes, we made debt extinguishment premium payments of $10.8 million. During 2020, our financing activities also used $79.2 million for common stock dividend payments, $6.2 million for financing costs related to the 2030 Notes, and $3.3 million of tax withholding payments on stock-based awards. See "Dividends on Common Stock" below for further discussion of common stock dividend payments. During 2020, we did not borrow under our revolving credit facility, and therefore have no borrowings outstanding on the facility as of December 31, 2020.
On March 13, 2020, we negotiated an extension of our $350 million revolving credit agreement and our related $50 million term loan. As of December 31, 2020, we have no debt maturities prior to 2025.
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During 2019, our financing activities used $58.0 million of cash, including $54.0 million for common stock dividend payments and $3.6 million of tax withholding payments on stock-based awards. During 2019, we borrowed $5.5 million under our revolving credit facility to fund intra-month working capital needs, which were subsequently repaid during the same period with cash on hand. At December 31, 2019, we had no borrowings outstanding under the revolving credit facility.
During 2018, our financing activities used $59.8 million of cash, including $50.6 million for common stock dividend payments, $5.1 million of tax withholding payments on stock-based awards, and $4.9 million for the repurchase of common stock. During 2018, we borrowed $7.5 million under our revolving credit facility to fund intra-month working capital needs, which were subsequently repaid during the same period with cash on hand. At December 31, 2018, we had no borrowings outstanding under the revolving credit facility.
Debt Structure
For information related to our debt transactions and debt structure, see Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Dividends on Common Stock
On November 14, 2017, our board of directors approved a dividend policy to pay quarterly cash dividends to holders of our common stock. Future quarterly dividend declarations, including amount per share, record date and payment date, will be made at the discretion of our board of directors and will depend upon, among other things, legal capital requirements and surplus, our future operations and earnings, general financial condition, contractual obligations, restrictions imposed by our asset-based credit facility and the indenture governing our senior notes, applicable laws, and other factors that our board of directors may deem relevant. For a description of the restrictions in our asset-based credit facility and the indenture governing our senior notes on our ability to pay dividends, see Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K. The dividend policy may be suspended or canceled at the discretion of the board of directors at any time.
For more information regarding our dividend declarations and payments made during 2020, 2019, and 2018, see Note 14, Stockholders' Equity, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
Stock Repurchase Program
For information related to our stock repurchases, see Note 14, Stockholders' Equity, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
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Contractual Obligations
In the table below, we set forth our contractual obligations as of December 31, 2020. Some of the amounts included in the table are based on management's estimates and assumptions about these obligations, including their duration, the possibility of renewal, anticipated actions by third parties, and other factors. Because these estimates and assumptions are necessarily subjective, our actual payments may vary from those reflected in the table. Purchase orders made in the ordinary course of business are excluded from the table below. Any amounts for which we are liable under purchase orders are reflected on the Consolidated Balance Sheets as accounts payable and accrued liabilities.

| Payments Due by Period
| 2021 |  | 2022-2023 |  | 2024-2025 |  | Thereafter |  | Total
| (millions)
Long-term debt (a) | $ | — |  |  | $ | — |  |  | $ | 50.0 |  |  | $ | 400.0 |  |  | $ | 450.0 |
Interest (b) | 20.0 |  |  | 39.9 |  |  | 39.6 |  |  | 97.5 |  |  | 197.0 |
Operating leases (c) | 13.6 |  |  | 25.1 |  |  | 20.6 |  |  | 25.5 |  |  | 84.9 |
Finance leases (c) | 3.9 |  |  | 7.9 |  |  | 7.6 |  |  | 37.8 |  |  | 57.2 |
Purchase obligations |  |  |  |  |  |  |  |  |
Raw materials (d) | 41.6 |  |  | 75.1 |  |  | 49.0 |  |  | 48.7 |  |  | 214.4 |
Other | 3.2 |  |  | 2.3 |  |  | 0.2 |  |  | — |  |  | 5.7 |
Other long-term liabilities reflected on our Balance Sheet (e) |  |  |  |  |  |  |  |  |
Compensation and benefits, including pension funding obligations (f) | 7.9 |  |  | 4.2 |  |  | 4.2 |  |  | 15.9 |  |  | 32.2 |
Other | 2.9 |  |  | 3.7 |  |  | 1.8 |  |  | 6.8 |  |  | 15.2 |
| $ | 93.1 |  |  | $ | 158.2 |  |  | $ | 173.0 |  |  | $ | 632.2 |  |  | $ | 1,056.6 |

_______________________________________
(a) These borrowings are further explained in Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K. The table assumes our long-term debt is held to maturity.
(b) Amounts represent estimated interest payments on the 2030 Notes and ABL Term Loan as of December 31, 2020, assuming these instruments are held to maturity. Unused commitment fees and letter of credit fees payable under the Revolving Credit Facility are excluded from the table above. In addition, we have excluded our interest rate swaps from interest in the table above. For information regarding average pay rates and average receive rates on our interest rate swaps, see "Financial Instruments" included in this "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
(c) We enter into operating and finance leases in the normal course of business. We lease a portion of our distribution centers as well as other property and equipment under operating and finance leases. Some lease agreements provide us with the option to renew the lease or purchase the leased property. The lease term includes any renewal option periods we are reasonably certain of exercising. Our operating and finance lease obligations could change based on whether we actually exercise these renewal options and/or if we entered into additional lease agreements. Amounts exclude the minimum lease commitment for leases signed but not yet commenced as of December 31, 2020 of $7.3 million. For more information, see Note 11, Leases, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(d) Amounts represent contracts to purchase approximately $214 million of logs, approximately $35 million of which will be purchased pursuant to fixed-price contracts and approximately $179 million of which will be purchased pursuant to variable-price contracts. The $179 million is estimated using current contractual index pricing, but actual prices depend on future market prices. Under certain log agreements, we have the right to cancel or reduce our commitments in the event of a mill curtailment or shutdown. Future purchase prices under most of the variable-price agreements will be set quarterly or semiannually based on regional market prices. Our log requirements and our access to supply, as well as the cost of obtaining logs, are subject to change based on, among other things, the effect of governmental laws and regulations, our manufacturing operations not operating in the normal course of business, log availability, and the status of environmental appeals. Except for deposits required pursuant to log supply contracts, these obligations are not recorded in our consolidated financial statements until contract payment terms take effect.
(e) Long-term deferred income tax liabilities and unrecognized tax benefits are excluded from this table, because the timing of future cash outflows related to these items are uncertain. For more information, see Note 4, Income Taxes, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(f) Amounts consist of our non-qualified pension and deferred compensation liabilities, including the current portion of those obligations of $6.3 million.
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Off-Balance Sheet Arrangements
At December 31, 2020 and 2019, we had no material off-balance sheet arrangements with unconsolidated entities.
Guarantees
Note 10, Debt, and Note 18, Commitments, Legal Proceedings and Contingencies, and Guarantees, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K describe the nature of our guarantees, including the approximate terms of the guarantees, how the guarantees arose, the events or circumstances that would require us to perform under the guarantees, and the maximum potential undiscounted amounts of future payments we could be required to make.
Seasonal Influences
We are exposed to fluctuations in quarterly sales volumes and expenses due to seasonal factors. These seasonal factors are common in the building products industry. Seasonal changes in levels of building activity affect our building products businesses, which are dependent on housing starts, repair-and-remodeling activities, and light commercial construction activities. We typically report lower sales volumes in the first and fourth quarters due to the impact of poor weather on the construction market, and we generally have higher sales volumes in the second and third quarters, reflecting an increase in construction due to more favorable weather conditions. We typically have higher working capital in the first and second quarters in preparation and response to the building season. Seasonally cold weather increases costs, especially energy consumption costs, at most of our manufacturing facilities.
Disclosures of Financial Market Risks
In the normal course of business, we are exposed to financial risks such as changes in commodity prices, interest rates, and foreign currency exchange rates. In 2020, 2019, and 2018, we did not use derivative instruments to manage these risks, except for interest rate swaps as discussed below.
Commodity Price Risk
Many of the products we manufacture or purchase and resell and some of our key production inputs are commodities whose price is determined by the market's supply and demand for such products. Price fluctuations in our selling prices and key costs have a significant effect on our financial performance. The markets for most of these commodities are cyclical and are primarily affected by various economic and industry factors, including the strength of the U.S. housing market, net import and export activity, changes in or disruptions to industry production capacity, changes in inventory levels, and other factors beyond our control. For further discussion of commodity price risk, refer to "Item 1A. Risk Factors" of this Form 10-K and "Factors That Affect Our Operating Results and Trends" in this Management's Discussion and Analysis of Financial Condition and Results of Operations.
Interest Rate Risk
We are exposed to interest rate risk arising from fluctuations in variable-rate LIBOR on our term loan and when we have loan amounts outstanding on our Revolving Credit Facility. At December 31, 2020, we had $50.0 million of variable-rate debt outstanding based on one-month LIBOR after the pay-off of our $45.0 million term loan in July 2020, described in Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K. During the year ended December 31, 2020, we liquidated our interest rate swap agreements with notional principal amounts of $45.0 million in conjunction with the pay-off of the $45.0 million term loan. Our objective is to limit the variability of interest payments on our debt. To meet this objective, we enter into receive-variable, pay-fixed interest rate swaps to change the variable-rate cash flow exposure to fixed-rate cash flows. In accordance with our risk management strategy, we actively monitor our interest rate exposure and use derivative instruments from time to time to manage the related risk. We do not speculate using derivative instruments.
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At December 31, 2020, we had two interest rate swap agreements. Under the interest rate swaps, we receive one-month LIBOR-based variable interest rate payments and make fixed interest rate payments, thereby fixing the interest rate on $50.0 million of variable rate debt exposure. Payments on one interest rate swap, entered into in 2016, with a notional principal amount of $50.0 million is due on a monthly basis at an annual fixed rate of 1.007% and expires in February 2022 (Initial Swap). During second quarter 2020, we entered into another forward interest rate swap agreement which commences on the expiration date of the Initial Swap. Payments on this interest rate swap with a notional principal amount of $50.0 million will be due on a monthly basis at an annual fixed rate of 0.39% and expires in June 2025.
The interest rate swap agreements were not designated as cash flow hedges, and as a result, all changes in the fair value are recognized in "Change in fair value of interest rate swaps" in our Consolidated Statements of Operations rather than through other comprehensive income. At December 31, 2020, we recorded a long-term liability of $0.6 million in "Other long-term liabilities" on our Consolidated Balance Sheets, representing the fair value of the interest rate swap agreements. At December 31, 2019, we recorded a long-term asset of $0.8 million in "Other assets" on our Consolidated Balance Sheets, representing the fair value of the interest rate swap agreements.
Foreign Currency Risk
We have sales in countries outside the U.S. As a result, we are exposed to movements in foreign currency exchange rates, primarily in Canada, but we do not believe our exposure to currency fluctuations is significant.
Financial Instruments
The table below provides information as of December 31, 2020, about our financial instruments that are sensitive to changes in interest rates. The table presents principal cash flows and related weighted average interest rates by expected maturity dates. For obligations with variable interest rate sensitivity, the table sets forth payout amounts based on December 31, 2020 rates and does not attempt to project future rates.

|  |  |  |  |  |  |  |  |  |  |  |  | December 31, 2020
2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | There- after |  | Total |  | Fair Value (b)
| (millions, other than percentages)
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate debt payments (a) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 400.0 |  |  | $ | 400.0 |  |  | $ | 432.0 |
Average interest rates | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4.875 | % |  | 4.875 | % |  | — |
Variable-rate debt payments (a) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 50.0 |  |  | $ | — |  |  | $ | 50.0 |  |  | $ | 50.0 |
Average interest rates | — |  |  | — |  |  | — |  |  | — |  |  | 0.9 | % |  | — |  |  | 0.9 | % |  | — |

_______________________________________
(a) These obligations are further explained in Note 10, Debt, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K. The table assumes our long-term debt is held to maturity.
(b) We estimated the fair value using quoted market prices of our debt in inactive markets.
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The table below provides information as of December 31, 2020, about our interest rate swaps. For information on interest rate swaps, see Interest Rate Risk and Interest Rate Swaps of Note 16, Financial Instrument Risk, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K. The following is information about the notional amount and interest rate by contractual maturity date for our interest rate swap agreements, as well as the fair value of the asset at December 31, 2020:

|  |  |  |  |  |  |  |  |  |  |  |  | December 31, 2020
2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | There- after |  | Total |  | Fair Value
| (millions, other than percentages)
Interest rate swaps |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable to fixed notional amount (a) | $ | — |  |  | $ | 50.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 50.0 |  |  | $ | — |  |  | $ | 50.0 |  |  | $ | (0.6) |
Average pay rate (b) | — |  |  | 1.0 | % |  | — |  |  | — |  |  | 0.4 | % |  | — |  |  | 0.7 | % |  | — |
Average receive rate (c) | — |  |  | 0.2 | % |  | — |  |  | — |  |  | 0.2 | % |  | — |  |  | 0.2 | % |  | — |

_______________________________________
(a) We have one interest rate swap with a notional principal amount of $50.0 million that expires in February 2022 (Initial Swap). Another forward interest rate swap agreement commences on the expiration date of the Initial Swap and expires in June 2025.
(b) Represents the weighted average actual fixed interest rate payable on our interest rate swaps.
(c) Represents the weighted average variable interest rate receivable on our interest rate swaps at December 31, 2020.
Environmental
We are subject to a wide range of general and industry-specific environmental laws and regulations. In particular, we are affected by laws and regulations covering air emissions, wastewater discharges, solid and hazardous waste management, and site remediation. Compliance with these laws and regulations is a significant factor in the operation of our businesses. We believe that we have created a corporate culture of strong compliance by taking a conservative approach to environmental issues in order to assure that we are operating within the bounds of regulatory requirements. However, we cannot guarantee that we will be in compliance with environmental requirements at all times, and we cannot guarantee that we will not incur fines and penalties in the future. In 2020, we paid an insignificant amount in environmental fines and penalties.
We incur capital and operating expenditures to comply with federal, state, and local environmental laws and regulations. Failure to comply with these laws and regulations could result in civil or criminal fines or penalties or in enforcement actions. Our failure to comply could also result in governmental or judicial orders that stop or interrupt our operations or require us to take corrective measures, install additional pollution control equipment, or take other remedial actions. During 2020 and 2019, we spent approximately $1 million and $2 million, respectively, on capital expenditures to comply with environmental requirements. We expect to spend approximately $2 million in 2021 for this purpose.
As an owner and operator of real estate, we may be liable under environmental laws for the cleanup of past and present spills and releases of hazardous or toxic substances on or from our properties and operations. We may also be contractually obligated to indemnify third parties under environmental laws for the cleanup of past spills and releases of hazardous or toxic substances for properties which we no longer own and operate. We could be found liable under these laws whether or not we knew of, or were responsible for, the presence of such substances. In some cases, this liability may exceed the value of the property itself.
In connection with prior transactions, certain third parties are generally obligated to indemnify us for hazardous substance releases and other environmental violations that occurred prior to such transactions. However, these third parties may not have sufficient funds to fully satisfy their indemnification obligations when required, and in some cases, we may not be contractually entitled to indemnification by them.
Climate Change
In recent years, various legislative and regulatory proposals to restrict emissions of greenhouse gases (GHG), such as CO2, have been under consideration in state legislative bodies and the Environmental Protection Agency (EPA). These proposals have included regulations to reduce GHG emissions from new and existing electric utilities, which may result in increased electricity and natural gas costs to our businesses. There are currently no specific regulations that require our wood
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products plants to reduce GHG emissions, and the current EPA administration has not announced plans to develop such federal regulations.
States are taking various positions on climate change regulation. For example, Oregon and Washington are considering legislation and/or regulations to reduce GHG emissions that may impact our operations by increasing natural gas, transportation fuel, and/or electricity costs. Our manufacturing operations in these states derive a significant amount of their energy from biomass, although neither state currently plans to regulate biogenic CO2 emissions. We are not aware of any plans to regulate GHG emissions by other states in which we have manufacturing operations. However, there are on going efforts by various other organizations to encourage and/or require companies to calculate, report, and reduce their carbon footprint. Furthermore, our customers may impose carbon footprint standards on their vendors, which may require us to incur additional costs associated with the evaluation and reduction of GHGs. Given the high degree of uncertainty about the ultimate parameters of any GHG regulatory initiatives, it is premature to make any prediction concerning such impacts.
Other Regulatory Initiatives
From time to time, legislative bodies and environmental regulatory agencies may promulgate new regulatory programs imposing significant incremental operating costs or capital costs on us. In 2016, our facilities began complying with the final Boiler Maximum Achievable Control Technology (MACT) regulations, which regulate emissions of hazardous air pollutants from industrial boilers and process heaters. Following litigation of the standards, in 2020 the EPA proposed more stringent MACT emission standards for several types of boilers, including boilers common to our facilities. The EPA has not finalized those standards and therefore, remain subject to change. We expect our facilities will meet the proposed limits, although certain of our boilers may yet require additional improvements to ensure compliance. We continue to monitor and evaluate the EPA’s revisions to the Boiler MACT emission limits.
Some of our wood products facilities are subject to the Plywood and Composite Wood Products (PCWP) MACT standards for hazardous air pollutants, and they have complied with these standards since 2007 or 2008. In 2020, the EPA completed the Risk and Technology Review (RTR) for PCWP MACT standards. The EPA published the PCWP MACT RTR Rule on August 13, 2020, which concluded additional controls were not required for PCWP sources. However, the RTR Rule did not address certain remanded sources, including plywood presses, lumber kilns, and various other emission sources at wood products manufacturing mills. Furthermore, soon after publication of the RTR Rule, an environmental organization filed a petition for reconsideration which the EPA has granted. The EPA expects to begin working on the reconsideration and the remanded sources in 2021, but it may take the EPA two to three years to complete a final rule. It is expected that manufacturing facilities subject to the PCWP MACT standards would have three years after rule promulgation to comply with the revised rule. At this time we are unable to predict the impact to our business due to the potential revisions to this rule.
The Oregon Department of Environmental Quality (ODEQ) Cleaner Air Oregon (CAO) rules regulate toxic air emissions from manufacturing facilities located in Oregon. The rules are risk-based, and in March 2019, the ODEQ released their prioritization list establishing which facilities within the state likely pose the greatest risk to their communities based on emissions inventories that facilities submitted to the ODEQ. The ODEQ established four risk groups. None of our mills were identified in the first tier risk group, although our Medford plywood mill was identified in the second tier group. The second group is expected to be selected into the program in 2021 or 2022. Our other mills were identified in the third and fourth tier groups and will likely be selected several years from now. When selected into the program, the facilities may incur expenses to evaluate the risk to the public and may be required to incur additional operating or capital expenditures to mitigate any significant risk. We are developing a strategy for our Medford plywood mill but cannot predict the impact on that operation at this time. Furthermore, the ODEQ is currently considering revisions to the CAO rules and released draft rules on January 20, 2021. Although we are still evaluating effect of the draft rules on our business, we may be required to incur additional costs and/or accelerate the timing of compliance by our facilities.
The Regional Haze Rule, promulgated by the EPA, sets standards for visual air clarity in "Federal Class I" areas such as national parks and wilderness areas. In 2020, the ODEQ required our Medford and Elgin plywood mills to submit a cost/benefit analysis of emission controls that would reduce pollution at the mills associated with regional haze. In January 2021 both facilities received a preliminary determination from the ODEQ that additional controls would “likely” be required for the facilities’ boilers. We are currently evaluating the preliminary determination from the ODEQ and assessing the need for additional emission controls.
Other
At our Elgin plywood facility, our ongoing ability to use waste and storm water has been modified by the ODEQ. The new constraints create uncertainty around the future operations at the site. In late 2020, we reduced our purchases of logs for the
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Elgin operation considering the uncertainty created by the change in environmental constraints. As a result, we expect to operate with rolling curtailments in the first half of 2021, as we manage environmental permits, log supply availability, operating costs, and other factors influencing operations.
Critical Accounting Estimates
The preparation of financial statements in accordance with generally accepted accounting principles in the United States of America requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Actual results could differ from these estimates. We believe that the accounting estimates discussed below represent the accounting estimates requiring the exercise of judgment where a different set of judgments could result in the greatest changes to reported results. We reviewed the development, selection, and disclosure of our critical accounting estimates with the Audit Committee of our board of directors. Our current critical accounting estimates are as follows:
EWP Rebates and Allowances
We provide EWP rebates at various stages of the supply chain (including distributors, retail lumberyards, and homebuilders) as a means to increase sales. EWP rebates are based on the volume of purchases (measured in dollars or units), among other factors such as customer loyalty, conversion, and commitment incentives, as well as temporary protection from price increases. EWP rebate estimates are based on the expected amount to be paid and are recorded as a decrease in "Sales" as revenue is recognized. The estimate of EWP rebates is inherently difficult due to the time lag of information and it is challenging to estimate sales subject to rebate as the products transition beyond our wholesale customers and through the supply chain to homebuilders. In addition, some EWP rebate accruals are estimated based on achievement of tiered sales levels, which require management to forecast sales throughout the supply chain, using incentive terms that vary at each level. Information that we consider when estimating sales activity at retail lumberyards and homebuilders includes historical sales information, sales projections, publicly available information of housing starts by homebuilder, residential development audits, and economic forecasts of new residential construction, among other economic data. We update these forecasts on a regular basis. We adjust our estimate of revenue at the earlier of the time when the probability of EWP rebates paid changes or the time when the amounts of rebates become fixed. Because of the complexity of some of these rebates, the ultimate resolution may result in payments that are materially different from our current estimate of EWP rebates payable. At December 31, 2020 and 2019, we had $40.7 million and $37.3 million, respectively, of EWP rebates payable recorded in "Accrued liabilities, Other" on our Consolidated Balance Sheets.
Long-Lived Asset Impairment
We review the carrying value of long-lived assets for impairment when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable (triggering event). No triggering event was identified during the year ended December 31, 2020. An impairment of a long-lived asset exists when the carrying value is not recoverable through future undiscounted cash flows from operations and when the carrying value of an asset or asset group exceeds its fair value.
To the extent a triggering event is identified, we would be required to estimate the fair value of an asset or asset group, and long-lived asset impairment would become a critical accounting estimate. We estimate the fair value of an asset or asset group based on quoted market prices for similar assets (the amount for which the asset(s) could be bought or sold in a current transaction with a third party) when available (Level 2 measurement) or the expected proceeds from the sale of the assets (Level 3 measurement). When quoted market prices are not available, we use a discounted cash flow model to estimate fair value (Level 3 measurement). To measure future cash flows, we are required to make assumptions about future sales volumes, future product pricing, and future expenses to be incurred. Estimates of future cash flows may change based on overall economic conditions, the cost and availability of wood fiber, environmental requirements, capital spending, and other strategic management decisions.
Future events or circumstances such as sustained negative economic impact of the COVID-19 pandemic, declines in single-family housing starts, environmental regulations or restrictions, sustained periods of weak commodity prices, loss of key customers, capacity additions by competitors, changes in the competitive position of our products, or changes in raw materials or manufacturing costs that lead us to believe the long-lived asset will no longer provide a sufficient return on investment, could prompt decisions to invest capital differently than expected, sell facilities, or to curtail operations. Any of these factors, among others, could result in non-cash impairment or accelerated depreciation charges in the future with respect to long-lived assets, which could have a material impact on our results of operations in the period in which an impairment is recognized. Due to the numerous variables associated with our judgments and assumptions relating to the valuation of assets and the effects of changes
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on these valuations, the timing, precision, and reliability of our estimates are subject to uncertainty. As additional information becomes known, we may change our estimates.
New and Recently Adopted Accounting Standards
For information related to new and recently adopted accounting standards, see "New and Recently Adopted Accounting Standards" in Note 2, Summary of Significant Accounting Policies, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" in this Form 10-K.
ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Information concerning quantitative and qualitative disclosures about market risk is included under the captions "Disclosures of Financial Market Risks" and "Financial Instruments" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K.
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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
Boise Cascade Company
Consolidated Statements of Operations

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands, except per-share data)
Sales |  | $ | 5,474,838 |  |  | $ | 4,643,404 |  |  | $ | 4,995,290 |
Costs and expenses |  |  |  |  |  |
Materials, labor, and other operating expenses (excluding depreciation) |  | 4,536,051 |  |  | 3,965,776 |  |  | 4,307,594 |
Depreciation and amortization |  | 95,169 |  |  | 80,141 |  |  | 146,837 |
Selling and distribution expenses |  | 428,279 |  |  | 390,739 |  |  | 363,138 |
General and administrative expenses |  | 78,636 |  |  | 71,072 |  |  | 68,811 |
Loss on sale and curtailment of facilities |  | 1,707 |  |  | — |  |  | 38,314 |
Other (income) expense, net |  | (33) |  |  | (783) |  |  | (1,442) |
|  | 5,139,809 |  |  | 4,506,945 |  |  | 4,923,252 |
Income from operations |  | 335,029 |  |  | 136,459 |  |  | 72,038 |
Foreign currency exchange gain (loss) |  | 357 |  |  | 449 |  |  | (944) |
Pension expense (excluding service costs) |  | (7,457) |  |  | (2,474) |  |  | (24,999) |
Interest expense |  | (26,223) |  |  | (26,051) |  |  | (26,193) |
Interest income |  | 999 |  |  | 2,811 |  |  | 1,649 |
Change in fair value of interest rate swaps |  | (2,426) |  |  | (2,963) |  |  | 551 |
Loss on extinguishment of debt |  | (13,968) |  |  | — |  |  | — |
|  | (48,718) |  |  | (28,228) |  |  | (49,936) |
Income before income taxes |  | 286,311 |  |  | 108,231 |  |  | 22,102 |
Income tax provision |  | (111,332) |  |  | (27,306) |  |  | (1,625) |
Net income |  | $ | 174,979 |  |  | $ | 80,925 |  |  | $ | 20,477 |
Weighted average common shares outstanding: |  |  |  |  |  |
Basic |  | 39,277 |  |  | 39,039 |  |  | 38,932 |
Diluted |  | 39,431 |  |  | 39,242 |  |  | 39,387 |
Net income per common share: |  |  |  |  |  |
Basic |  | $ | 4.45 |  |  | $ | 2.07 |  |  | $ | 0.53 |
Diluted |  | $ | 4.44 |  |  | $ | 2.06 |  |  | $ | 0.52 |
Dividends declared per common share |  | $ | 2.00 |  |  | $ | 1.37 |  |  | $ | 1.30 |

See accompanying notes to consolidated financial statements.
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Boise Cascade Company
Consolidated Statements of Comprehensive Income

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
Net income | $ | 174,979 |  |  | $ | 80,925 |  |  | $ | 20,477 |
Other comprehensive income (loss), net of tax |  |  |  |  |
Defined benefit pension plans |  |  |  |  |
Actuarial gain (loss), net of tax of $1,728, $(1,176), and $3,598, respectively | 5,104 |  |  | (3,466) |  |  | 10,580 |
Amortization of actuarial (gain) loss, net of tax of $204, $(44), and $380, respectively | 603 |  |  | (131) |  |  | 1,117 |
Effects of settlements, net of tax of $1,581, $341, and $5,902, respectively | 4,669 |  |  | 1,001 |  |  | 17,353 |
Stranded tax effects of pension plan termination | 38,794 |  |  | — |  |  | — |
Other comprehensive income (loss), net of tax | 49,170 |  |  | (2,596) |  |  | 29,050 |
Comprehensive income | $ | 224,149 |  |  | $ | 78,329 |  |  | $ | 49,527 |

See accompanying notes to consolidated financial statements.
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Boise Cascade Company
Consolidated Balance Sheets

|  | December 31
|  | 2020 |  | 2019
|  | (thousands)
ASSETS |  |  |  |
Current |  |  |  |
Cash and cash equivalents |  | $ | 405,382 |  |  | $ | 285,237 |
Receivables |  |  |  |
Trade, less allowances of $1,111 and $591 |  | 375,865 |  |  | 215,894 |
Related parties |  | 201 |  |  | 568 |
Other |  | 15,067 |  |  | 15,184 |
Inventories |  | 503,480 |  |  | 497,596 |
Prepaid expenses and other |  | 8,860 |  |  | 8,285 |
Total current assets |  | 1,308,855 |  |  | 1,022,764 |
Property and equipment, net |  | 461,456 |  |  | 476,949 |
Operating lease right-of-use assets |  | 62,447 |  |  | 64,228 |
Finance lease right-of-use assets |  | 29,523 |  |  | 21,798 |
Timber deposits |  | 11,761 |  |  | 12,287 |
Goodwill |  | 60,382 |  |  | 60,382 |
Intangible assets, net |  | 16,574 |  |  | 17,797 |
Deferred income taxes |  | 7,460 |  |  | 7,952 |
Other assets |  | 7,260 |  |  | 9,194 |
Total assets |  | $ | 1,965,718 |  |  | $ | 1,693,351 |

See accompanying notes to consolidated financial statements.
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Boise Cascade Company
Consolidated Balance Sheets (continued)

|  | December 31
|  | 2020 |  | 2019
|  | (thousands, except per-share data)
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Current |  |  |  |
Accounts payable |  |  |  |
Trade |  | $ | 307,653 |  |  | $ | 222,930 |
Related parties |  | 1,199 |  |  | 1,624 |
Accrued liabilities |  |  |  |
Compensation and benefits |  | 118,400 |  |  | 83,943 |
Income taxes payable |  | 8,101 |  |  | — |
Interest payable |  | 8,477 |  |  | 6,723 |
Other |  | 80,172 |  |  | 69,772 |
Total current liabilities |  | 524,002 |  |  | 384,992 |
Debt |  |  |  |
Long-term debt |  | 443,792 |  |  | 440,544 |
Other |  |  |  |
Compensation and benefits |  | 25,951 |  |  | 45,586 |
Operating lease liabilities, net of current portion |  | 56,001 |  |  | 58,029 |
Finance lease liabilities, net of current portion |  | 31,607 |  |  | 23,419 |
Deferred income taxes |  | 18,263 |  |  | 26,694 |
Other long-term liabilities |  | 15,303 |  |  | 12,757 |
|  | 147,125 |  |  | 166,485 |
Commitments and contingent liabilities |  |  |  |
Stockholders' equity |  |  |  |
Preferred stock, $0.01 par value per share; 50,000 shares authorized, no shares issued and outstanding |  | — |  |  | — |
Common stock, $0.01 par value per share; 300,000 shares authorized, 44,568 and 44,353 shares issued, respectively |  | 446 |  |  | 444 |
Treasury stock, 5,367 shares at cost |  | (138,909) |  |  | (138,909) |
Additional paid-in capital |  | 538,006 |  |  | 533,345 |
Accumulated other comprehensive loss |  | (1,078) |  |  | (50,248) |
Retained earnings |  | 452,334 |  |  | 356,698 |
Total stockholders' equity |  | 850,799 |  |  | 701,330 |
Total liabilities and stockholders' equity |  | $ | 1,965,718 |  |  | $ | 1,693,351 |

See accompanying notes to consolidated financial statements.
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Boise Cascade Company
Consolidated Statements of Cash Flows

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Cash provided by (used for) operations |  |  |  |  |  |
Net income |  | $ | 174,979 |  |  | $ | 80,925 |  |  | $ | 20,477 |
Items in net income not using (providing) cash |  |  |  |  |  |
Depreciation and amortization, including deferred financing costs and other |  | 97,131 |  |  | 82,377 |  |  | 148,937 |
Stock-based compensation |  | 7,820 |  |  | 7,973 |  |  | 8,831 |
Pension expense |  | 8,125 |  |  | 3,121 |  |  | 25,793 |
Deferred income taxes |  | 27,497 |  |  | 9,025 |  |  | (7,965) |
Change in fair value of interest rate swaps |  | 2,426 |  |  | 2,963 |  |  | (551) |
Loss on sale and curtailment of facilities (excluding severance) |  | 1,476 |  |  | — |  |  | 37,331 |
Other |  | 169 |  |  | (353) |  |  | (1,688) |
Loss on extinguishment of debt |  | 13,968 |  |  | — |  |  | — |
Decrease (increase) in working capital, net of acquisitions |  |  |  |  |  |
Receivables |  | (159,906) |  |  | 2,160 |  |  | 37,561 |
Inventories |  | (6,249) |  |  | 40,176 |  |  | (64,190) |
Prepaid expenses and other |  | (1,133) |  |  | (132) |  |  | (500) |
Accounts payable and accrued liabilities |  | 131,541 |  |  | 5,212 |  |  | (14,531) |
Pension contributions |  | (12,759) |  |  | (5,238) |  |  | (26,081) |
Income taxes payable |  | 9,022 |  |  | 19,387 |  |  | (4,186) |
Other |  | 409 |  |  | (1,949) |  |  | 4,373 |
Net cash provided by operations |  | 294,516 |  |  | 245,647 |  |  | 163,611 |
Cash provided by (used for) investment |  |  |  |  |  |
Expenditures for property and equipment |  | (79,429) |  |  | (82,720) |  |  | (79,987) |
Acquisitions of businesses and facilities |  | — |  |  | (15,676) |  |  | (25,482) |
Proceeds from sale of facilities |  | — |  |  | 2,493 |  |  | 15,003 |
Proceeds from sales of assets and other |  | 713 |  |  | 1,838 |  |  | 1,209 |
Net cash used for investment |  | (78,716) |  |  | (94,065) |  |  | (89,257) |
Cash provided by (used for) financing |  |  |  |  |  |
Borrowings of long-term debt, including revolving credit facility |  | 400,000 |  |  | 5,500 |  |  | 7,500 |
Payments of long-term debt, including revolving credit facility |  | (405,774) |  |  | (5,500) |  |  | (7,500) |
Dividends paid on common stock |  | (79,195) |  |  | (53,954) |  |  | (50,615) |
Tax withholding payments on stock-based awards |  | (3,309) |  |  | (3,574) |  |  | (5,135) |
Payments of deferred financing costs |  | (6,222) |  |  | — |  |  | — |
Treasury stock purchased |  | — |  |  | — |  |  | (4,930) |
Other |  | (1,155) |  |  | (488) |  |  | 857 |
Net cash used for financing |  | (95,655) |  |  | (58,016) |  |  | (59,823) |
Net increase in cash and cash equivalents |  | 120,145 |  |  | 93,566 |  |  | 14,531 |
Balance at beginning of the period |  | 285,237 |  |  | 191,671 |  |  | 177,140 |
Balance at end of the period |  | $ | 405,382 |  |  | $ | 285,237 |  |  | $ | 191,671 |

See accompanying notes to consolidated financial statements.
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Boise Cascade Company
Consolidated Statements of Stockholders' Equity

| Common Stock |  | Treasury Stock |  | Additional Paid-In Capital |  | Accumulated Other Comprehensive Loss |  | Retained Earnings |  | Total
| Shares |  | Amount |  | Shares |  | Amount |  |  |  |
| (thousands)
Balance at December 31, 2017 | 43,748 |  |  | $ | 437 |  |  | 5,167 |  |  | $ | (133,979) |  |  | $ | 523,550 |  |  | $ | (76,702) |  |  | $ | 361,243 |  |  | $ | 674,549 |
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 20,477 |  |  | 20,477 |
Other comprehensive income |  |  |  |  |  |  |  |  |  |  | 29,050 |  |  |  |  | 29,050 |
Common stock issued | 328 |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  | 4 |
Treasury stock purchased |  |  |  |  | 200 |  |  | (4,930) |  |  |  |  |  |  |  |  | (4,930) |
Stock-based compensation |  |  |  |  |  |  |  |  | 8,831 |  |  |  |  |  |  | 8,831 |
Common stock dividends ($1.30 per share) |  |  |  |  |  |  |  |  |  |  |  |  | (51,664) |  |  | (51,664) |
Tax withholding payments on stock-based awards |  |  |  |  |  |  |  |  | (5,135) |  |  |  |  |  |  | (5,135) |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 1,412 |  |  |  |  |  |  | 1,412 |
Other |  |  |  |  |  |  |  |  | (4) |  |  |  |  | — |  |  | (4) |
Balance at December 31, 2018 | 44,076 |  |  | $ | 441 |  |  | 5,367 |  |  | $ | (138,909) |  |  | $ | 528,654 |  |  | $ | (47,652) |  |  | $ | 330,056 |  |  | $ | 672,590 |
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 80,925 |  |  | 80,925 |
Other comprehensive loss |  |  |  |  |  |  |  |  |  |  | (2,596) |  |  |  |  | (2,596) |
Common stock issued | 277 |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Stock-based compensation |  |  |  |  |  |  |  |  | 7,973 |  |  |  |  |  |  | 7,973 |
Common stock dividends ($1.37 per share) |  |  |  |  |  |  |  |  |  |  |  |  | (54,283) |  |  | (54,283) |
Tax withholding payments on stock-based awards |  |  |  |  |  |  |  |  | (3,574) |  |  |  |  |  |  | (3,574) |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 295 |  |  |  |  |  |  | 295 |
Other |  |  |  |  |  |  |  |  | (3) |  |  |  |  |  |  | (3) |
Balance at December 31, 2019 | 44,353 |  |  | $ | 444 |  |  | 5,367 |  |  | $ | (138,909) |  |  | $ | 533,345 |  |  | $ | (50,248) |  |  | $ | 356,698 |  |  | $ | 701,330 |
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 174,979 |  |  | 174,979 |
Other comprehensive income |  |  |  |  |  |  |  |  |  |  | 49,170 |  |  |  |  | 49,170 |
Common stock issued | 215 |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Stock-based compensation |  |  |  |  |  |  |  |  | 7,820 |  |  |  |  |  |  | 7,820 |
Common stock dividends ($2.00 per share) |  |  |  |  |  |  |  |  |  |  |  |  | (79,343) |  |  | (79,343) |
Tax withholding payments on stock-based awards |  |  |  |  |  |  |  |  | (3,309) |  |  |  |  |  |  | (3,309) |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 152 |  |  |  |  |  |  | 152 |
Other |  |  |  |  |  |  |  |  | (2) |  |  |  |  |  |  | (2) |
Balance at December 31, 2020 | 44,568 |  |  | $ | 446 |  |  | 5,367 |  |  | $ | (138,909) |  |  | $ | 538,006 |  |  | $ | (1,078) |  |  | $ | 452,334 |  |  | $ | 850,799 |

See accompanying notes to consolidated financial statements.
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Notes to Consolidated Financial Statements
1. Nature of Operations and Basis of Presentation
Boise Cascade Company is a building products company headquartered in Boise, Idaho. Our operations began on October 29, 2004 (inception), when we acquired the forest products assets of OfficeMax, Incorporated. As used in these consolidated financial statements, the terms "Boise Cascade," "we," and "our" refer to Boise Cascade Company and its consolidated subsidiaries. We are one of the largest producers of engineered wood products (EWP) and plywood in North America and a leading United States (U.S.) wholesale distributor of building products.
We operate our business using two reportable segments: (1) Wood Products, which primarily manufactures EWP and plywood, and (2) Building Materials Distribution (BMD), which is a wholesale distributor of building materials. For more information, see Note 17, Segment Information.
2. Summary of Significant Accounting Policies
Principles of Consolidation
The consolidated financial statements include the accounts of Boise Cascade and its subsidiaries. Intercompany balances and transactions have been eliminated.
Use of Estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of accounts receivable, inventories, goodwill, intangible assets, and other long-lived assets; legal contingencies; guarantee obligations; indemnifications; assumptions used in retirement, medical, and workers' compensation benefits; assumptions used in the determination of right-of-use assets and related lease liabilities; stock-based compensation; fair value measurements; income taxes; and vendor and customer rebates, among others. These estimates and assumptions are based on management's best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.
Revenue Recognition
Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. For additional information regarding our revenue recognition policies, see Note 3, Revenues.
Cash and Cash Equivalents
Cash equivalents consist of short-term investments that have a maturity of three months or less at the date of purchase. At December 31, 2020 and 2019, the majority of our cash and cash equivalents were invested in money market funds that are broadly diversified and invested in high-quality, short-duration securities, including commercial paper, certificates of deposit, U.S. government agency securities, and similar instruments. We have significant amounts of cash and cash equivalents that are in excess of federally insured limits. Though we have not experienced any losses on our cash and cash equivalents to date and we do not anticipate incurring any losses, we cannot be assured that we will not experience losses on our cash and cash equivalents.
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Trade Accounts Receivables and Allowance for Doubtful Accounts
Trade accounts receivable are stated at the amount we expect to collect. Trade accounts receivable do not bear interest. We make ongoing estimates relating to the collectability of our accounts receivable and maintain a reserve for estimated losses resulting from the inability of our customers to meet their financial obligations to us. At December 31, 2020 and 2019, we had $1.1 million and $0.6 million, respectively, recorded as allowances for doubtful accounts. In determining the amount of the reserve and in order to manage credit risk, we consider our historical level of credit losses, customer concentrations, and current economic trends and monitor the creditworthiness of significant customers based on ongoing credit evaluations. Our sales are principally to customers in the building products industry located in the U.S. and Canada. A significant portion of our sales are concentrated with a relatively small number of customers. In 2020, our top ten customers represented approximately 42% of sales, with one customer accounting for approximately 11% of total sales. At December 31, 2020, receivables from two customers accounted for approximately 13% and 12% of total receivables. At December 31, 2019, receivables from these two customers accounted for approximately 14% and 12% of total receivables. No other customer accounted for 10% or more of total receivables. Adjustments to the valuation allowance are charged to income. Trade accounts receivable balances that remain outstanding after we have used reasonable collection efforts are written off through a charge to the valuation allowance and a credit to accounts receivable. Although we have not experienced material credit losses in recent years, our actual future losses from uncollectable accounts may differ materially from our current estimates. As additional information becomes known, we may change our estimates. In the event we determine that a change in the reserve is appropriate, we will record a charge to "Selling and distribution expenses" in our Consolidated Statements of Operations in the period we make such a determination.
Fair Value
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy under GAAP gives the highest priority to quoted market prices (Level 1) and the lowest priority to unobservable inputs (Level 3). In general, and where applicable, we use quoted prices in active markets for identical assets or liabilities to determine fair value (Level 1). If quoted prices in active markets for identical assets or liabilities are not available to determine fair value, we use quoted prices for similar assets and liabilities or inputs that are observable either directly or indirectly (Level 2). If quoted prices for identical or similar assets are not available or are unobservable, we may use internally developed valuation models, whose inputs include bid prices, and third-party valuations utilizing underlying asset assumptions (Level 3). See Note 12, Retirement and Benefit Plans, for the fair value measurements of our defined benefit plans' assets.
Financial Instruments
Our financial instruments are cash and cash equivalents, accounts receivable, accounts payable, long-term debt, and interest rate swaps. Our cash is recorded at cost, which approximates fair value, and our cash equivalents are money market funds. As of December 31, 2020 and 2019, we held $371.8 million and $259.5 million, respectively, in money market funds that are measured at fair value on a recurring basis using Level 1 inputs. The recorded values of accounts receivable and accounts payable approximate fair values based on their short-term nature. At December 31, 2020 and 2019, the book value of our fixed-rate debt was $400.0 million and $350.0 million, respectively, and the fair value was estimated to be $432.0 million and $364.7 million, respectively. The difference between the book value and the fair value is derived from the difference between the period-end market interest rate and the stated rate of our fixed-rate, long-term debt. We estimated the fair value of our fixed-rate debt using quoted market prices of our debt in inactive markets (Level 2 inputs). The interest rate on our variable-rate debt is based on market conditions such as the London Interbank Offered Rate (LIBOR) or a base rate. Because the interest rate on the variable-rate debt is based on current market conditions, we believe that the estimated fair value of the outstanding balance on our variable-rate debt approximates book value.
We are exposed to financial risks such as changes in commodity prices, interest rates, and foreign currency exchange rates. We employ a variety of practices to manage these risks, including operating and financing activities and, where deemed appropriate, the use of derivative instruments. As discussed in Note 16, Financial Instrument Risk, we use interest rate swaps to mitigate our variable interest rate exposure, the fair value of which is measured based on Level 2 inputs.
Vendor Rebates and Allowances
We receive rebates and allowances from our vendors under a number of different programs, including vendor marketing programs. At December 31, 2020 and 2019, we had $9.9 million and $9.2 million, respectively, of vendor rebates and allowances recorded in "Receivables, Other" on the Consolidated Balance Sheets. Rebates and allowances received from our vendors are recognized as a reduction of "Materials, labor, and other operating expenses (excluding depreciation)" when the product is sold, unless the rebates and allowances are linked to a specific incremental cost to sell a vendor's product. Amounts
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received from vendors that are linked to specific selling and distribution expenses are recognized as a reduction of "Selling and distribution expenses" in the period the expense is incurred.
Foreign Currency
The functional currency for our operations outside the United States is the U.S. dollar. Nonmonetary assets and liabilities and related depreciation and amortization for these foreign operations are remeasured into U.S. dollars using historical exchange rates. Monetary assets and liabilities are remeasured into U.S. dollars using the exchange rates as of the Consolidated Balance Sheet date. Revenue and expense items are remeasured into U.S. dollars using an average exchange rate prevailing during the year.
Leases
We primarily lease land, building, and equipment under operating and finance leases. We determine if an arrangement is a lease at inception and assess lease classification as either operating or finance at lease inception or upon modification. Substantially all of our leases with initial terms greater than one year are for real estate, including distribution centers, corporate headquarters, land, and other office space. Substantially all of these lease agreements have fixed payment terms based on the passage of time and are recorded in our Building Materials Distribution segment. Many of our leases include fixed escalation clauses, renewal options and/or termination options that are factored into our determination of lease term and lease payments when appropriate. Renewal options generally range from one to ten years with fixed payment terms similar to those in the original lease agreements. Some lease agreements provide us with the option to purchase the leased property at market value. Our lease agreements do not contain any residual value guarantees.
Right-of-use (ROU) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of fixed lease payments over the lease term. The current portion of our operating and finance lease liabilities are recorded in "Accrued liabilities, Other" on our Consolidated Balance Sheets.
We use our estimated incremental borrowing rate, which is derived from information available at the lease commencement date, in determining the present value of lease payments. In determining our incremental borrowing rates, we give consideration to publicly available interest rates for instruments with similar characteristics, including credit rating, term, and collateralization.
For purposes of determining straight-line rent expense, the lease term is calculated from the date we first take possession of the facility, including any periods of free rent and any renewal option periods we are reasonably certain of exercising. Variable lease expense generally includes reimbursement of actual costs for common area maintenance, property taxes, and insurance on leased real estate and are recorded as incurred. Most of our operating lease expense was recorded in "Selling and distribution expenses" in our Consolidated Statements of Operations. In addition, we do not separate lease and non-lease components for all of our leases.
Our short-term leases primarily include equipment rentals with lease terms on a month-to-month basis, which provide for our seasonal needs and flexibility in the use of equipment. Our short-term leases also include certain real estate for which either party has the right to cancel upon providing notice of 30 to 90 days. We do not recognize ROU assets or lease liabilities for short-term leases.
Income Taxes
We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and respective tax bases and operating loss and tax credit carryforwards, as measured using enacted tax rates expected to be in effect in the periods where temporary differences are expected to be realized or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be unable to realize our deferred tax assets in the future, we would make an adjustment to the deferred tax asset valuation allowance, which would increase the provision for income taxes.
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We review and update our tax positions as necessary to add any new uncertain tax positions taken, or to remove previously identified uncertain positions that have been adequately resolved. Additionally, uncertain positions may be remeasured as warranted by changes in facts or law. Accounting for uncertain tax positions requires estimating the amount, timing and likelihood of ultimate settlement. Although we believe that these estimates are reasonable, actual results could differ from these estimates.
Inventory Valuation
Inventories are valued at the lower of cost or net realizable value. Cost is based on the first-in, first-out (FIFO) method of inventory valuation or average cost. Wholesale distribution inventories include costs incurred in bringing inventory to its existing location. Manufactured inventories include costs for materials, labor, and factory overhead. Log inventories include costs to harvest and deliver the logs.
Inventories included the following (work in process is not material):

|  | December 31, 2020 |  | December 31, 2019
|  | (thousands)
Finished goods and work in process |  | $ | 431,663 |  |  | $ | 413,020 |
Logs |  | 35,622 |  |  | 45,574 |
Other raw materials and supplies |  | 36,195 |  |  | 39,002 |
|  | $ | 503,480 |  |  | $ | 497,596 |

Property and Equipment
Property and equipment are recorded at cost. Cost includes expenditures for major improvements and replacements and the amount of interest cost associated with significant capital additions. For the years ended December 31, 2020, 2019, and 2018, an insignificant amount of interest was capitalized. We expense all repair and maintenance costs as incurred. When property and equipment are retired, sold, or otherwise disposed of, the asset's carrying amount and related accumulated depreciation are removed from the accounts and any gain or loss is included in income (loss). We use the straight-line method of depreciation.
Property and equipment consisted of the following asset classes with the following general range of estimated useful lives:

|  | December 31, 2020 |  | December 31, 2019 |  | General Range of Estimated Useful Lives in Years
|  | (thousands) |  |  |  |
Land |  | $ | 47,099 |  |  | $ | 39,304 |  |  |  |  |
Buildings |  | 151,718 |  |  | 140,008 |  |  | 20 | - | 40
Improvements |  | 64,178 |  |  | 61,187 |  |  | 10 | - | 15
Mobile equipment, information technology, and office furniture |  | 178,271 |  |  | 165,445 |  |  | 3 | - | 7
Machinery and equipment |  | 687,768 |  |  | 666,467 |  |  | 7 | - | 12
Construction in progress |  | 40,606 |  |  | 34,846 |  |  |  |  |
|  | 1,169,640 |  |  | 1,107,257 |  |  |  |  |
Less accumulated depreciation |  | (708,184) |  |  | (630,308) |  |  |  |  |
|  | $ | 461,456 |  |  | $ | 476,949 |  |  |  |  |

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Long-Lived Asset Impairment
We review long-lived assets for impairment when events or changes in circumstances indicate that the carrying amount of assets may not be recoverable (triggering event). An impairment of long-lived assets exists when the carrying value is not recoverable through future undiscounted cash flows from operations and when the carrying value of an asset or asset group exceeds its fair value. No triggering event was identified during the years ended December 31, 2020 and 2019. For a description of the impairment losses recorded during the year ended December 31, 2018, see Note 7, Sale of Manufacturing Facilities.
Goodwill and Intangible Assets Impairment
We maintain two reporting units for purposes of our goodwill impairment testing, Wood Products and Building Materials Distribution, which are the same as our operating segments discussed in Note 17, Segment Information. We test goodwill in each of our reporting units and intangible assets with indefinite lives for impairment annually in the fourth quarter or sooner if events or changes in circumstances indicate that the carrying value of the asset may exceed fair value. We also evaluate the remaining useful lives of our finite-lived purchased intangible assets to determine whether any adjustments to the useful lives are necessary.
We completed our annual assessment of goodwill in fourth quarter 2020 using a qualitative approach. The qualitative goodwill impairment assessment requires evaluating factors, based on the weight of evidence, to determine whether a reporting unit's carrying value would more likely than not exceed its fair value. As part of our goodwill qualitative testing process for each reporting unit, we evaluate various factors that are specific to the reporting unit as well as industry and macroeconomic factors in order to determine whether they are reasonably likely to have a material impact on the fair value of our reporting units. Based on the qualitative analysis performed in 2020, we concluded that there were no changes that were reasonably likely to cause the fair value of the reporting units to be less than the reporting units' carrying value and determined that there was no impairment of our goodwill. In the event we were to determine that a reporting unit's carrying value would more likely than not exceed its fair value, quantitative testing would be performed comparing carrying values to estimated fair values. See Note 9, Goodwill and Intangible Assets, for additional information.
Asset Retirement Obligations
We recognize our asset retirement obligations in the period in which they are incurred if sufficient information is available to reasonably estimate the fair value of the obligation. Fair value estimates are determined using Level 3 inputs in the fair value hierarchy. The fair values of our asset retirement obligations are measured using expected future cash outflows discounted using the company's credit-adjusted risk-free interest rate. When we record the liability, we capitalize the cost by increasing the carrying amount of the related long-lived asset. Over time, the liability is accreted to its settlement value, and the capitalized cost is depreciated over the useful life of the related asset. Upon settlement of the liability, we will recognize a gain or loss for any difference between the settlement amount and the liability recorded.
At December 31, 2020 and 2019, we had $2.3 million and $2.2 million, respectively, of asset retirement obligations recorded in "Other long-term liabilities" on our Consolidated Balance Sheets. These liabilities related primarily to landfill closure costs. The liabilities are based on the best estimate of current costs and are updated periodically to reflect current technology, laws and regulations, inflation, and other economic factors. We do not have any assets legally restricted for purposes of settling asset retirement obligations.
We have additional asset retirement obligations with indeterminate settlement dates. The fair value of these asset retirement obligations cannot be estimated due to the lack of sufficient information to estimate the settlement dates of the obligations. These asset retirement obligations include, for example, (i) removal and disposal of potentially hazardous materials on equipment and/or an operating facility if the equipment and/or facility were to undergo major maintenance, renovation, or demolition; (ii) retention ponds that may be required to be drained and/or cleaned if the related operating facility is closed; and (iii) storage sites or owned facilities for which removal and/or disposal of chemicals and other related materials are required if the operating facility is closed. We will recognize a liability in the period in which sufficient information becomes available to reasonably estimate the fair value of these obligations.
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Pension Benefits
Several estimates and assumptions are required to record pension costs and liabilities, including discount rates, expected return on plan assets, expected rate of compensation increases, retirement and mortality rates, expected contributions, and other factors. We review and update these assumptions annually unless a plan curtailment or other event occurs requiring that we update the estimates on an interim basis. See Note 12, Retirement and Benefit Plans, for additional information related to our pension plan.
Deferred Software Costs
We defer internal-use software costs that benefit future years. These costs are amortized using the straight-line method over the expected life of the software, typically three to five years. "Other assets" in the Consolidated Balance Sheets includes $4.1 million and $4.6 million, respectively, of deferred software costs at December 31, 2020 and 2019. During the year ended December 31, 2020, we amortized $1.9 million of deferred software costs. We amortized $2.0 million of deferred software costs for both of the years ended December 31, 2019 and 2018.
Labor Concentration and Unions
As of December 31, 2020, we had approximately 5,970 employees. Approximately 22% of these employees work pursuant to collective bargaining agreements. As of December 31, 2020, we had ten collective bargaining agreements. Two agreements covering approximately 740 employees at our Oakdale and Florien plywood plants are set to expire on July 15, 2021. If any of these agreements are not renewed or extended upon their termination, we could experience a material labor disruption, strike, or significantly increased labor costs at one or more of our facilities, either in the course of negotiations of a labor agreement or otherwise. Labor disruptions or shortages could prevent us from meeting customer demands or result in increased costs, thereby reducing our sales and profitability.
Self-Insurance
We are self-insured for certain losses related to workers' compensation and medical claims, general and auto liability, as well as property and business interruption losses. The expected ultimate costs for claims incurred are recognized as liabilities in the Consolidated Balance Sheets and are estimated based principally on an analysis of historical claims data and estimates of claims incurred but not reported. Losses are accrued and charged to operations when it is probable that a loss has been incurred and the amount can be reasonably estimated. We maintain third-party stop-loss insurance policies to cover these liability costs in excess of predetermined retained amounts. Costs related to the administration of the plans and related claims are expensed as incurred. At December 31, 2020 and 2019, self-insurance related liabilities of $9.5 million and $9.9 million, respectively, were classified within "Accrued liabilities," and $10.0 million and $10.0 million, respectively, were classified within "Other long-term liabilities" on our Consolidated Balance Sheets.
New and Recently Adopted Accounting Standards
In March 2020, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Our current contracts that reference LIBOR include certain debt instruments and interest rate swaps. The amendments are effective for eligible contract modifications subsequent to March 12, 2020, and through December 31, 2022. The adoption of this standard did not have a material effect on our financial statements, but we will assess any eligible contract modifications in the future.
In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which is intended to reduce complexity in accounting for income taxes. This ASU removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2020, with early adoption permitted. We adopted this standard in first quarter of 2021 and it did not have a material effect on our financial statements.
In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Topic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans. This ASU amends ASC 715 to remove disclosures that are no longer considered cost beneficial, clarifies the specific requirements of
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disclosures, and adds disclosure requirements identified as relevant related to defined benefit pension and other postretirement plans. The ASU's changes related to disclosures are part of the FASB's disclosure framework project. The updated guidance is effective retrospectively for annual reporting periods ending after December 15, 2020, with early adoption permitted. We adopted this standard in fourth quarter of 2020 and it did not have a material effect on our financial statement disclosures.
There were no other accounting standards recently issued that had or are expected to have a material impact on our consolidated financial statements and associated disclosures.
3. Revenues
Wood Products Segment
Our Wood Products segment manufactures EWP, consisting of laminated veneer lumber (LVL), I-joists, and laminated beams, which are structural products used in applications where extra strength and consistent quality are required, such as headers and beams. LVL is also used in the manufacture of I-joists, which are assembled by combining a vertical web of oriented strand board (OSB) with top and bottom LVL or solid wood flanges. In addition, we manufacture structural, appearance, and industrial plywood panels, and ponderosa pine lumber. Our wood products are used primarily in new residential construction, residential repair-and-remodeling markets, and light commercial construction. The majority of our wood products are sold to leading wholesalers (including our Building Materials Distribution segment), home improvement centers, retail lumberyards, and industrial converters.
For EWP, plywood and veneer, byproducts, and other products, we transfer control and recognize a sale when we ship the product from our manufacturing facility to our customer. Control transfers when product is shipped because the customer has legal title, a present obligation to pay, and risk and rewards of ownership. The amount of consideration we receive and revenue we recognize varies with changes in rebates and cash discounts we offer to our customers. See "Rebates and Cash Discounts" below.
Building Materials Distribution Segment
Our Building Materials Distribution segment is a leading national stocking wholesale distributor of building materials. We distribute a broad line of building materials, including OSB, plywood, and lumber (collectively referred to as commodities); general line items such as siding, composite decking, doors, metal products, insulation, and roofing; and EWP. Except for EWP, we purchase most of these building materials from third-party suppliers and market them primarily to retail lumberyards, home improvement centers, and specialty distributors that then sell the products to the final end customers, who are typically homebuilders, independent contractors, and homeowners engaged in residential construction projects. Substantially all of Building Materials Distribution's EWP is sourced from our Wood Products segment.
We sell products using two primary distribution methods: warehouse sales and direct sales. Warehouse sales are distributed from our warehouses to our customers. Direct sales are shipped from the manufacturer to the customer without us taking physical possession of inventory. We report direct sales on a gross basis, that is, the amounts billed to our customers are recorded as "Sales," and inventory purchased from manufacturers are recorded as "Materials, labor, and other operating expenses (excluding depreciation)." We are the principal of direct sales because we control the inventory, as we have the ability to direct its use before it is transferred to our customers.
For warehouse sales, we transfer control and recognize a sale when the customer takes physical possession of the product. Control transfers when the customer takes physical possession of the product because the customer has legal title, a present obligation to pay, and risk and rewards of ownership. For direct sales, we transfer control and recognize a sale when the product is shipped from the manufacturer to the customer. Control transfers when product is shipped because the customer has legal title, a present obligation to pay, and risk and rewards of ownership. The amount of consideration we receive and revenue we recognize varies with changes in customer rebates and cash discounts we offer to our customers. See "Rebates and Cash Discounts" below.
Rebates an d Cash Discounts
Rebates are provided to our customers and our customers' customers based on the volume of their purchases, among other factors such as customer loyalty, conversion, and commitment. We provide the rebates to increase the sell-through of our products. Rebates are generally estimated based on the expected amount to be paid and recorded as a decrease in "Sales." At December 31, 2020 and 2019, we had $56.3 million and $49.4 million, respectively, of rebates payable to our customers
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recorded in "Accrued liabilities, Other" on our Consolidated Balance Sheets. We also estimate expected cash discounts on trade accounts receivable based on an analysis of historical experience and record cash discounts as a decrease in "Sales." We adjust our estimate of revenue at the earlier of when the probability of rebates paid and cash discounts provided ch anges or when the amounts become fixed. There have not been significant changes to our estimates of rebates, although it is reasonably possible that a change in the estimate may occur.
Shipping and Handling
Fees for shipping and handling charged to customers for sales transactions are included in "Sales" in our Consolidated Statements of Operations. When control over products has transferred to the customer, we have elected to recognize costs related to shipping and handling as fulfillment costs. For our Wood Products segment, costs related to shipping and handling are included in "Materials, labor, and other operating expenses (excluding depreciation)" in our Consolidated Statements of Operations. In our Wood Products segment, we view our shipping and handling costs as a cost of the manufacturing process and the movement of product to our end customers. For our Building Materials Distribution segment, costs related to shipping and handling of $177.1 million, $169.2 million, and $156.5 million for the years ended December 31, 2020, 2019, and 2018, respectively, are included in "Selling and distribution expenses" in our Consolidated Statements of Operations. In our Building Materials Distribution segment, our activities relate to the purchase and resale of finished product, and excluding shipping and handling costs from “Materials, labor, and other operating expenses (excluding depreciation)” provides us a clearer view of our operating performance and the effectiveness of our sales and purchasing functions.
Other
Our payment terms vary by the type of customer and the products offered. The term between invoicing and when payment is due is not significant.
Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.
We expense sales commissions when incurred as they are earned. These costs are recorded within "Selling and distribution expenses."
For revenue disaggregated by major product line for each reportable segment, see Note 17, Segment Information.
4. Income Taxes
Income Tax Provision
Income before income taxes includes the following components:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Domestic |  | $ | 284,147 |  |  | $ | 105,341 |  |  | $ | 21,704 |
Foreign |  | 2,164 |  |  | 2,890 |  |  | 398 |
Income before income taxes |  | $ | 286,311 |  |  | $ | 108,231 |  |  | $ | 22,102 |

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The income tax provision shown in the Consolidated Statements of Operations includes the following:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Current income tax provision |  |  |  |  |  |
Federal |  | $ | 66,401 |  |  | $ | 13,700 |  |  | $ | 6,459 |
State |  | 17,434 |  |  | 4,574 |  |  | 3,126 |
Foreign |  | — |  |  | 7 |  |  | 5 |
Total current |  | 83,835 |  |  | 18,281 |  |  | 9,590 |
Deferred income tax provision (benefit) |  |  |  |  |  |
Federal |  | 22,321 |  |  | 7,430 |  |  | (5,987) |
State |  | 4,529 |  |  | 925 |  |  | (2,127) |
Foreign |  | 647 |  |  | 670 |  |  | 149 |
Total deferred |  | 27,497 |  |  | 9,025 |  |  | (7,965) |
Income tax provision |  | $ | 111,332 |  |  | $ | 27,306 |  |  | $ | 1,625 |

The effective tax rate varies from the U.S. Federal statutory income tax rate principally due to the following:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands, except percentages)
Income before income taxes |  | $ | 286,311 |  |  | $ | 108,231 |  |  | $ | 22,102 |
Statutory U.S. income tax rate |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Statutory tax provision |  | $ | 60,125 |  |  | $ | 22,728 |  |  | $ | 4,642 |
State taxes |  | 12,267 |  |  | 4,390 |  |  | 741 |
Stranded tax effects of Plan Termination (a) |  | 38,794 |  |  | — |  |  | — |
Unrecognized tax benefits |  | 87 |  |  | (178) |  |  | (181) |
Benefit from enactment of the Tax Act (b) |  | — |  |  | — |  |  | (3,806) |
Tax credits |  | (712) |  |  | (725) |  |  | (272) |
Foreign rate differential |  | 65 |  |  | 71 |  |  | 432 |
Share-based compensation |  | (411) |  |  | (532) |  |  | (1,718) |
Nondeductible executive compensation |  | 808 |  |  | 852 |  |  | 366 |
Meals and entertainment |  | 340 |  |  | 738 |  |  | 886 |
Other |  | (31) |  |  | (38) |  |  | 535 |
Total |  | $ | 111,332 |  |  | $ | 27,306 |  |  | $ | 1,625 |
Effective income tax rate |  | 38.9 | % |  | 25.2 | % |  | 7.4 | %

______________________________________
(a) In December 2020, we eliminated our qualified defined benefit pension plan (Plan Termination), as discussed in Note 12, Retirement and Benefit Plans. Prior to the Plan Termination, "Accumulated other comprehensive loss" on our Consolidated Balance Sheet included the stranded tax effects of our conversion from a limited liability company to a corporation in 2013 and the adoption of the Tax Cuts and Jobs Act (the "Tax Act") in 2017. Upon Plan Termination, these stranded tax effects of $38.8 million were required to be released into income tax expense under GAAP.
(b) As of December 31, 2018, we completed our assessment of the effects of the Tax Act on our financial statements. In connection with our analysis of the Tax Act, we recorded a discrete tax benefit of $3.8 million during the year ended December 31, 2018. The $3.8 million reduction in income tax expense resulted from the remeasurement of deferred income taxes to the new federal statutory
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rate of 21%, which mostly related to a $20.0 million discretionary pension contribution made during 2018, for which we received a tax deduction at the 2017 federal income tax rate of 35%.
During the year ended December 31, 2020, cash paid for taxes, net of refunds received, was $75.1 million. During the year ended December 31, 2019, income tax refunds received, net of cash taxes paid, was $1.4 million. During the year ended December 31, 2018, cash paid for taxes, net of refunds received, was $14.5 million.
Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts for income tax purposes. The components of our net deferred tax assets and liabilities at December 31, 2020 and 2019, are summarized as follows:

|  | December 31, 2020 |  | December 31, 2019
|  | (thousands)
Deferred tax assets |  |  |  |
Employee benefits |  | $ | 29,258 |  |  | $ | 26,914 |
Lease liabilities |  | 25,057 |  |  | 23,241 |
Inventories |  | 3,711 |  |  | 3,358 |
Foreign net operating loss carryforward |  | 1,279 |  |  | 1,514 |
Other |  | 6,921 |  |  | 6,256 |
Deferred tax assets |  | $ | 66,226 |  |  | $ | 61,283 |
Deferred tax liabilities |  |  |  |
Property and equipment |  | $ | (45,652) |  |  | $ | (50,751) |
Right-of-use assets |  | (23,256) |  |  | (21,753) |
Intangible assets and other |  | (6,823) |  |  | (5,924) |
Other |  | (1,298) |  |  | (1,597) |
Deferred tax liabilities |  | $ | (77,029) |  |  | $ | (80,025) |
Total deferred tax liabilities, net |  | $ | (10,803) |  |  | $ | (18,742) |

As of December 31, 2020, we have foreign net operating loss carryforwards of $9.9 million, which if unused, will expire in years 2032 through 2036. We have state income tax credits totaling $1.3 million as of December 31, 2020, which if unused will expire in years 2021 through 2032. The foreign net operating loss and state credit carryforwards in the income tax returns filed included unrecognized tax benefits. The deferred tax assets recognized for those net operating loss and state credit carryforwards are presented net of these unrecognized tax benefits.
Income Tax Uncertainties
The following table summarizes the changes related to our gross unrecognized tax benefits excluding interest and penalties:

|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Balance as of January 1 |  | $ | 1,685 |  |  | $ | 1,850 |  |  | $ | 2,083 |
Increases related to prior years' tax positions |  | 97 |  |  | — |  |  | 13 |
Increases related to current years' tax positions |  | 89 |  |  | 53 |  |  | — |
Decreases related to prior years' tax positions |  | — |  |  | — |  |  | (43) |
Lapse of statute of limitations |  | (91) |  |  | (218) |  |  | (203) |
Balance as of December 31 |  | $ | 1,780 |  |  | $ | 1,685 |  |  | $ | 1,850 |

As of December 31, 2020, 2019, and 2018, we had $1.8 million, $1.7 million, and $1.9 million, respectively, of unrecognized tax benefits recorded on our Consolidated Balance Sheets, excluding interest and penalties. Of the total
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unrecognized tax benefits recorded, $1.8 million, $1.7 million, and $1.8 million (net of the federal benefit for state taxes), respectively, would impact the effective tax rate if recognized.
We recognize interest and penalties related to uncertain tax positions as income tax expense in our Consolidated Statements of Operations. For the years ended December 31, 2020, 2019, and 2018, we recognized an insignificant amount of interest and penalties related to taxes. We recognize tax liabilities and adjust these liabilities when our judgment changes as a result of the evaluation of new information not previously available or as new uncertainties occur. We do not expect the unrecognized tax benefits to change significantly over the next twelve months.
We file income tax returns in the U.S. and various state and foreign jurisdictions. Tax years 2017 to present remain open to examination in the U.S. and tax years 2016 to present remain open to examination in Canada and various states. We recorded net operating losses in Canada beginning in 2006 that are subject to examinations and adjustments up to four years following the year in which they are utilized.
5. Net Income Per Common Share
Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Weighted average common shares outstanding for the basic net income per common share calculation includes certain vested restricted stock units (RSUs) and performance stock units (PSUs) as there are no conditions under which those shares will not be issued. For more information about common share activity during the period, see Note 14, Stockholders' Equity. Diluted net income per common share is computed by dividing net income by the combination of the weighted average number of common shares outstanding during the period and other potentially dilutive weighted average common shares. Other potentially dilutive weighted average common shares include the dilutive effect of stock options, RSUs, and PSUs for each period using the treasury stock method. Under the treasury stock method, the exercise price of a share and the amount of compensation expense, if any, for future service that has not yet been recognized are assumed to be used to repurchase shares in the current period.
The following table sets forth the computation of basic and diluted net income per common share:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands, except per-share data)
Net income | $ | 174,979 |  |  | $ | 80,925 |  |  | $ | 20,477 |
Weighted average common shares outstanding during the period (for basic calculation) | 39,277 |  |  | 39,039 |  |  | 38,932 |
Dilutive effect of other potential common shares | 154 |  |  | 203 |  |  | 455 |
Weighted average common shares and potential common shares (for diluted calculation) | 39,431 |  |  | 39,242 |  |  | 39,387 |
Net income per common share - Basic | $ | 4.45 |  |  | $ | 2.07 |  |  | $ | 0.53 |
Net income per common share - Diluted | $ | 4.44 |  |  | $ | 2.06 |  |  | $ | 0.52 |

The computation of the dilutive effect of other potential common shares excludes stock awards representing no shares of common stock in the year ended December 31, 2020, and 0.1 million shares of common stock in both the years ended December 31, 2019 and 2018. Under the treasury stock method, the inclusion of these stock awards would have been antidilutive.
6. Curtailment of Manufacturing Facilities
On February 20, 2020, we decided to permanently curtail I-joist production at our Roxboro, North Carolina facility by March 31, 2020. As a result of the curtailment, we recorded $15.0 million of accelerated depreciation during first quarter 2020 to fully depreciate the curtailed I-joist assets. In addition, we recorded $1.7 million of various closure-related costs in "Loss on sale and curtailment of facilities" in our Consolidated Statements of Operations.
On November 2, 2018, we decided to permanently curtail LVL production at our Roxboro, North Carolina facility by December 31, 2018. As a result of the curtailment, we recorded $55.0 million of accelerated depreciation during fourth quarter 2018 to fully depreciate the curtailed LVL production assets. In addition, we recorded $2.6 million of construction in progress
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and spare parts write-offs, as well as $0.2 million of severance-related expenses, recorded in "Loss on sale and curtailment of facilities" in our Consolidated Statements of Operations.
7. Sale of Manufacturing Facilities
In December 2018, we committed to sell a hardwood plywood facility located in Moncure, North Carolina, and subsequently entered into a definitive sale agreement in January 2019 (the Moncure Sale). This facility generated net sales and operating loss of approximately $5.5 million and $1.4 million, respectively, during the year ended December 31, 2019, and net sales and operating loss of approximately $32.7 million and $7.0 million, respectively, during the year ended December 31, 2018. These results are included in the operating results of our Wood Products segment.
On March 1, 2019, we closed on the Moncure Sale and received proceeds of $2.5 million. The disposal group met the criteria to be classified as held for sale in December 2018. Upon classification as held for sale, we discontinued depreciation of the long-lived assets, and performed an assessment of impairment to identify and expense any excess of carrying value over fair value less costs to sell. As a result, we recorded pre-tax impairment and sale-related losses of $24.0 million during the year ended December 31, 2018, recorded in "Loss on sale and curtailment of facilities" in our Consolidated Statements of Operations.
On September 10, 2018, we entered into an agreement to sell two lumber mills and a particleboard plant located in Northeast Oregon (the Sale). These facilities generated net sales and operating loss of approximately $74.1 million and $0.2 million, respectively, for the year ended December 31, 2018. These results are included in the operating results of our Wood Products segment.
On November 2, 2018, we closed on the Sale and received proceeds of $15.0 million. As a result, we recorded a pre-tax loss of $11.5 million during the year ended December 31, 2018, recorded in "Loss on sale and curtailment of facilities" in our Consolidated Statements of Operations.
8. Acquisitions
During the year ended December 31, 2019, our wholly owned subsidiary, Boise Cascade Building Materials Distribution, L.L.C., completed the acquisition of a wholesale building material distribution location in Birmingham, Alabama (the Acquisition). The purchase price of the Acquisition was $15.7 million, including a post-closing adjustment of less than $0.1 million based upon a working capital target.
During the year ended December 31, 2018, our wholly owned subsidiary, Boise Cascade Building Materials Distribution, L.L.C., completed the acquisition of wholesale building material distribution locations in Nashville, Tennessee, Medford, Oregon, and Cincinnati, Ohio (collectively, the 2018 Acquisitions). The purchase price of the 2018 Acquisitions was $25.5 million.
9. Goodwill and Intangible Assets
Goodwill represents the excess of the purchase price and related costs over the fair value of the net tangible and intangible assets of businesses acquired.
The carrying amount of our goodwill by segment is as follows:

|  | Building Materials Distribution |  | Wood Products |  | Total
|  | (thousands)
Balance at December 31, 2020 and 2019 |  | $ | 11,792 |  |  | $ | 48,590 |  |  | $ | 60,382 |

At December 31, 2020 and 2019, intangible assets represented the values assigned to trade names and trademarks and customer relationships. The trade names and trademarks have indefinite lives and are not amortized. The weighted-average useful life for customer relationships from the date of purchase is approximately 10 years. Amortization expense is expected to be approximately $1.2 million per year for the next five years.
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Intangible assets consisted of the following:

|  | December 31, 2020
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
|  | (thousands)
Trade names and trademarks |  | $ | 8,900 |  |  | $ | — |  |  | $ | 8,900 |
Customer relationships |  | 12,450 |  |  | (4,776) |  |  | 7,674 |
|  | $ | 21,350 |  |  | $ | (4,776) |  |  | $ | 16,574 |

|  | December 31, 2019
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
|  | (thousands)
Trade names and trademarks |  | $ | 8,900 |  |  | $ | — |  |  | $ | 8,900 |
Customer relationships |  | 12,450 |  |  | (3,553) |  |  | 8,897 |
|  | $ | 21,350 |  |  | $ | (3,553) |  |  | $ | 17,797 |

10. Debt
Long-term debt consisted of the following:

|  | December 31, 2020 |  | December 31, 2019
|  | (thousands)
Asset-based revolving credit facility due 2025 |  | $ | — |  |  | $ | — |
Asset-based credit facility term loan due 2025 |  | 50,000 |  |  | 50,000 |
Term loan due 2026 |  | — |  |  | 45,000 |
4.875% senior notes due 2030 |  | 400,000 |  |  | — |
5.625% senior notes due 2024 |  | — |  |  | 350,000 |
Deferred financing costs |  | (6,208) |  |  | (4,456) |
Long-term debt |  | $ | 443,792 |  |  | $ | 440,544 |

At December 31, 2020, the maturities for the aggregate amount of long-term debt outstanding were as follows (in thousands):

2021 |  | $ | — |
2022 |  | — |
2023 |  | — |
2024 |  | — |
2025 |  | 50,000 |
Thereafter |  | 400,000 |

Asset-Based Credit Facility
On May 15, 2015, Boise Cascade and its principal operating subsidiaries, Boise Cascade Wood Products, L.L.C., and Boise Cascade Building Materials Distribution, L.L.C., as borrowers, and Boise Cascade Wood Products Holdings Corp., as guarantor, entered into an Amended and Restated Credit Agreement, as amended, (Amended Agreement) with Wells Fargo Capital Finance, LLC, as administrative agent, and the banks named therein as lenders. On March 13, 2020, we entered into the sixth amendment to the Amended Agreement to reduce the maximum amount available for revolving loans from $370 million to $350 million (Revolving Credit Facility) and to extend the maturity date of the Credit Agreement from May 1, 2022, to March 13, 2025. The term loan within the Amended Agreement remains at $50.0 million (ABL Term Loan). Interest on
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borrowings under our Revolving Credit Facility and ABL Term Loan are payable monthly. Borrowings under the Amended Agreement are constrained by a borrowing base formula dependent upon levels of eligible receivables and inventory reduced by outstanding borrowings and letters of credit (Availability).
The Amended Agreement is secured by a first-priority security interest in substantially all of our assets, except for property and equipment. The proceeds of borrowings under the agreement are available for working capital and other general corporate purposes.
The Amended Agreement contains customary nonfinancial covenants, including a negative pledge covenant and restrictions on new indebtedness, investments, distributions to equity holders, asset sales, and affiliate transactions, the scope of which are dependent on the Availability existing from time to time. The Amended Agreement also contains a requirement that we meet a 1:1 fixed-charge coverage ratio (FCCR), applicable only if Availability falls below 10% of the aggregate revolving lending commitments (or $35 million). Availability exceeded the minimum threshold amounts required for testing of the FCCR at all times since entering into the Amended Agreement, and Availability at December 31, 2020, was $345.2 million.
The Amended Agreement permits us to pay dividends only if at the time of payment (i) no default has occurred or is continuing (or would result from such payment) under the Amended Agreement, and (ii) pro forma Excess Availability (as defined in the Amended Agreement) is equal to or exceeds 25% of the aggregate Revolver Commitments (as defined in the Amended Agreement) or (iii) (x) pro forma Excess Availability is equal to or exceeds 15% of the aggregate Revolver Commitment and (y) our fixed-charge coverage ratio is greater than or equal to 1:1 on a pro forma basis.
Revolving Credit Facility
Interest rates under the Revolving Credit Facility are based, at our election, on either LIBOR or a base rate, as defined in the Amended Agreement, plus a spread over the index elected that ranges from 1.25% to 1.50% for loans based on LIBOR and from 0.25% to 0.50% for loans based on the base rate. The spread is determined on the basis of a pricing grid that results in a higher spread as average quarterly Availability declines. Letters of credit are subject to a fronting fee payable to the issuing bank and a fee payable to the lenders equal to the LIBOR margin rate. In addition, we are required to pay an unused commitment fee at a rate of 0.25% per annum of the average unused portion of the lending commitments.
At both December 31, 2020 and 2019, we had no borrowings outstanding under the Revolving Credit Facility and $4.8 million and $4.6 million, respectively, of letters of credit outstanding. These letters of credit and borrowings, if any, reduce Availability under the Revolving Credit Facility by an equivalent amount.
ABL Term Loan
The ABL Term Loan was provided by institutions within the Farm Credit system. Borrowings under the ABL Term Loan may be repaid from time to time at the discretion of the borrowers without premium or penalty. However, any principal amount of ABL Term Loan repaid may not be subsequently re-borrowed.
Interest rates under the ABL Term Loan are based, at our election, on either LIBOR or a base rate, as defined in the Amended Agreement, plus a spread over the index elected that ranges from 1.75% to 2.00% for LIBOR rate loans and from 0.75% to 1.00% for base rate loans, both dependent on the amount of Average Excess Availability (as defined in the Amended Agreement). During the year ended December 31, 2020, the average interest rate on the ABL Term Loan was approximately 2.33%.
We have received and expect to continue receiving patronage credits under the ABL Term Loan. Patronage credits are distributions of profits from banks in the Farm Credit system, which are cooperatives that are required to distribute profits to their members. Patronage distributions, which are generally made in cash, are received in the year after they are earned. Patronage credits are recorded as a reduction to interest expense in the year earned. After giving effect to expected patronage distributions, the effective average net interest rate on the ABL Term Loan was approximately 1.3% during the year ended December 31, 2020.
Term Loan
On March 30, 2016 (Closing Date), Boise Cascade and its principal operating subsidiaries, Boise Cascade Wood Products, L.L.C., and Boise Cascade Building Materials Distribution, L.L.C., as borrowers, and the guarantors party thereto, entered into a term loan agreement, as amended, (Term Loan Agreement) with American AgCredit, PCA, as administrative agent and sole lead arranger, and other banks in the Farm Credit system named therein as lenders. The original Term Loan
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Agreement was for a $75.0 million secured term loan (Term Loan). In December 2016, we repaid $30 million of the Term Loan. In July 2020, we paid off the remaining balance on the Term Loan of $45.0 million, thus satisfying and discharging our obligations under the Term Loan.
Interest rates under the Term Loan Agreement were based, at our election, on either the LIBOR or a base rate, as defined in the Term Loan Agreement, plus a spread over the index. The applicable spread for the Term Loan ranges from 1.875% to 2.125% for LIBOR rate loans, and 0.875% to 1.125% for base rate loans, both dependent on our Interest Coverage Ratio (as defined in the Term Loan Agreement). During the year ended December 31, 2020, the average interest rate on the Term Loan was approximately 2.82%. We have received and expect to receive patronage credits through the period in which the Term Loan was outstanding. After giving effect to expected patronage distributions, the effective average net interest rate on the Term Loan was approximately 1.8%.
2024 Notes
On August 29, 2016, Boise Cascade issued $350 million of 5.625% senior notes due September 1, 2024 (2024 Notes), through a private placement that was exempt from the registration requirements of the Securities Act of 1933, as amended (Securities Act). Interest on our 2024 Notes was payable semiannually in arrears on March 1 and September 1.
In connection with the issuance of the $400 million of 4.875% senior notes due July 1, 2030 (2030 Notes) described below, we commenced a tender offer to purchase any and all of our $350 million aggregate principal amount of 2024 Notes then outstanding. On July 27, 2020, we accepted for purchase an aggregate principal amount of $212.5 million of the 2024 Notes that were tendered. On September 1, 2020, we redeemed the remaining $137.5 million in aggregate principal amount of the 2024 Notes outstanding and our obligations under the indenture, pursuant to which the 2024 Notes were issued, were satisfied and discharged. In connection with these transactions, we recognized a pre-tax loss on the extinguishment of debt of $14.0 million during the year ended December 31, 2020. The loss includes $10.8 million of debt extinguishment premium payments and $3.2 million for the write-off of unamortized deferred financing costs.
2030 Notes
On July 27, 2020, we issued the 2030 Notes through a private placement that was exempt from the registration requirements of the Securities Act. The 2030 Notes mature on July 1, 2030, with interest payable semiannually in arrears on January 1 and July 1, commencing on January 1, 2021. The 2030 Notes are guaranteed by each of our existing and future direct or indirect domestic subsidiaries that is a guarantor under our Amended Agreement.
Following the sale of our 2030 Notes, as noted above, we used the net proceeds of the sale to repurchase or redeem any and all of our 2024 Notes, to pay off our Term Loan of $45.0 million, and to pay related financing fees and expenses related to the offering of the 2030 Notes and incurred in connection with the repurchase or redemption of the 2024 Notes.
The 2030 Notes are senior unsecured obligations and rank equally with all of the existing and future senior indebtedness of Boise Cascade Company and of the guarantors, senior to all of their existing and future subordinated indebtedness, effectively subordinated to all of their present and future senior secured indebtedness (including all borrowings with respect to our Amended Agreement to the extent of the value of the assets securing such indebtedness), and structurally subordinated to the indebtedness of any subsidiaries that do not guarantee the 2030 Notes.
The terms of the indenture governing the 2030 Notes, among other things, limit the ability of Boise Cascade and our restricted subsidiaries to: incur additional debt; declare or pay dividends; redeem stock or make other distributions to stockholders; make investments; create liens on assets; consolidate, merge or transfer substantially all of their assets; enter into transactions with affiliates; and sell or transfer certain assets. The indenture governing the 2030 Notes permits us to pay dividends only if at the time of payment (i) no default has occurred or is continuing (or would result from such payment) under the indenture, and (ii) our consolidated leverage ratio is no greater than 3.5:1, or (iii) the dividend, together with other dividends since the issue date, would not exceed our "builder" basket under the indenture. In addition, the indenture includes certain specific baskets for the payment of dividends.
The indenture governing the 2030 Notes provides for customary events of default and remedies.
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Interest Rate Swaps
For information on interest rate swaps, see Interest Rate Risk and Interest Rate Swaps of Note 16, Financial Instrument Risk.
Cash Paid for Interest
For the years ended December 31, 2020, 2019, and 2018, cash payments for interest were $22.2 million, $24.1 million, and $24.1 million, respectively.
11. Leases
Adoption of ASC Topic 842, "Leases"
On January 1, 2019, we adopted Topic 842 using the modified retrospective transition method and used the effective date as our date of initial application. Consequently, leases for reporting periods beginning after January 1, 2019 are presented under Topic 842, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 840.
Lease Costs
The components of lease expense were as follows:

| Year Ended December 31 |  |
| 2020 |  | 2019 |  |
| (thousands) |  |
Operating lease cost | $ | 13,339 |  |  | $ | 13,541 |  |  |
Finance lease cost |  |  |  |  |
Amortization of right-of-use assets | 2,210 |  |  | 1,616 |  |  |
Interest on lease liabilities | 2,271 |  |  | 1,899 |  |  |
Variable lease cost | 2,967 |  |  | 2,645 |  |  |
Short-term lease cost | 4,115 |  |  | 4,614 |  |  |
Sublease income | (140) |  |  | (540) |  |  |
Total lease cost | $ | 24,762 |  |  | $ | 23,775 |  |  |

Other Information
Supplemental cash flow information related to leases was as follows:

| Year Ended December 31
| 2020 |  | 2019
| (thousands)
Cash paid for amounts included in the measurement of lease liabilities |  |  |
Operating cash flows from operating leases | $ | 13,018 |  |  | $ | 13,508 |
Operating cash flows from finance leases | 2,271 |  |  | 1,862 |
Financing cash flows from finance leases | 1,307 |  |  | 783 |
Right-of-use assets obtained in exchange for lease obligations |  |  |
Operating leases | 8,310 |  |  | 4,211 |
Finance leases | 9,969 |  |  | 2,637 |

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Other information related to leases was as follows:

| December 31, 2020 |  | December 31, 2019 |  |  |  |
Weighted-average remaining lease term (years) |  |  |  |  |  |  |
Operating leases | 8 |  | 8 |  |  |  |
Finance leases | 15 |  | 14 |  |  |  |
Weighted-average discount rate |  |  |  |  |  |  |
Operating leases (a) | 6.4 | % |  | 6.5 | % |  |  |  |
Finance leases | 7.7 | % |  | 8.5 | % |  |  |  |

___________________________________
(a) Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019.
As of December 31, 2020, our minimum lease payment requirements for noncancelable operating and finance leases are as follows:

|  | Operating Leases |  | Finance Leases
|  | (thousands)
2021 |  | $ | 13,593 |  |  | $ | 3,924 |
2022 |  | 13,024 |  |  | 3,930 |
2023 |  | 12,073 |  |  | 3,970 |
2024 |  | 11,189 |  |  | 3,967 |
2025 |  | 9,448 |  |  | 3,607 |
Thereafter |  | 25,545 |  |  | 37,801 |
Total future minimum lease payments |  | 84,872 |  |  | 57,199 |
Less: interest |  | (18,945) |  |  | (24,035) |
Total lease obligations |  | 65,927 |  |  | 33,164 |
Less: current obligations |  | (9,926) |  |  | (1,557) |
Long-term lease obligations |  | $ | 56,001 |  |  | $ | 31,607 |

As of December 31, 2020, the minimum lease payment amount for leases signed but not yet commenced was $7.3 million.
Disclosures Related to Periods Prior to Adoption of ASC Topic 842, "Leases"
Rental expense for operating leases was $18.2 million for the year ended December 31, 2018, and sublease rental income was not material. During the year ended December 31, 2018, we recorded two capital leases for distribution centers with initial lease terms of 13 and 20 years, respectively, in the amount of $18.9 million, which represents non-cash investing and financing activities.
12. Retirement and Benefit Plans
Our retirement plans consist of noncontributory defined benefit pension plans, contributory defined contribution savings plans, a deferred compensation plan, and a multiemployer health and welfare plan.
Defined Benefit Plans
Some of our employees are covered by noncontributory defined benefit pension plans, including a qualified defined benefit pension plan (Pension Plan) which was eliminated in December 2020 (Plan Termination). Benefits under the Pension Plan have been frozen for salaried employees since 2009 and substantially all eligible hourly employees since 2012. The following summarizes recent activity of each individual plan:
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•In conjunction with the Plan Termination, we purchased a buy-in group annuity contract (Buy-In) from The Prudential Insurance Company of America (Prudential), which was funded with plan assets on August 6, 2020. In addition, we froze accrual of all remaining benefits of hourly employees on our Pension Plan effective August 31, 2020. In anticipation of the Plan Termination, the Buy-In funded lump-sum payments made to eligible plan participants at their election, on or about December 2, 2020, after which, neither the Pension Plan nor Prudential has any further obligations to those participants.
After completion of the lump-sum program, we exercised our option to convert the Buy-In to a buy-out group annuity contract (Buy-Out) for no additional premium. When the Buy-Out became effective on December 31, 2020, we irrevocably transferred to Prudential the future benefit obligations and annuity administration for all remaining plan participants (or their beneficiaries) in the Pension Plan. These transactions fully eliminated the liabilities of our Pension Plan, resulting in a non-cash settlement charge of $6.2 million in fourth quarter 2020.
•On September 30, 2019, we transferred $19.8 million of our Pension Plan assets to Prudential for the purchase of a group annuity contract. Under the arrangement, Prudential assumed ongoing responsibility for administration and benefit payments for approximately 10% of our U.S. qualified pension plan projected benefit obligations at the time of the transaction. As a result of the transaction, we recognized a non-cash settlement charge of $1.3 million in third quarter 2019.
•On April 25, 2018, and August 10, 2018, we transferred $151.8 million and $124.8 million, respectively, of our Pension Plan assets to Prudential for the purchase of group annuity contracts. Under the arrangements, Prudential assumed ongoing responsibility for administration and benefit payments for over 60% of our U.S. qualified pension plan projected benefit obligations. As a result of the transfers of pension plan assets, we recorded settlement expense in second and third quarters 2018 of $12.0 million and $11.3 million, respectively. See "Assumptions" below for the impact on our discount rate and expected return on plan asset assumptions.
We also have nonqualified salaried pension plans, which were frozen so that no future benefits have accrued since December 31, 2009.
Defined Contribution Plans
We sponsor contributory defined contribution savings plans for most of our salaried and hourly employees, and we generally provide company contributions to the savings plans. Since March 1, 2010, we have contributed 4% of each salaried participant's eligible compensation to the plan as a nondiscretionary company contribution. In addition, beginning in 2012, for the years that a performance target is met, we contribute an additional amount of the employee's eligible compensation, depending on company performance and the employee's years of service. During the years ended December 31, 2020, 2019, and 2018, company performance resulted in additional contributions in the range of 2% to 4%, 1.6% to 3.1%, and 2% to 4%, respectively, of eligible compensation. The company contributions for union and nonunion hourly employees vary by location. Company contributions paid, or to be paid, to our defined contribution savings plans for the years ended December 31, 2020, 2019, and 2018, were $23.4 million, $19.8 million, and $22.2 million, respectively.
Defined Contributory Trust
We participated in a multiemployer defined contributory trust plan for certain union hourly employees since 2013. As of December 31, 2020, 2019, and 2018 approximately 735, 1,215, and 1,221, respectively, of our employees participated in this plan. For certain of these employees, per the terms of the representative collective bargaining agreements, we were required to contribute $0.90, $0.90, and $0.85, respectively, per hour per active employee during 2020, 2019, and 2018. For certain other of these employees, we were required to contribute 4.5% of the employee's earnings during 2020, 2019, and 2018. Company contributions to the multiemployer defined contributory trust plan were $2.4 million, $2.6 million, and $2.8 million, respectively, for each of the years ended December 31, 2020, 2019, and 2018. Effective fourth quarter 2020, through collective bargaining negotiations, some of our employees no longer participate in this plan. In addition, for the remaining plan participants, we expect to contribute 4.5% of the employees earnings. After required contributions, we have no further obligation to the plan. The plan and its assets are managed by a joint board of trustees.
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Deferred Compensation Plan
We sponsor a deferred compensation plan. Under the plan, participating employees and directors irrevocably elect each year to defer receipt of a portion of their compensation. A participant's account is credited with imputed interest at a rate equal to 130% of Moody's Composite Average of Yields on Corporate Bonds. Participants may receive payment of their deferred compensation plan balance in a lump sum or in monthly installments over a specified period of years following the termination of their employment with the company. In addition, subject to plan revisions that became effective January 1, 2019, participants may also receive distributions of their deferred compensation accounts while still employed by the company. The deferred compensation plan is unfunded; therefore, benefits are paid from our general assets.
For the years ended December 31, 2020, 2019, and 2018, we recognized $1.0 million, $1.1 million, and $1.0 million, respectively, of interest expense related to the plan. At December 31, 2020 and 2019, we had liabilities related to the plan of $5.9 million and $2.1 million, respectively, recorded in "Accrued liabilities, Compensation and benefits" and $19.8 million and $21.6 million, respectively, recorded in "Other, Compensation and benefits" on our Consolidated Balance Sheets.
Multiemployer Health and Welfare Plan
We have participated in a multiemployer health and welfare plan that covered medical, dental, and life insurance benefits for certain active employees as well as benefits for retired employees. Effective November 30, 2020, through collective bargaining negotiations, our employees no longer participate in this plan. As of December 31, 2019 and 2018, approximately 475 and 604, respectively, of our employees participated in this plan. Per the terms of the representative collective bargaining agreements, we were required to contribute $6.10 per hour per active employee from January 1, 2018, to May 31, 2018. From June 1, 2018, to May 31, 2019, we were required to contribute $6.40 per hour per active employee. From June 1, 2019, to May 31, 2020, we were required to contribute $6.70 per hour per active employee. From June 1, 2020, to November 30, 2020, we were required to contribute $7.00 per hour per active employee. During the years ended December 31, 2020, 2019, and 2018 company contributions to the multiemployer health and welfare plan were $5.8 million, $6.7 million, and $7.7 million, respectively. After required contributions, we have no further obligation to the plan. The trustees of the plan determine the allocation of benefits between active and retired employees.
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Defined Benefit Obligations and Funded Status
The following table, which includes only company-sponsored defined benefit plans, reconciles the beginning and ending balances of our projected benefit obligation and fair value of plan assets. We recognize the underfunded status of our defined benefit pension plans on our Consolidated Balance Sheets. We recognize changes in funded status in the year changes occur through other comprehensive income (loss).

|  | December 31
|  | 2020 |  | 2019
|  | (thousands)
Change in benefit obligation |  |  |  |
Benefit obligation at beginning of year |  | $ | 192,061 |  |  | $ | 176,852 |
Service cost |  | 668 |  |  | 647 |
Interest cost |  | 5,893 |  |  | 7,210 |
Actuarial loss |  | 18,605 |  |  | 29,065 |
Group annuity transactions (a) |  | (76,650) |  |  | (19,848) |
Benefits paid (b) |  | (135,690) |  |  | (1,865) |
Benefit obligation at end of year |  | 4,887 |  |  | 192,061 |
Change in plan assets |  |  |  |
Fair value of plan assets at beginning of year |  | 168,651 |  |  | 154,801 |
Actual return on plan assets |  | 30,930 |  |  | 29,769 |
Employer contributions |  | 12,759 |  |  | 5,238 |
Group annuity transactions (a) |  | (76,650) |  |  | (19,292) |
Benefits paid (b) |  | (135,690) |  |  | (1,865) |
Fair value of plan assets at end of year |  | — |  |  | 168,651 |
Underfunded status |  | $ | (4,887) |  |  | $ | (23,410) |
Amounts recognized on our Consolidated Balance Sheets |  |  |  |
Current liabilities |  | $ | (367) |  |  | $ | (878) |
Noncurrent liabilities |  | (4,520) |  |  | (22,532) |
Net liability |  | $ | (4,887) |  |  | $ | (23,410) |
Amounts recognized in accumulated other comprehensive loss |  |  |  |
Net actuarial loss |  | $ | 1,443 |  |  | $ | 15,332 |
Prior service cost |  | — |  |  | — |
Net loss recognized |  | $ | 1,443 |  |  | $ | 15,332 |

______________________________________
(a) See Defined Benefits Plans above for description of group annuity transactions.
(b) See Defined Benefits Plans above for description of lump-sum payments.
The accumulated benefit obligation for all defined benefit pension plans was $4.9 million and $192.1 million at December 31, 2020 and 2019, respectively. After the Plan Termination, the remaining accumulated benefit obligations are from our unfunded nonqualified defined benefit pension plans.
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Net Periodic Benefit Cost and Other Comprehensive (Income) Loss
The components of net periodic benefit cost and other amounts recognized in other comprehensive (income) loss are as follows:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
Net periodic benefit cost |  |  |  |  |
Service cost | $ | 668 |  |  | $ | 647 |  |  | $ | 794 |
Interest cost | 5,893 |  |  | 7,210 |  |  | 11,344 |
Expected return on plan assets | (5,493) |  |  | (5,903) |  |  | (11,097) |
Amortization of actuarial (gain) loss | 807 |  |  | (175) |  |  | 1,497 |
Plan settlement expense (a) | 6,250 |  |  | 1,342 |  |  | 23,255 |
Net periodic benefit cost | 8,125 |  |  | 3,121 |  |  | 25,793 |
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss |  |  |  |  |
Net actuarial (gain) loss | (6,832) |  |  | 4,642 |  |  | (14,178) |
Amortization of actuarial gain (loss) | (807) |  |  | 175 |  |  | (1,497) |
Effect of settlements | (6,250) |  |  | (1,342) |  |  | (23,255) |
Total recognized in other comprehensive (income) loss | (13,889) |  |  | 3,475 |  |  | (38,930) |
Total recognized in net periodic cost and other comprehensive (income) loss | $ | (5,764) |  |  | $ | 6,596 |  |  | $ | (13,137) |

______________________________________
(a) Plan settlement expense during the years ended December 31, 2020, 2019, and 2018 includes $6.3 million, $1.3 million and $23.3 million, respectively, of settlement charges related to the transfers of pension plan assets to Prudential for the purchase of group annuity contracts, as well as lump-sum payments in 2020.
Assumptions
The assumptions used in accounting for our plans are estimates of factors that will determine, among other things, the amount and timing of future contributions. The following table presents the assumptions used in the measurement of our benefit obligations:

| December 31
| 2020 |  | 2019
Weighted average assumptions |  |  |
Discount rate | 2.00 | % |  | 3.10 | %
Rate of compensation increases (a) | — | % |  | — | %

The following table presents the assumptions used in the measurement of net periodic benefit cost:

|  | December 31
|  | 2020 |  | 2019 |  | 2018 (b) |  |
Weighted average assumptions |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  | 3.10 | % |  | 4.15 | % |  | 3.95 | % | / | 4.05 | % | / | 3.40 | % |  |  |
Expected long-term rate of return on plan assets |  | 3.50 | % |  | 3.85 | % |  | 3.85 | % | / | 4.50 | % | / | 4.75 | % |  |  |
Rate of compensation increases (a) |  | — | % |  | — | % |  |  |  |  |  | — | % |  |

_______________________________________
(a) Pension benefits for all salaried employees are frozen, resulting in an assumption for the rate of compensation increase of zero.
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(b) Prior to the remeasurements of our qualified defined benefit pension plan on April 25, 2018, and August 10, 2018, the discount rates were 3.40% and 4.05%, respectively, and the expected rates of return on plan assets were 4.75% and 4.50%, respectively. The discount rate and expected rate of return on plan assets after the August 10, 2018 remeasurement were 3.95% and 3.85%, respectively.
Discount Rate Assumption. The discount rate reflects the current rate at which the pension obligations could be settled at each measurement date of the plan. In all years presented, the discount rates were determined by matching the expected plan benefit payments against a spot rate yield curve constructed to replicate the yields of Aa-graded corporate bonds.
Asset Return Assumption. Prior to the Plan Termination, we based our expected long-term rate of return on plan assets on a weighted average of our expected returns for the major asset classes in which we invest. The weights we assigned each asset class were based on our investment strategy. Expected returns for the asset classes were based on long-term historical returns, inflation expectations, forecasted gross domestic product, earnings growth, and other economic factors. We developed our return assumption based on a review of the fund manager's estimates of future market expectations by broad asset class and expected long-term rates of return from external investment managers.
Retirement and Mortality Rates. These rates are developed to reflect actual and projected plan experience. In 2020, we used the Pri-2012 mortality tables projected forward using MP-2020 on a generational basis. In 2019, we used the Pri-2012 mortality tables projected forward using MP-2019 on a generational basis.
Fair Value Measurements of Plan Assets
The following table sets forth by level, within the fair value hierarchy, the pension plan assets, by major asset category, at fair value at December 31, 2019:

|  | December 31, 2019
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) (a) |  | Significant Unobservable Inputs (Level 3) |  | Total
|  | (thousands)
Fixed-income securities (b) |  | $ | — |  |  | $ | 152,530 |  |  | $ | — |  |  | $ | 152,530 |
Multi-asset class fund (c) |  | — |  |  | 16,361 |  |  | — |  |  | 16,361 |
Total investments at fair value |  | $ | — |  |  | $ | 168,891 |  |  | $ | — |  |  | 168,891 |
Receivables and accrued expenses, net |  |  |  |  |  |  |  | (240) |
Fair value of plan assets |  |  |  |  |  |  |  | $ | 168,651 |

_______________________________________
(a)Securities represent common collective trusts managed and valued by Russell Trust Company, the administrator of the funds. While the underlying assets are actively traded on an exchange, the funds are not. The investments in equity and fixed-income securities are considered to have a readily determinable fair value because the fair value per share (unit) is determined and published and is the basis for current transactions. We had the ability to redeem these securities with a 1 day notice.
(b)Invested in the Russell Long Duration Fixed Income Fund, which is designed to provide current income and capital appreciation through diversified strategies including sector rotation, modest interest rate timing, security selection, and tactical use of high-yield, emerging market bonds and other non-index securities. In addition, our investments in this category included the Russell 14 Year LDI Fixed Income Fund. We also were invested in the Russell 8 Year LDI Fixed Income Fund. These LDI funds invest primarily in investment grade bonds that closely match those found in discount rate curves used to value U.S. pension liabilities and seeks to provide additional incremental return through modest interest rate timing, security selection, and tactical use of non-credit sectors. In addition, our investments in this category included Russell STRIPS Fixed Income Funds with duration profiles of 10, 15, and 28 years. These funds invest in a subset of the STRIPS universe with a similar duration profile as their respective Bloomberg Barclays U.S. STRIPS Index.
(c)Invested in the Russell Multi-Asset Core Plus Fund, which is designed to provide long-term growth by providing a diversified portfolio of investments that has an overall strategic allocation of 75% global equity, 15% marketable real assets, and 10% global fixed income.
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Cash Flows
Since 2012, we contributed a total of four company-owned real property locations from our Building Materials Distribution segment to our Pension Plan, which we then leased from the Pension Plan. These contributions constituted related party transactions. We determined that these contributed properties did not meet the accounting definition of a plan asset within the scope of Accounting Standards Codification 715, Compensation - Retirement Benefits, and, therefore, were not included in plan assets and had no impact on the net pension liability. However, the lease payments and payments for the repurchase of the contributed properties are recorded as pension contributions. During the years ended December 31, 2020, 2019, and 2018, we repurchased two, one, and one, respectively, of the real property locations we previously had contributed to our Pension Plan for approximately $11.4 million (the 2020 Repurchases), $3.6 million (the 2019 Repurchase) and $4.0 million (the 2018 Repurchase), respectively, which were recorded as pension contributions.
Our practice is to fund the pension plans in amounts sufficient to meet the minimum requirements of U.S. federal laws and regulations. For the years ended December 31, 2020, 2019, and 2018, we made cash contributions to our pension plans totaling $12.8 million, $5.2 million, and $26.1 million, respectively. During 2020, cash contributions include $11.4 million for the 2020 Repurchases and $0.6 million of lease payments. During 2019, cash contributions include $3.6 million for the 2019 Repurchase and $1.1 million of lease payments. During 2018, cash contributions include a $20.0 million discretionary contribution, $4.0 million for the 2018 Repurchase, and $1.5 million of lease payments. After the Plan Termination, we will have no federally required contributions to the Pension Plan. For 2021, we expect to make cash contributions of approximately $0.4 million to our nonqualified pension plans, reflecting benefit payments to plan participants. Nonqualified pension benefit payments are paid by the company.
The following benefit payments are expected to be paid to nonqualified plan participants (in thousands):

2021 |  | $ | 367 |
2022 |  | 380 |
2023 |  | 382 |
2024 |  | 368 |
2025 |  | 314 |
Years 2026-2030 |  | 1,373 |

13. Long-Term Incentive Compensation Plans
Stock-Based Compensation
In April 2016, we adopted the 2016 Boise Cascade Omnibus Incentive Plan (2016 Incentive Plan), which superseded the 2013 Incentive Compensation Plan (2013 Incentive Plan). After the effective date of the 2016 Incentive Plan, no awards were granted under the 2013 Incentive Plan. The 2016 Incentive Plan provides for grants of stock options, stock appreciation rights, restricted stock, other stock-based awards, cash-based compensation, and performance awards. Directors, officers, and other employees, as well as consultants and advisors, are eligible for grants under the 2016 Incentive Plan. These awards are at the discretion of the Compensation Committee of our board of directors, and they vest and expire in accordance with terms established at the time of grant. All awards under the 2016 Incentive Plan, other than stock options or stock appreciation rights, are eligible to participate in dividend or dividend equivalent payments, if any, which we accrue to be paid when the awards vest. Shares issued pursuant to awards under the incentive plans are from our authorized but unissued shares. The maximum number of shares approved for grant under the 2016 Incentive Plan is 3.7 million shares.
In 2020, 2019, and 2018, we granted two types of stock-based awards under the 2016 Incentive Plan: performance stock units (PSUs) and restricted stock units (RSUs). As of December 31, 2020, 2.5 million shares remained available for future issuance under the 2016 Incentive Plan.
PSU and RSU Awards
In 2020, we granted 94,850 PSUs to our officers and other employees, subject to performance and service conditions, at a weighted average grant date fair value of $36.45. For the officers, the number of shares actually awarded will range from 0% to 200% of the target amount, dependent upon Boise Cascade's 2020 return on invested capital (ROIC), as approved by our Compensation Committee in accordance with the related grant agreement. For the other employees, the number of shares actually awarded will range from 0% to 200% of the target amount, depending upon Boise Cascade's 2020 EBITDA, defined as
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income before interest (interest expense and interest income), income taxes, and depreciation and amortization, determined in accordance with the related grant agreement. Because the ROIC and EBITDA components contain a performance condition, we record compensation expense over the requisite service period based on the most probable number of shares expected to vest.
In 2019 and 2018, we granted 110,923 and 78,976 PSUs, at a weighted average grant date fair value of $29.48 and $43.05, respectively, to our officers and other employees, subject to performance and service conditions. During the 2019 performance period, officers and other employees earned 93% and 96%, respectively, of the target based on Boise Cascade’s 2019 ROIC and EBITDA, determined by our Compensation Committee in accordance with the related grant agreements. During the 2018 performance period, officers and other employees earned 100% and 110%, respectively, of the target based on Boise Cascade’s 2018 ROIC and EBITDA, determined by our Compensation Committee in accordance with the related grant agreements.
The PSUs granted to officers generally vest in a single installment three years from the grant date, while the PSUs granted to other employees vest in three equal tranches each year after the grant date.
In 2020, 2019, and 2018, we granted an aggregate of 125,716, 167,861, and 99,087 RSUs, at a weighted average grant date fair value of $36.45, $29.13, and $43.08, respectively, to our officers, other employees, and nonemployee directors with only service conditions. The RSUs granted to officers and other employees vest in three equal tranches each year after the grant date. The RSUs granted to nonemployee directors vest over a one year period.
We based the fair value of PSU and RSU awards on the closing market price of our common stock on the grant date. During the years ended December 31, 2020, 2019, and 2018, the total fair value of PSUs and RSUs vested was $11.1 million, $11.4 million, and $15.4 million, respectively.
The following summarizes the activity of our PSUs and RSUs awarded under our incentive plan for the year ended December 31, 2020:

|  | PSUs |  | RSUs
|  | Number of shares |  | Weighted Average Grant-Date Fair Value |  | Number of shares |  | Weighted Average Grant-Date Fair Value
Outstanding, December 31, 2019 |  | 295,347 |  |  | $ | 31.09 |  |  | 257,564 |  |  | $ | 31.14 |
Granted |  | 94,850 |  |  | 36.45 |  |  | 125,716 |  |  | 36.45 |
Performance condition adjustment (a) |  | (6,989) |  |  | 29.48 |  |  | — |  |  | — |
Vested |  | (162,622) |  |  | 28.93 |  |  | (143,807) |  |  | 30.88 |
Forfeited |  | (24,246) |  |  | 32.57 |  |  | (26,707) |  |  | 32.82 |
Outstanding, December 31, 2020 |  | 196,340 |  |  | $ | 35.34 |  |  | 212,766 |  |  | $ | 34.24 |

__________________
(a) Represents total PSUs forfeited during the year ended December 31, 2020, related to the 2019 performance condition adjustment described above.
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Compensation Expense
We record compensation expense over the awards' vesting period and account for share-based award forfeitures as they occur, rather than making estimates of future forfeitures. Any shares not vested are forfeited. We recognize stock awards with only service conditions on a straight-line basis over the requisite service period. Most of our share-based compensation expense was recorded in "General and administrative expenses" in our Consolidated Statements of Operations. Total stock-based compensation recognized from PSUs and RSUs, net of forfeitures, was as follows:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
PSUs | $ | 3,795 |  |  | $ | 3,340 |  |  | $ | 4,005 |
RSUs | 4,025 |  |  | 4,633 |  |  | 4,826 |
Total | $ | 7,820 |  |  | $ | 7,973 |  |  | $ | 8,831 |

For the years ended December 31, 2020, 2019, and 2018, the related tax benefit was $2.0 million, $2.0 million, and $2.2 million, respectively. As of December 31, 2020, total unrecognized compensation expense related to nonvested share-based compensation arrangements was $9.2 million. This expense is expected to be recognized over a weighted-average period of 1.9 years.
Long-Term Incentive Cash Plan
In 2020, 2019, and 2018, certain non-executive employees participated in a long-term incentive plan that pays awards in cash (LTI Cash Plan). The LTI Cash Plan provides an award notice to participants granting them the opportunity to earn a cash award, half of which is subject to service conditions only, with the other half subject to performance and service conditions. For the performance based cash award, the amount of cash actually awarded will range from 0% to 200% of the target amount, depending upon Boise Cascade's EBITDA, determined in accordance with the related grant agreement. Under the LTI Cash Plan, the award is paid in three equal installments each year after the grant date, with continued employment as a precondition for receipt of each award installment. We recognize compensation for cash awards with only service conditions on a straight-line basis over the requisite service period. Cash awards subject to performance conditions are also recognized on a straight-line basis over the requisite service period, based on the most probable amount of cash to be paid subject to achievement of the performance condition.
In 2020, 2019, and 2018, we recognized $3.9 million, $2.2 million, and $1.4 million, respectively, of LTI Cash Plan expense, primarily recorded in "General and administrative expenses" in our Consolidated Statements of Operations. During the 2019 and 2018 performance periods, cash awards earned 96% and 110%, respectively, of the target based on Boise Cascade’s 2019 and 2018 EBITDA, respectively, determined by our Compensation Committee in accordance with the related grant agreements.
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14. Stockholders' Equity
Our certificate of incorporation has authorized 300,000,000 shares of common stock and 50,000,000 shares of preferred stock. No preferred stock was issued or outstanding as of December 31, 2020 and 2019. We had 44,568,299 and 44,352,778 shares of common stock issued and 39,201,226 and 38,985,705 shares of common stock outstanding as of December 31, 2020 and 2019, respectively. Each share of common stock entitles the holder to one vote on matters to be voted on by the stockholders of Boise Cascade.
Dividends
On November 14, 2017, we announced that our board of directors approved a dividend policy to pay quarterly cash dividends to holders of our common stock. Our board of directors declared and paid the following dividends during each of the respective quarters for the years ended December 31, 2020, 2019, and 2018:

| Dividends Per Share |  | Amount Paid
2020 |  |  | (in thousands)
First Quarter (a) | $ | 0.10 |  |  | $ | 4,645 |
Second Quarter | 0.10 |  |  | 3,917 |
Third Quarter (b) | 1.70 |  |  | 3,991 |
Fourth Quarter (b) | 0.10 |  |  | 66,642 |
Total | $ | 2.00 |  |  | $ | 79,195 |
2019 |  |  |
First Quarter (a) | $ | 0.09 |  |  | $ | 4,053 |
Second Quarter | 0.09 |  |  | 3,509 |
Third Quarter | 0.09 |  |  | 3,508 |
Fourth Quarter (c) | 1.10 |  |  | 42,884 |
Total | $ | 1.37 |  |  | $ | 53,954 |
2018 |  |  |
First Quarter (a) | $ | 0.07 |  |  | $ | 2,758 |
Second Quarter | 0.07 |  |  | 2,723 |
Third Quarter (c) | 1.07 |  |  | 41,632 |
Fourth Quarter | 0.09 |  |  | 3,502 |
Total | $ | 1.30 |  |  | $ | 50,615 |

__________________
(a)Includes payments of dividend equivalents on RSUs and PSUs which vested in first quarter of each year.
(b)During third quarter 2020, our board of directors declared a supplemental dividend of $1.60 per share on our common stock, which was paid in fourth quarter 2020.
(c)During each fourth quarter 2019 and third quarter 2018, our board of directors declared and paid a supplemental dividend of $1.00 per share of our common stock.
On February 5, 2021, our board of directors declared a dividend of $0.10 per share of our common stock, payable on March 15, 2021, to stockholders of record on February 22, 2021. For a description of the restrictions in our asset-based credit facility and the indenture governing our senior notes on our ability to pay dividends, see Note 10, Debt.
Future quarterly dividend declarations, including amount per share, record date and payment date, will be made at the discretion of our board of directors and will depend upon, among other things, legal capital requirements and surplus, our future operations and earnings, general financial condition, contractual obligations, restrictions imposed by our asset-based credit
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facility and the indenture governing our senior notes, applicable laws, and other factors that our board of directors may deem relevant.
Stock Repurchase
On February 25, 2015, our board of directors authorized a two million share repurchase program (Program) pursuant to which we may, from time to time, purchase shares of our common stock through various means including, without limitation, open market transactions, privately negotiated transactions, or accelerated share repurchase transactions. We are not obligated to purchase any shares and there is no set date that the Program will expire. The board may increase or decrease the number of shares under the Program or terminate the Program in its discretion at any time. During 2020 and 2019, we did not purchase any shares under the Program. During 2018, we repurchased 200,000 shares under the program at a cost of $4.9 million, or an average of $24.65 per share. The shares were purchased with cash on hand and are recorded as "Treasury stock" on our Consolidated Balance Sheet. As of December 31, 2020, there were 496,989 shares of common stock that may yet be purchased under the Program.
Accumulated Other Comprehensive Loss
Changes in accumulated other comprehensive loss are as follows:

|  | Changes in Accumulated Other Comprehensive Loss
|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Beginning Balance, net of taxes |  | $ | (50,248) |  |  | $ | (47,652) |  |  | $ | (76,702) |
Net actuarial gain (loss), before taxes |  | 6,832 |  |  | (4,642) |  |  | 14,178 |
Amortization of actuarial (gain) loss, before taxes (a) |  | 807 |  |  | (175) |  |  | 1,497 |
Effect of settlements, before taxes (a) |  | 6,250 |  |  | 1,342 |  |  | 23,255 |
Income taxes (b) |  | 35,281 |  |  | 879 |  |  | (9,880) |
Ending Balance, net of taxes |  | $ | (1,078) |  |  | $ | (50,248) |  |  | $ | (47,652) |

___________________________________
(a) Represents amounts reclassified from accumulated other comprehensive loss. These amounts are included in the computation of net periodic pension cost. For additional information, see Note 12, Retirement and Benefit Plans.
(b) For the year ended December 31, 2020, income taxes include $38.8 million related to the release of stranded tax effects upon Plan Termination, as discussed in Note 4, Income Taxes.
15. Transactions With Related Party
Louisiana Timber Procurement Company, L.L.C. (LTP) is an unconsolidated variable-interest entity that is 50% owned by us and 50% owned by Packaging Corporation of America (PCA). LTP procures sawtimber, pulpwood, residual chips, and other residual wood fiber to meet the wood and fiber requirements of us and PCA in Louisiana. We are not the primary beneficiary of LTP as we do not have power to direct the activities that most significantly affect the economic performance of LTP. Accordingly, we do not consolidate LTP's results in our financial statements.
Sales
Related-party sales to LTP from our Wood Products segment in our Consolidated Statements of Operations were $12.6 million, $16.5 million, and $16.7 million, respectively, during the years ended December 31, 2020, 2019, and 2018. These sales are recorded in "Sales" in our Consolidated Statements of Operations.
Costs and Expenses
Related-party wood fiber purchases from LTP were $70.6 million, $81.7 million, and $83.1 million, respectively, during the years ended December 31, 2020, 2019, and 2018. These costs are recorded in "Materials, labor, and other operating expenses (excluding depreciation)" in our Consolidated Statements of Operations.
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16. Financial Instrument Risk
In the normal course of business, we are exposed to financial risks such as changes in commodity prices, interest rates, and foreign currency exchange rates. In 2020, 2019, and 2018, we did not use derivative instruments to manage these risks, except for interest rate swaps as discussed below.
Commodity Price Risk
Many of the products we manufacture or purchase and resell and some of our key production inputs are commodities whose price is determined by the market's supply and demand for such products. Price fluctuations in our selling prices and key costs have a significant effect on our financial performance. The markets for most of these commodities are cyclical and are primarily affected by various economic and industry factors, including the strength of the U.S. housing market, net import and export activity, changes in or disruptions to industry production capacity, changes in inventory levels, and other factors beyond our control.
Interest Rate Risk
We are exposed to interest rate risk arising from fluctuations in variable-rate LIBOR on our term loan and when we have loan amounts outstanding on our Revolving Credit Facility. At December 31, 2020, we had $50.0 million of variable-rate debt outstanding based on one-month LIBOR after the pay-off of our $45.0 million term loan in July 2020, described in Note 10, Debt. During the year ended December 31, 2020, we liquidated our interest rate swap agreements with notional principal amounts of $45.0 million in conjunction with the pay-off of the $45.0 million term loan. Our objective is to limit the variability of interest payments on our debt. To meet this objective, we enter into receive-variable, pay-fixed interest rate swaps to change the variable-rate cash flow exposure to fixed-rate cash flows. In accordance with our risk management strategy, we actively monitor our interest rate exposure and use derivative instruments from time to time to manage the related risk. We do not speculate using derivative instruments.
At December 31, 2020, we had two interest rate swap agreements. Under the interest rate swaps, we receive one-month LIBOR-based variable interest rate payments and make fixed interest rate payments, thereby fixing the interest rate on $50.0 million of variable rate debt exposure. Payments on one interest rate swap, entered into in 2016, with a notional principal amount of $50.0 million is due on a monthly basis at an annual fixed rate of 1.007% and expires in February 2022 (Initial Swap). During second quarter 2020, we entered into another forward interest rate swap agreement which commences on the expiration date of the Initial Swap. Payments on this interest rate swap with a notional principal amount of $50.0 million will be due on a monthly basis at an annual fixed rate of 0.39% and expires in June 2025.
The interest rate swap agreements were not designated as cash flow hedges, and as a result, all changes in the fair value are recognized in "Change in fair value of interest rate swaps" in our Consolidated Statements of Operations rather than through other comprehensive income. At December 31, 2020, we recorded a long-term liability of $0.6 million in "Other long-term liabilities" on our Consolidated Balance Sheets, representing the fair value of the interest rate swap agreements. At December 31, 2019, we recorded a long-term asset of $0.8 million in "Other assets" on our Consolidated Balance Sheets, representing the fair value of the interest rate swap agreements. The swaps were valued based on observable inputs for similar assets and liabilities and other observable inputs for interest rates and yield curves (Level 2 inputs).
Foreign Currency Risk
We have sales in countries outside the U.S. As a result, we are exposed to movements in foreign currency exchange rates, primarily in Canada, but we do not believe our exposure to currency fluctuations is significant.
17. Segment Information
We operate our business using two reportable segments: Wood Products and Building Materials Distribution. These segments represent distinct businesses that are managed separately because of differing products and services. Each of these businesses requires distinct operating and marketing strategies. Management reviews the performance of the company based on these segments. For a description of the products sold by our segments, see Note 3, Revenues.
Unallocated corporate costs include corporate support staff services, related assets and liabilities, and pension plan activity. Support services include, but are not limited to, information technology, human resources, finance, accounting, and
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legal functions. Specified expenses are allocated to the segments. For many of these allocated expenses, the related assets and liabilities remain in corporate.
The segments follow the accounting principles described in Note 2, Summary of Significant Accounting Policies.
For the year ended December 31, 2020, one customer accounted for 11% of total sales, when combining sales from Wood Products and BMD to that customer. For the years ended December 31, 2019 and 2018, no customers accounted for 10% or more of total sales. Sales to foreign unaffiliated customers were approximately $71 million, $76 million, and $96 million, respectively, for the years ended December 31, 2020, 2019, and 2018.
At December 31, 2020, 2019, and 2018, and for the years then ended, long-lived assets located in foreign countries and net sales originating in foreign countries were not material.
Wood Products and Building Materials Distribution segment sales to external customers, including related parties, by product line are as follows:

|  | Year Ended December 31
|  | 2020 |  | 2019 |  | 2018
|  | (millions)
Wood Products (a) |  |  |  |  |  |
LVL |  | $ | 18.4 |  |  | $ | 39.5 |  |  | $ | 42.2 |
I-joists |  | 7.3 |  |  | 22.1 |  |  | 29.3 |
Other engineered wood products |  | 23.9 |  |  | 26.8 |  |  | 25.3 |
Plywood and veneer |  | 332.7 |  |  | 255.1 |  |  | 336.2 |
Lumber (b) |  | 54.7 |  |  | 52.5 |  |  | 86.0 |
Byproducts |  | 68.6 |  |  | 75.1 |  |  | 87.3 |
Particleboard (b) |  | — |  |  | — |  |  | 37.5 |
Other |  | 17.1 |  |  | 34.7 |  |  | 63.9 |
|  | 522.8 |  |  | 505.7 |  |  | 707.7 |
Building Materials Distribution |  |  |  |  |  |
Commodity |  | 2,309.9 |  |  | 1,725.4 |  |  | 2,070.1 |
General line |  | 1,762.3 |  |  | 1,580.7 |  |  | 1,421.5 |
Engineered wood products |  | 879.9 |  |  | 831.6 |  |  | 796.0 |
|  | 4,952.0 |  |  | 4,137.7 |  |  | 4,287.6 |
|  | $ | 5,474.8 |  |  | $ | 4,643.4 |  |  | $ | 4,995.3 |

___________________________________
(a)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.
(b)In fourth quarter 2018, we sold two lumber mills and our particleboard plant located in Northeast Oregon. For additional information, see Note 7, Sale of Manufacturing Facilities.
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An analysis of our operations by segment is as follows:

| Year Ended December 31
| 2020 |  | 2019 |  | 2018
| (thousands)
Net sales by segment |  |  |  |  |
Wood Products | $ | 1,323,901 |  |  | $ | 1,275,167 |  |  | $ | 1,533,270 |
Building Materials Distribution | 4,952,018 |  |  | 4,137,719 |  |  | 4,287,702 |
Intersegment eliminations (a) | (801,081) |  |  | (769,482) |  |  | (825,682) |
Total net sales | $ | 5,474,838 |  |  | $ | 4,643,404 |  |  | $ | 4,995,290 |
Segment operating income (loss) |  |  |  |  |
Wood Products (b) | $ | 127,720 |  |  | $ | 54,197 |  |  | $ | (10,022) |
Building Materials Distribution | 247,494 |  |  | 116,236 |  |  | 112,510 |
Total segment operating income | 375,214 |  |  | 170,433 |  |  | 102,488 |
Unallocated corporate costs | (40,185) |  |  | (33,974) |  |  | (30,450) |
Income from operations | $ | 335,029 |  |  | $ | 136,459 |  |  | $ | 72,038 |
Depreciation and amortization |  |  |  |  |
Wood Products (c) | $ | 71,141 |  |  | $ | 57,671 |  |  | $ | 126,989 |
Building Materials Distribution | 22,460 |  |  | 20,769 |  |  | 18,280 |
Corporate | 1,568 |  |  | 1,701 |  |  | 1,568 |
Total depreciation and amortization | $ | 95,169 |  |  | $ | 80,141 |  |  | $ | 146,837 |
Capital expenditures |  |  |  |  |
Wood Products | $ | 38,230 |  |  | $ | 53,460 |  |  | $ | 53,392 |
Building Materials Distribution (d) | 39,976 |  |  | 40,722 |  |  | 51,306 |
Corporate | 1,223 |  |  | 4,214 |  |  | 771 |
Total capital expenditures | $ | 79,429 |  |  | $ | 98,396 |  |  | $ | 105,469 |

__________________
(a)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.
(b)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.
(c)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.
(d)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.

| December 31
| 2020 |  | 2019
| (thousands)
Assets |  |  |
Wood Products | $ | 605,359 |  |  | $ | 635,475 |
Building Materials Distribution | 957,177 |  |  | 768,095 |
Corporate | 403,182 |  |  | 289,781 |
Total assets | $ | 1,965,718 |  |  | $ | 1,693,351 |

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18. Commitments, Legal Proceedings and Contingencies, and Guarantees
Commitments
We have commitments for leases and long-term debt that are discussed further in Note 10, Debt, and Note 11, Leases. In addition, we have purchase obligations for goods and services, capital expenditures, and raw materials entered into in the normal course of business.
We are a party to a number of long-term log supply agreements. At December 31, 2020, our total obligation for log purchases under contracts with third parties was approximately $214 million based on fixed contract pricing or estimated current contractual index pricing for variable contracts. Under certain log supply agreements, we have the right to cancel or reduce our commitments in the event of a mill curtailment or shutdown. Future purchase prices under most of the variable-price agreements will be set quarterly or semiannually based on regional market prices. Our log requirements and our access to supply, as well as the cost of obtaining logs, are subject to change based on, among other things, the effect of governmental laws and regulations, our manufacturing operations not operating in the normal course of business, log availability, and the status of environmental appeals. Except for deposits required pursuant to log supply contracts, these obligations are not recorded in our consolidated financial statements until contract payment terms take effect.
Legal Proceedings and Contingencies
We are a party to legal proceedings that arise in the ordinary course of our business, including commercial liability claims, premises claims, environmental claims, and employment-related claims, among others. As of the date of this filing, we believe it is not reasonably possible that any of the legal actions against us will, individually or in the aggregate, have a material adverse effect on our financial position, results of operations, or cash flows.
Guarantees
We provide guarantees, indemnifications, and assurances to others.
Boise Cascade Company and its subsidiaries (Boise Cascade Building Materials Distribution, L.L.C., and Boise Cascade Wood Products, L.L.C.) act as co-borrowers under our Revolving Credit Facility and ABL Term Loan, described in Note 10, Debt. Their obligations are guaranteed by each of our remaining domestic subsidiaries.
Boise Cascade has issued $400.0 million of 4.875% senior notes due in 2030. At December 31, 2020, $400.0 million of the 2030 Notes were outstanding. The 2030 Notes are guaranteed by each of Boise Cascade Company's existing and future direct or indirect domestic subsidiaries that is a guarantor or co-borrower under our Revolving Credit Facility. See Note 10, Debt, for more information.
Boise Cascade issued guarantees to a limited number of trade creditors of one or more of its principal operating subsidiaries, Boise Cascade Building Materials Distribution, L.L.C., and Boise Cascade Wood Products, L.L.C., for trade credit obligations arising in the ordinary course of the business of such operating subsidiaries. These included guarantees of obligations with respect to present and future log agreements of Boise Cascade Wood Products, L.L.C. and several facility leases entered into by Boise Cascade Building Materials Distribution, L.L.C. Boise Cascade's exposure under these agreements is limited to future log purchases and the minimum lease payment requirements under the agreements.
We enter into a wide range of indemnification arrangements in the ordinary course of business. At December 31, 2020, we are not aware of any material liabilities arising from these indemnifications.
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19. Quarterly Results of Operations (unaudited)

|  | 2020
|  | First Quarter (a) |  | Second Quarter |  | Third Quarter (b) |  | Fourth Quarter (c)
|  | (millions, except per-share amounts)
Net sales |  | $ | 1,170.5 |  |  | $ | 1,242.8 |  |  | $ | 1,589.3 |  |  | $ | 1,472.2 |
Income from operations |  | $ | 25.5 |  |  | $ | 51.8 |  |  | $ | 158.6 |  |  | $ | 99.1 |
Net income |  | $ | 12.2 |  |  | $ | 33.6 |  |  | $ | 103.2 |  |  | $ | 26.0 |
Net income per common share – Basic |  | $ | 0.31 |  |  | $ | 0.85 |  |  | $ | 2.62 |  |  | $ | 0.66 |
Net income per common share – Diluted |  | $ | 0.31 |  |  | $ | 0.85 |  |  | $ | 2.61 |  |  | $ | 0.66 |

|  | 2019
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
|  | (millions, except per-share amounts)
Net sales |  | $ | 1,042.1 |  |  | $ | 1,230.1 |  |  | $ | 1,269.5 |  |  | $ | 1,101.7 |
Income from operations |  | $ | 21.7 |  |  | $ | 45.1 |  |  | $ | 44.9 |  |  | $ | 24.8 |
Net income |  | $ | 11.4 |  |  | $ | 27.7 |  |  | $ | 27.2 |  |  | $ | 14.6 |
Net income per common share – Basic |  | $ | 0.29 |  |  | $ | 0.71 |  |  | $ | 0.70 |  |  | $ | 0.37 |
Net income per common share – Diluted |  | $ | 0.29 |  |  | $ | 0.71 |  |  | $ | 0.69 |  |  | $ | 0.37 |

__________________
(a)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.
(b)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.
(c)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.
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Report of Independent Registered Public Accounting Firm
To the Stockholders and Board of Directors
Boise Cascade Company:
Opinion on the Consolidated Financial Statements
We have audited the accompanying consolidated balance sheets of Boise Cascade Company and subsidiaries (the Company) as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2020, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2020, in conformity with U.S. generally accepted accounting principles.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated February 22, 2021 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.
Change in Accounting Principle
As discussed in Note 11 to the consolidated financial statements, the Company has changed its method of accounting for leases as of January 1, 2019 due to the adoption of FASB Accounting Standards Update ASU No. 2016-02, Leases (Topic 842).
Basis for Opinion
These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
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Customer rebates payable for engineered wood products
As discussed in Note 3 to the consolidated financial statements, the Company records an accrual for estimated rebates payable to third parties. The Company provides engineered wood products (EWP) rebates at various stages of the supply chain (including distributors, retail lumberyards, and homebuilders) as a means to increase sales. EWP rebates are based on the volume of purchases (measured in dollars or units), among other factors such as customer loyalty, conversion, and commitment incentives, as well as temporary protection from price increases. As of December 31, 2020, the Company has recorded $56.3 million of rebates payable to third parties of which $40.7 million represents payables related to EWP rebates.
We identified the rebates payable for EWP as a critical audit matter. Evaluating the Company's estimate of the year-end rebates payable for EWP, which is based on a sell-through model as EWP products transition through the supply chain, required a high degree of subjective auditor judgement. Specifically, the estimate required significant auditor judgement because it is challenging, due to the time lag of information, to estimate sales subject to rebate as the products transition through the supply chain from the Company's wholesale distribution customers to retail lumberyards, and homebuilders.
The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls over the customer rebates payable process. This included controls related to the Company's process to evaluate the information used to estimate sales subject to rebate related to the products as they transition through the supply chain. We evaluated the Company’s ability to accurately estimate its year-end EWP rebate payable in the aggregate by comparing the prior year estimate to the actual rebate payments made. In addition, subsequent to year end, we tested a sample of EWP rebates at the individual entity level by developing an independent estimate of the payable utilizing key contract terms, current year reported sales and usage metrics, current year payment detail, and historic sales and usage metrics to compare to the Company’s estimate of the EWP payable required.
/s/ KPMG LLP
We have served as the Company’s auditor since 2005.
Boise, Idaho
February 22, 2021
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Report of Independent Registered Public Accounting Firm
To the Stockholders and Board of Directors
Boise Cascade Company:
Opinion on Internal Control Over Financial Reporting
We have audited Boise Cascade Company and subsidiaries’ (the Company) internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2020, and the related notes (collectively, the consolidated financial statements), and our report dated February 22, 2021 expressed an unqualified opinion on those consolidated financial statements.
Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control Over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
/s/ KPMG LLP
Boise, Idaho
February 22, 2021
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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.
ITEM 9A. CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
We maintain "disclosure controls and procedures," as defined in Rule 13a-15(e) under the Exchange Act. We have designed these controls and procedures to reasonably assure that information required to be disclosed in our reports filed or submitted under the Exchange Act, is recorded, processed, summarized, and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. We have also designed our disclosure controls to provide reasonable assurance that such information is accumulated and communicated to our senior management, including our chief executive officer (CEO) and our chief financial officer (CFO), as appropriate, to allow them to make timely decisions regarding our required disclosures. Based on their evaluation, our CEO and CFO have concluded that as of December 31, 2020, our disclosure controls and procedures were effective in meeting the objectives for which they were designed and were operating at a reasonable assurance level.
Limitations on the Effectiveness of Controls and Procedures
In designing and evaluating our disclosure and/or internal controls and procedures, we recognized that no matter how well conceived and well operated, a control system can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of its inherent limitations, a control system, no matter how well designed, may not prevent or detect misstatements due to error or fraud. Additionally, in designing a control system, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. We have also designed our disclosure and internal controls and procedures based in part upon assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.
Management's Report on Internal Control Over Financial Reporting
The management of Boise Cascade Company (Boise Cascade) is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a-15(f) or 15d-15(f) under the Exchange Act. Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the U.S. Internal control over financial reporting includes those policies and procedures that:
•pertain to the maintenance of records that in reasonable detail accurately and fairly reflect our transactions and dispositions of assets;
•provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles;
•provide reasonable assurance that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
•provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on our consolidated financial statements.
Internal control over financial reporting includes the controls themselves, monitoring and internal auditing practices, and actions taken to correct deficiencies as identified. As of December 31, 2020, management conducted an assessment of the effectiveness of Boise Cascade's internal control over financial reporting based on criteria for effective internal control over financial reporting described in "Internal Control—Integrated Framework" (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment, management has concluded as of December 31, 2020, our internal control over financial reporting was effective.
The effectiveness of our internal control over financial reporting as of December 31, 2020, has been audited by KPMG LLP, an independent registered public accounting firm, as stated in its report, which is included herein.
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Changes in Internal Control Over Financial Reporting
There were no changes in our internal control over financial reporting that occurred during our latest fiscal quarter that has materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
ITEM 9B. OTHER INFORMATION
None.
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PART III
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE
For information with respect to the executive officers of the Registrant, see "Executive Officers and Key Management" in "Item 1. Business" of this Form 10-K.
We have adopted a Code of Ethics that applies to all of our employees, including our chief executive officer, chief financial officer, and principal accounting officer. Our Code of Ethics is available on our website at www.bc.com by clicking on Code of Ethics. Our website is not part of, and is not incorporated by reference to, this Form 10-K. If we amend or grant a waiver of one or more of the provisions of our Code of Ethics, we intend to satisfy the requirements under Item 5.05 of Item 8-K regarding the disclosure of amendments to or waivers from provisions of our Code of Ethics that apply to our principal executive officer and financial and accounting officers by posting the required information on our website at the above address.
Information with respect to our directors and certain other corporate governance matters is incorporated by reference from the information contained under the sections “Proposal No. 1 - Election of Four Class II Directors,” and “Corporate Governance” in our Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2021, to be filed with the Commission no later than 120 days after December 31, 2020, in accordance with General Instruction G(3) to the Form 10-K.
ITEM 11. EXECUTIVE COMPENSATION
The information required by this Item is incorporated herein by reference from information contained under the sections "Board Compensation" and "Executive Compensation" in our Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2021, to be filed with the Commission no later than 120 days after December 31, 2020, in accordance with General Instruction G(3) to the Form 10-K.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
The information required by this Item is incorporated herein by reference from information contained under the sections "Stock Ownership" and "Equity Compensation Plan Information" in our Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2021, to be filed with the Commission no later than 120 days after December 31, 2020, in accordance with General Instruction G(3) to the Form 10-K.
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
The information required by this Item is incorporated herein by reference from information contained under the sections "Director Independence" and "Related-Person Transactions" in our Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2021, to be filed with the Commission no later than 120 days after December 31, 2020, in accordance with General Instruction G(3) to the Form 10-K.
ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES
The information required by this Item is incorporated herein by reference from information contained under the section "Audit Committee Report" in our Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2021, to be filed with the Commission no later than 120 days after December 31, 2020, in accordance with General Instruction G(3) to the Form 10-K.
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PART IV
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a) The following documents are filed as a part of this Form 10-K:
(1) Consolidated Financial Statements
The Consolidated Financial Statements, the Notes to Consolidated Financial Statements, and the Reports of Independent Registered Public Accounting Firm for Boise Cascade Company are presented in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
- Consolidated Statements of Operations for the years ended December 31, 2020, 2019, and 2018.
- Consolidated Statements of Comprehensive Income for the years ended December 31, 2020, 2019, and 2018.
- Consolidated Balance Sheets as of December 31, 2020 and 2019.
- Consolidated Statements of Cash Flows for the years ended December 31, 2020, 2019, and 2018.
- Consolidated Statements of Stockholders' Equity for the years ended December 31, 2020, 2019, and 2018.
- Notes to Consolidated Financial Statements.
- Reports of Independent Registered Public Accounting Firm.
(2) Financial Statement Schedules
All financial statement schedules have been omitted because they are inapplicable, not required, or shown in the consolidated financial statements and notes in "Item 8. Financial Statements and Supplementary Data" of this Form 10-K.
(3) Exhibits
A list of the exhibits required to be filed as part of this report is set forth in the Index to Exhibits and is incorporated by reference.
(b) See Index to Exhibits
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BOISE CASCADE COMPANY
INDEX TO EXHIBITS

Exhibit Number | Exhibit Description | Incorporated by Reference | Filed or Furnished Herewith
Form | File Number | Exhibit Number | Filing Date
3.1 | Restated Certificate of Incorporation of Boise Cascade Company effective May 29, 2020 |  |  |  |  | X
3.2 | Amended and Restated Bylaws of Boise Cascade Company effective July 27, 2016 | 10-Q | 001-35805 | 3.2 | 7/28/2016 |
3.3 | Form of stock certificate of Boise Cascade Company | S-1/A Amend. No. 3 | 333-184964 | 4.3 | 1/23/2013 |
4.1 | Indenture dated July 27, 2020, by and among Boise Cascade Company, the guarantors party thereto and U.S. Bank National Association, as trustee, governing the 4.875% Senior Notes due 2030 | 10-Q | 001-35805 | 4.1 | 10/30/2020 |
4.2 | Form of 4.875% Senior Note due 2030 (included as Exhibit 1 to Appendix to Exhibit 4.1) | 10-Q | 001-35805 | 4.1 | 10/30/2020 |
4.3 | Form of 4.875% Senior Note Guarantee (included as Exhibit A to Exhibit 4.1) | 10-Q | 001-35805 | 4.1 | 10/30/2020 |
4.4 | Description of Registrant's Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 | 10-K | 001-35805 | 4.4 | 2/24/2020 |
10.1 | Amended and Restated Credit Agreement, dated May 15, 2015, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as the administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.1 | 7/29/2015 |
10.2 | First Amendment to Amended and Restated Credit Agreement, dated August 7, 2015, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as the administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 8-K | 001-35805 | 10.1 | 8/12/2015 |

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10.3 | Second Amendment to Amended and Restated Credit Agreement, dated February 11, 2016, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as the administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.1 | 5/3/2016 |
10.4 | Third Amendment to Amended and Restated Credit Agreement, dated June 30, 2016, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as the administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.2 | 7/28/2016 |
10.5 | Joinder and Revolver Increase Agreement Regarding Amended and Restated Credit Agreement, dated June 30, 2016, and is between ZB, N.A. DBA Zions First National Bank, Wells Fargo Capital Finance, LLC, as administrative agent for the Lenders, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.3 | 7/28/2016 |
10.6 | Fourth Amendment to Amended and Restated Credit Agreement, dated December 8, 2016, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as the administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 8-K | 001-35805 | 10.2 | 12/8/2016 |
10.7 | Fifth Amendment to Amended and Restated Credit Agreement, dated as of August 10, 2017, by and among Boise Cascade Company, the subsidiary borrowers party thereto, the subsidiary guarantors party thereto, Wells Fargo Capital Finance, LLC, as administrative agent, and the lenders party thereto | 8-K | 001-35805 | 10.1 | 8/11/2017 |
10.8 | Sixth Amendment to Amended and Restated Credit Agreement, dated March 13, 2020, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.1 | 5/7/2020 |

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10.9 | Seventh Amendment to Amended and Restated Credit Agreement, dated July 27, 2020, by and among the Lenders identified on the signature pages thereof, Wells Fargo Capital Finance, LLC, as administrative agent, Boise Cascade Company, and the other Borrowers identified on the signature pages thereof | 10-Q | 001-35805 | 10.1 | 10/30/2020 |
10.10 | Notes Purchase Agreement, dated as of August 16, 2016, by and among Boise Cascade Company, the guarantors party thereto, and Wells Fargo Securities, LLC, as representative of the several Initial Purchasers relating to the offer and sale of the 5.625% Senior Notes due 2024 | 10-Q | 001-35805 | 10.1 | 10/26/2016 |
10.11 | Term Loan Agreement, dated March 30, 2016, by and among Boise Cascade Company, Boise Cascade Building Materials Distribution, L.L.C., and Boise Cascade Wood Products, L.L.C., as borrowers, the lenders that are signatories hereto as the lenders, American AgCredit, PCA, as the Administrative Agent and sole lead arranger | 10-Q | 001-35805 | 10.2 | 5/3/2016 |
10.1 2 | First Amendment to Term Loan Agreement, dated December 8, 2016, by and among Boise Cascade Company, the subsidiary borrowers party thereto, the subsidiary guarantors party thereto, American AgCredit, PCA, as the administrative agent, and the lenders party thereto | 8-K | 001-35805 | 10.1 | 12/8/2016 |
10.1 3+ | Boise Cascade Company Supplemental Pension Plan, as amended through July 31, 2013 | S-4 | 333-191191 | 10.17 | 9/16/2013 |
10.1 4+ | Boise Cascade Company Supplemental Early Retirement Plan for Executive Officers, as amended through July 31, 2013 | S-4 | 333-191191 | 10.18 | 9/16/2013 |
10.1 5+ | Boise Cascade Company Supplemental Life Plan, as amended through July 31, 2013 | S-4 | 333-191191 | 10.19 | 9/16/2013 |
10.1 6+ | Pension Plan Group Annuity Contract, effective April 25, 2018 | 10-K | 001-35805 | 10.15 | 2/26/2019 |
10.1 7+ | Pension Plan Group Annuity Contract, effective August 10, 2018 | 10-K | 001-35805 | 10.16 | 2/26/2019 |
10.1 8+ | Boise Cascade Company Incentive and Performance Plan, as amended through July 31, 2013 | S-4 | 333-191191 | 10.21 | 9/16/2013 |
10.1 9+ | Boise Cascade Company 2004 Deferred Compensation Plan, as amended through October 30, 2013 | 10-Q | 001-35805 | 10.2 | 11/14/2013 |

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10.20+ | Boise Cascade Company 2004 Deferred Compensation Plan, as amended and restated as of January 1, 2018 | 10-K | 001-35805 | 10.18 | 2/26/2018 |
10.2 1+ | Boise Cascade Company 2019 Deferred Compensation Plan | 10-Q | 001-35805 | 10.1 | 8/6/2018 |
10.2 2+ | Boise Cascade Company Directors Deferred Compensation Plan, as amended through October 30, 2013 | 10-Q | 001-35805 | 10.1 | 11/14/2013 |
10.2 3+ | Boise Cascade Company 2019 CFO Leadership Recognition Agreement | 10-K | 001-35805 | 10.23 | 2/26/2019 |
10.2 4+ | Form of Indemnification Agreement for directors and executive officers | 8-K | 001-35805 | 10.4 | 2/13/2013 |
10.2 5+ | Boise Cascade Company 2013 Incentive Compensation Plan | 8-K | 001-35805 | 10.5 | 2/13/2013 |
10.2 6+ | 2016 Boise Cascade Omnibus Incentive Plan | 10-Q | 001-35805 | 10.1 | 7/28/2016 |
10.2 7+ | Form of Severance Agreement between Boise Cascade Company and executive officers | 8-K | 001-35805 | 10.1 | 8/30/2016 |
10.28+ | Form of 2018 Restricted Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.1 | 5/4/2018 |
10.29+ | Form of 2018 Performance Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.2 | 5/4/2018 |
10.30+ | 2019 CFO Restricted Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-K | 001-35805 | 10.35 | 2/26/2019 |
10.31+ | Form of 2019 Restricted Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.1 | 5/7/2019 |
10.32+ | Form of 2019 Performance Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.2 | 5/7/2019 |
10.33+ | Form of 20 20 Restricted Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.2 | 5/7/2020 |
10.34+ | Form of 20 20 Performance Stock Unit Agreement under the Boise Cascade Company 2016 Incentive Compensation Plan | 10-Q | 001-35805 | 10.3 | 5/7/2020 |
14.1 | Boise Cascade Company Code of Ethics | 8-K | 001-35805 | 14.1 | 2/26/2018 |

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21.1 | List of Subsidiaries of Boise Cascade Company |  |  |  |  | X
23.1 | Consent of KPMG LLP, Independent Registered Public Accounting Firm |  |  |  |  | X
31.1 | CEO Certification pursuant to Exchange Act Rule 13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |  |  |  |  | X
31.2 | CFO Certification pursuant to Exchange Act Rule 13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |  |  |  |  | X
32.1 | CEO Certification pursuant to 18 U.S.C Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |  |  |  |  | X
32.2 | CFO Certification pursuant to 18 U.S.C Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |  |  |  |  | X
101.INS | Inline XBRL Instance Document |  |  |  |  | X
101.SCH | Inline XBRL Taxonomy Extension Schema Document |  |  |  |  | X
101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase Document |  |  |  |  | X
101.DEF | Inline XBRL Taxonomy Definition Linkbase Document |  |  |  |  | X
101.LAB | Inline XBRL Taxonomy Extension Label Linkbase Document |  |  |  |  | X
101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase Document |  |  |  |  | X
104 | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) |  |  |  |  | X

+ Indicates exhibits that constitute management contracts or compensatory plans or arrangements.
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Table of Contents
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  | BOISE CASCADE COMPANY
|  | /s/ Nathan R. Jorgensen
|  | Nathan R. Jorgensen
|  | Chief Executive Officer

Date: February 22, 2021
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below on February 22, 2021, by the following persons on behalf of the registrant and in the capacities indicated.

| Signature |  | Capacity |
| Principal Executive Officer: |  |
| /s/ Nathan R. Jorgensen |  | Chief Executive Officer, Director
| Nathan R. Jorgensen |  |
| Principal Financial Officer: |  |
| /s/ Wayne M. Rancourt |  | Executive Vice President, Chief Financial Officer, and Treasurer
| Wayne M. Rancourt |  |
| Principal Accounting Officer: |  |
| /s/ Kelly E. Hibbs |  | Vice President and Controller
| Kelly E. Hibbs |  |
| Directors: |  |
| /s/ Thomas E. Carlile |  | /s/ Mack L. Hogans
| Thomas E. Carlile, Chairman |  | Mack L. Hogans
| /s/ Steven C. Cooper |  | /s/ Kristopher J. Matula
| Steven C. Cooper |  | Kristopher J. Matula
| /s/ Richard H. Fleming |  | /s/ Duane C. McDougall
| Richard H. Fleming |  | Duane C. McDougall
| /s/ Karen E. Gowland |  | /s/ Christopher J. McGowan
| Karen E. Gowland |  | Christopher J. McGowan
| /s/ David H. Hannah |  | /s/ Sue Y. Taylor
| David H. Hannah |  | Sue Y. Taylor

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