Mercer International (MERC) 10-K 17 Feb 22 2021 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Feb. 15, 2022	Jun. 30, 2021
Cover [Abstract]
Entity Registrant Name	MERCER INTERNATIONAL INC.
Entity Central Index Key	0001333274
Document Type	10-K
Document Period End Date	Dec. 31, 2021
Trading Symbol	MERC
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		66,037,552
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	000-51826
Entity Incorporation, State or Country Code	WA
Entity Tax Identification Number	47-0956945
Entity Address, Address Line One	Suite 1120
Entity Address, Address Line Two	700 West Pender Street
Entity Address, City or Town	Vancouver
Entity Address, State or Province	BC
Entity Address, Country	CA
Entity Address, Postal Zip Code	V6C 1G8
City Area Code	604
Local Phone Number	684-1099
Title of 12(b) Security	Common Stock, par value $1.00 per share
Security Exchange Name	NASDAQ
Document Annual Report	true
Document Transition Report	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Public Float			$ 805.9
ICFR Auditor Attestation Flag	true
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	271
Auditor Location	Vancouver, Canada
Documents Incorporated by Reference	Portions of the Registrant’s definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with its annual meeting of shareholders to be held in 2022 are incorporated by reference into Part III hereof.

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 1,803,255	$ 1,423,140	$ 1,624,411
Costs and expenses
Cost of sales, excluding depreciation and amortization	1,245,622	1,163,727	1,340,380
Cost of sales depreciation and amortization	132,117	128,817	125,801
Selling, general and administrative expenses	78,933	66,867	74,227
Operating income	346,583	63,729	84,003
Other income (expenses)
Interest expense	(70,047)	(80,746)	(75,750)
Loss on early extinguishment of debt	(30,368)	0	(4,750)
Other income	14,399	5,878	6,084
Total other expenses, net	(86,016)	(74,868)	(74,416)
Income (loss) before income taxes	260,567	(11,139)	9,587
Income tax provision	(89,579)	(6,096)	(19,226)
Net income (loss)	$ 170,988	$ (17,235)	$ (9,639)
Net income (loss) per common share
Basic	$ 2.59	$ (0.26)	$ (0.15)
Diluted	2.58	(0.26)	(0.15)
Dividends declared per common share	$ 0.2600	$ 0.3325	$ 0.5375

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 170,988	$ (17,235)	$ (9,639)
Other comprehensive income (loss)
Gain (loss) related to defined benefit pension plans	19,206	(8,530)	(1,582)
Income tax recovery (provision)	(4,485)	2,384	901
Gain (loss) related to defined benefit pension plans, net of tax	14,721	(6,146)	(681)
Foreign currency translation adjustment	(77,939)	95,131	12,291
Other comprehensive income (loss), net of taxes	(63,218)	88,985	11,610
Total comprehensive income	$ 107,770	$ 71,750	$ 1,971

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 345,610	$ 361,098
Accounts receivable, net	345,345	227,055
Inventories	356,731	271,696
Prepaid expenses and other	16,619	15,003
Total current assets	1,064,305	874,852
Property, plant and equipment, net	1,135,631	1,109,740
Investment in joint ventures	49,651	46,429
Amortizable intangible assets, net	47,902	51,571
Operating lease right-of-use assets	9,712	13,251
Pension asset	4,136
Other long-term assets	38,718	31,928
Deferred income tax	1,177	1,355
Total assets	2,351,232	2,129,126
Current liabilities
Accounts payable and other	282,307	210,994
Pension and other post-retirement benefit obligations	817	802
Total current liabilities	283,124	211,796
Long-term debt	1,237,545	1,186,623
Pension and other post-retirement benefit obligations	21,252	31,810
Operating lease liabilities	6,574	9,933
Other long-term liabilities	13,590	10,909
Deferred income tax	95,123	77,028
Total liabilities	1,657,208	1,528,099
Shareholders’ equity
Common shares $1 par value; 200,000,000 authorized; 66,037,000 issued and outstanding (2020 – 65,868,000)	65,988	65,800
Additional paid-in capital	347,902	345,696
Retained earnings	370,927	217,106
Accumulated other comprehensive loss	(90,793)	(27,575)
Total shareholders’ equity	694,024	601,027
Total liabilities and shareholders’ equity	2,351,232	2,129,126
Commitments and contingencies (Note 21)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	66,037,000	65,868,000
Common Stock, Shares, Outstanding	66,037,000	65,868,000
Common Stock, Par or Stated Value Per Share	$ 1	$ 1

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2018	$ 581,429	$ 65,171	$ 342,438	$ 301,990	$ (128,170)
Balance (in shares) at Dec. 31, 2018		65,202
Shares issued on grants of restricted shares		$ 31	(31)
Shares issued on grants of restricted shares (in shares)		31
Shares issued on grants of performance share units		$ 449	(449)
Shares issued on grants of performance share units (in shares)		449
Stock compensation expense	3,036		3,036
Net income (loss)	(9,639)			(9,639)
Dividends declared	(35,279)			(35,279)
Repurchase of common shares	(754)	$ (53)		(701)
Repurchase of common shares, shares		(53)
Other comprehensive income (loss)	11,610				11,610
Balance at Dec. 31, 2019	550,403	$ 65,598	344,994	256,371	(116,560)
Balance (in shares) at Dec. 31, 2019		65,629
Shares issued on grants of restricted shares		$ 31	(31)
Shares issued on grants of restricted shares (in shares)		68
Shares issued on grants of performance share units		$ 195	(195)
Shares issued on grants of performance share units (in shares)		195
Stock compensation expense	928		928
Net income (loss)	(17,235)			(17,235)
Dividends declared	(21,892)			(21,892)
Repurchase of common shares	(162)	$ (24)		(138)
Repurchase of common shares, shares		(24)
Other comprehensive income (loss)	88,985				88,985
Balance at Dec. 31, 2020	$ 601,027	$ 65,800	345,696	217,106	(27,575)
Balance (in shares) at Dec. 31, 2020	65,868	65,868
Shares issued on grants of restricted shares		$ 68	(68)
Shares issued on grants of restricted shares (in shares)		49
Shares issued on grants of performance share units		$ 120	(120)
Shares issued on grants of performance share units (in shares)		120
Stock compensation expense	$ 2,394		2,394
Net income (loss)	170,988			170,988
Dividends declared	(17,167)			(17,167)
Other comprehensive income (loss)	(63,218)				(63,218)
Balance at Dec. 31, 2021	$ 694,024	$ 65,988	$ 347,902	$ 370,927	$ (90,793)
Balance (in shares) at Dec. 31, 2021	66,037	66,037

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from (used in) operating activities
Net income (loss)	$ 170,988	$ (17,235)	$ (9,639)
Adjustments to reconcile net income (loss) to cash flows from operating activities
Depreciation and amortization	132,199	128,921	126,394
Deferred income tax provision (recovery)	18,791	(15,249)	(7,873)
Inventory impairment	0	25,998	9,200
Loss on early extinguishment of debt	30,368	0	4,750
Defined benefit pension plans and other post-retirement benefit plan expense	2,831	3,053	3,449
Stock compensation expense	2,394	928	3,036
Gain on sale of investments	0	(17,540)	0
Foreign exchange transaction losses (gains)	(16,597)	13,272	7,116
Other	384	543	5,834
Defined benefit pension plans and other post-retirement benefit plan contributions	(4,258)	(4,164)	(4,467)
Changes in working capital
Accounts receivable	(121,579)	(6,269)	41,369
Inventories	(96,442)	(11,430)	24,683
Accounts payable and accrued expenses	75,589	(53,744)	45,256
Other	(12,454)	(5,519)	(4,825)
Net cash from (used in) operating activities	182,214	41,565	244,283
Cash flows from (used in) investing activities
Purchase of property, plant and equipment	(159,440)	(78,518)	(132,034)
Acquisitions (Note 2)	(51,258)	0	(6,380)
Insurance proceeds	21,540	0	0
Purchase of amortizable intangible assets	(1,385)	(647)	(623)
Purchase of investments	0	(9,370)	0
Proceeds from sale of investments	0	26,910	0
Other	3,416	1,798	(321)
Net cash from (used in) investing activities	(187,127)	(59,827)	(139,358)
Cash flows from (used in) financing activities
Redemption of senior notes	(824,557)	0	(103,875)
Proceeds from issuance of senior notes	875,000	0	205,500
Proceeds from (repayment of) revolving credit facilities, net	(33,396)	52,651	(58,404)
Dividend payments	(17,167)	(21,892)	(35,279)
Payment of debt issuance costs	(14,483)	0	(4,213)
Proceeds from government grants	9,333	362	6,467
Repurchase of common shares	0	(162)	(754)
Other	(4,234)	(4,642)	(3,344)
Net cash from (used in) financing activities	(9,504)	26,317	6,098
Effect of exchange rate changes on cash and cash equivalents	(1,071)	1,958	(429)
Net increase (decrease) in cash and cash equivalents	(15,488)	10,013	110,594
Cash and cash equivalents, beginning of year	361,098	351,085	240,491
Cash and cash equivalents, end of year	345,610	361,098	351,085
Supplemental cash flow disclosure:
Cash paid for interest	73,088	78,151	59,707
Cash paid for income taxes	22,950	19,331	52,877
Supplemental schedule of non-cash investing and financing activities:
Leased production and other equipment	$ 29,344	$ 13,121	$ 8,739

The Company and Summary of Sign

The Company and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
The Company and Summary of Significant Accounting Policies	Note 1. The Company and Summary of Significant Accounting Policies Background Mercer International Inc. (“Mercer Inc.”) is a Washington corporation and its shares of common stock are quoted and listed for trading on the NASDAQ Global Select Market. Mercer Inc. owns and operates four pulp manufacturing facilities, two in Canada and two in Germany, has a 50% joint venture interest in a northern bleached softwood kraft (“NBSK”) pulp mill in Canada and owns and operates one sawmill in Germany. In August 2021, Mercer Inc. acquired a cross-laminated timber (“CLT”) facility located in Spokane Washington. In these consolidated financial statements, unless otherwise indicated, all amounts are expressed in U.S. dollars (“$”). The symbol “€” refers to euros and the symbol “C$” refers to Canadian dollars. Basis of Presentation These consolidated financial statements contained herein include the accounts of Mercer Inc. and all of its subsidiaries (collectively, the “Company”). The Company’s consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”). All significant intercompany balances and transactions have been eliminated upon consolidation. Mercer Inc. owns 100% of its subsidiaries with the exception of the 50% joint venture interest in the Cariboo Pulp & Paper Company (“CPP”) with West Fraser Mills Ltd., which is accounted for using the equity method. Use of Estimates Preparation of financial statements and related disclosures in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant management judgment is required in determining the accounting for, among other things, pension and other post-retirement benefit obligations, deferred income taxes (valuation allowance and permanent reinvestment), depreciation and amortization, future cash flows associated with impairment testing for long-lived assets, the allocation of the purchase price in a business combination to the assets acquired and liabilities assumed, legal liabilities and contingencies. Actual results could differ materially from these estimates, and changes in these estimates are recorded when known. Significant Accounting Policies Cash and Cash Equivalents Cash and cash equivalents include cash held in bank accounts and highly liquid investments with original maturities of three months or less. Investments Investments in equity securities in which the Company does not exercise significant influence are measured at fair value through earnings. These securities are reported at fair values, based upon quoted market prices, with the unrealized and realized gains or losses included in “Other income” in the Consolidated Statements of Operations. Note 1. The Company and Summary of Significant Accounting Policies (continued) Accounts Receivable Accounts receivable are recorded at cost, net of an allowance for doubtful accounts. The Company reviews the collectability of accounts receivable at each reporting date and maintains an allowance for doubtful accounts at an amount estimated to cover the expected losses on uninsured accounts receivable. Any amounts that are determined to be uncollectible and uninsured are offset against the allowance. The allowance is based on the Company’s evaluation of numerous factors, including the payment history, financial position of the debtors and current market conditions. The Company’s credit risk associated with its sales is currently managed through the purchase of credit insurance, obtaining letters of credit and setting credit limits prior to the sale. The Company reviews new customers' credit history before granting credit and conducts regular reviews of existing customers' credit. Inventories Inventories of raw materials, finished goods and work in progress are valued at the lower of cost, using the weighted-average cost method, or net realizable value and are released from inventory on the same basis. Spare parts and other materials are valued at the lower of cost and replacement cost. Cost includes labor, materials and production overhead and is determined by using the weighted average cost method. Raw materials inventories include pulp logs, sawlogs and wood chips. These inventories are located both at the mills and at various offsite locations. In accordance with industry practice, physical inventory counts utilize standardized techniques to estimate quantities of pulp logs, sawlogs and wood chip inventory volumes. These techniques historically have provided reasonable estimates of such inventories. Property, Plant and Equipment Property, plant and equipment is stated at cost less accumulated depreciation. Depreciation of buildings and production equipment is based on the estimated useful lives of the assets and is computed using the straight-line method. The amortization periods have been provided in the Property, Plant and Equipment, Net Note. The costs of major rebuilds, replacements and those expenditures that substantially increase the useful lives of existing property, plant and equipment are capitalized. The Company capitalizes interest on borrowings during the construction period of major capital projects as part of the related asset. The cost of repairs and maintenance as well as planned shutdown maintenance performed on manufacturing facilities, composed of labor, materials and other incremental costs, is recognized as an expense in the Consolidated Statements of Operations as incurred. The Company provides for asset retirement obligations when there is a legislated or contractual basis for those obligations. An obligation is recorded as a liability at fair value in the period in which the Company incurs a legal obligation associated with the retirement of an asset. The associated costs are capitalized as part of the carrying value of the related asset and amortized over its remaining useful life. The liability is accreted using a credit adjusted risk-free interest rate. Note 1. The Company and Summary of Significant Accounting Policies (continued) Impairment of Long-Lived Assets Long-lived assets include property, plant and equipment, net and amortizable intangible assets, net. The unit of accounting for impairment testing for long-lived assets is its “Asset Group”, which includes property, plant and equipment, net, amortizable intangible assets, net and liabilities directly related to those assets. The Company evaluates an Asset Group for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable, such as continuing operating losses. When an indicator that the carrying value of an Asset Group may not be recoverable is triggered, the Company compares the carrying value of the Asset Group to its forecasted undiscounted future cash flows. If the carrying value of the Asset Group is greater than the undiscounted future cash flows an impairment charge is recorded based on the excess of the Asset Group’s carrying value over its fair value. Leases The Company determines if a contract contains a lease at inception. Leases are classified as either operating or finance leases. Leases with a term of less than 12 months are not recorded in the Consolidated Balance Sheets, and are expensed over the term of the lease in the Consolidated Statements of Operations. Operating and finance lease right-of-use assets and the related liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the term of the lease. Renewal and termination options are included in the lease terms when it is reasonably certain that they will be exercised. In determining the present value of lease payments, the Company uses the implicit rate when readily determinable, or the Company’s estimated incremental borrowing rate, which is based on information available at the lease commencement date. Lease payments are expensed in the Consolidated Statements of Operations on a straight-line basis over the term of the lease. Government Grants The Company records grants from federal, provincial and state governments when the conditions of their receipt are complied with and there is reasonable assurance that the grants will be received. Grants related to assets are government grants whose primary condition is that the company qualifying for them should purchase, construct or otherwise acquire long-term assets. Secondary conditions may also be attached, including restricting the type or location of the assets and/or other conditions that must be met. Grants related to assets are deducted from the cost of the assets in the Consolidated Balance Sheets and amortized over the same period as the related asset in “Cost of sales depreciation and amortization” in the Consolidated Statements of Operations. Grants related to income are government grants which are either unconditional, related to reduced environmental emissions or related to the Company’s normal business operations, and are reported as a reduction of related expenses in the Consolidated Statements of Operations. The Company is required to pay certain fees based on wastewater emissions at its German mills. Accrued fees can be reduced upon the mills’ demonstration of reduced wastewater emissions. The fees are expensed as incurred and the fee reduction is recognized once the Company has reasonable assurance that the German regulators will accept the reduced level of wastewater emissions. Both the fees and the fee reduction are recorded to “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. There may be a significant period of time between recognition of the wastewater expense and recognition of the wastewater fee reduction. Note 1. The Company and Summary of Significant Accounting Policies (continued) Amortizable Intangible Assets Amortizable intangible assets are stated at cost less accumulated amortization. Amortization is provided on a straight-line basis over the estimated useful lives of the assets. The amortization periods have been provided in the Amortizable Intangible Assets, Net Note. Sandalwood Tree Plantations Sandalwood tree plantations are measured at the lower of cost, which includes both the direct and indirect costs of growing and harvesting the sandalwood trees, and net realizable value. The cost of the sandalwood plantations is recorded in “Other long-term assets” and the cost of the harvested sandalwood is recorded in “Inventories” in the Consolidated Balance Sheets. The sandalwood tree plantations are carried at historical cost and are evaluated for impairment whenever events or changes in circumstances indicate the carrying value may be higher than the net realizable value, such as a sustained drop in sales price. Pension Plans The Company maintains defined benefit pension plans for its Peace River employees and its salaried employees at the Celgar mill which are funded and non-contributory. The cost of the benefits earned by the employees is determined using the projected unit credit benefit method prorated on years of service. The pension expense reflects the current service cost, the interest on the unfunded liability and the amortization over the estimated average remaining service life of the employees of: (i) prior service costs, and (ii) the net actuarial gain or loss that exceeds 10% of the greater of the accrued benefit obligation and the fair value of plan assets as of the beginning of the year. The Company recognizes the net funded status of the plan. The Company also has a multiemployer pension plan and defined contribution plans for which contributions are expensed in the Consolidated Statements of Operations. Foreign Operations and Currency Translation The Company determines its foreign subsidiaries’ functional currency by reviewing the currency of the primary economic environment in which the foreign subsidiaries operate, which is normally the currency of the environment in which the foreign subsidiaries generate and expend cash. The Company translates assets and liabilities of its non-U.S. dollar functional currency subsidiaries into U.S. dollars using the rate in effect at the balance sheet date and revenues and expenses are translated at the average rate of exchange throughout the period. Foreign currency translation gains and losses are recognized within “Accumulated other comprehensive loss” in the Consolidated Balance Sheets. Transactions in foreign currencies are translated to the respective functional currencies of each operation using exchange rates at the dates of the transactions. Monetary assets and liabilities denominated in foreign currencies at the reporting date are translated to the functional currency using the exchange rate at that date. Non-monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using historical exchange rates. Gains and losses resulting from foreign currency transactions related to operating activities are included in “Cost of sales, excluding depreciation and amortization” while those related to non-operating activities are included in “Other income” in the Consolidated Statements of Operations. Where intercompany loans are of a long-term investment nature, exchange rate changes are included as a foreign currency translation adjustment within “Accumulated other comprehensive loss” in the Consolidated Balance Sheets. Note 1. The Company and Summary of Significant Accounting Policies (continued) Revenue Recognition The Company recognizes revenue when obligations under the terms of a contract with its customer are satisfied; generally this occurs with the transfer of control of the products sold. Transfer of control to the customer is based on the standardized shipping terms in the contract as this determines when the Company has the right to payment, the customer has legal title to the asset and the customer has the risks of ownership. Payment is due, and a receivable is recognized after control has transferred to the customer and revenue is recognized. Payment terms are defined in the contract as typically due within three months after control has transferred to the customer, and as such, the contracts do not have a significant financing component. The Company has elected to exclude value added, sales and other taxes it collects concurrent with revenue-producing activities from revenues. The Company may arrange shipping and handling activities as part of the sale of its products. The Company has elected to account for shipping and handling activities that occur after the customer has obtained control of the product as a fulfillment cost rather than as an additional promised service. The following is a description of the principal activities from which the Company generates its revenues. For a breakdown of revenues by product and geographic location see the Segment Information Note. Pulp and Lumber Revenues For European sales sent by truck or train from the mills directly to the customer, the contracted sales terms are such that control transfers once the truck or train leaves the mill. For orders sent by ocean freighter, the contract terms state that control transfers at the time the product passes the ship’s rail. For North American sales shipped by truck or train, the contracts state that control transfers once the truck or train has arrived at the customer’s specified location. The transaction price is included in the sales contract and is net of customer discounts, rebates and other selling concessions. The Company’s pulp sales are to tissue and paper producers and the Company’s lumber sales are to manufacturers and retailers. The Company’s sales in Europe and North America are direct to the customer. The Company’s pulp sales to overseas customers are primarily through third party sales agents and the Company’s lumber sales to overseas customers are either direct to the customer or through third party sales agents. The Company is the principal in all of the arrangements with third party sales agents. By-Product Revenues Energy sales are to utility companies in Canada and Germany. Sales of energy are recognized as the electricity is consumed by the customer and is based on contractual usage rates and meter readings that measure electricity consumption. Chemicals and wood residuals from the German mills are sold into the European market direct to the customer and have shipping terms where control transfers once the chemicals or wood residuals are loaded onto the truck at the mill. Shipping and Handling Costs Amounts charged to customers for shipping and handling costs are recognized in “Revenues” in the Consolidated Statements of Operations. Shipping and handling costs incurred by the Company are included in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations at the time the related revenue is recognized. Note 1. The Company and Summary of Significant Accounting Policies (continued) Insurance Claims The Company records business interruption insurance proceeds once the insurance provider acknowledges that the claim is covered and agrees in writing to the amount to be paid for the claim. The Company reports business interruption insurance proceeds in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. The Company records insurance proceeds related to property up to the amount of the related impairment when it is probable they will be received. Proceeds in excess of the impairment are recorded once the insurance provider acknowledges that the claim is covered and agrees in writing to the amount to be paid for the claim. The Company reports property insurance proceeds in the same line item in which the related impairment was recognized in the Consolidated Statements of Operations. Stock-Based Compensation The Company recognizes stock-based compensation expense over an award’s requisite service period based on the award’s fair value in “Selling, general, and administrative expenses” in the Consolidated Statements of Operations. The Company issues new shares upon the exercise of stock-based compensation awards. For performance share units (“PSUs”) which have the same grant and service inception date, the fair value is based upon the targeted number of shares to be awarded and the quoted market price of the Company’s shares at that date. For PSUs where the service inception date precedes the grant date, the fair value is based upon the targeted number of shares awarded and the quoted price of the Company’s shares at each reporting date up to the grant date. The target number of shares is determined using management’s best estimate. The final determination of the number of shares to be granted is made by the Company’s board of directors. The Company estimates forfeitures of PSUs based on management’s expectations and recognizes compensation cost only for those awards expected to vest. Estimated forfeitures are adjusted to actual experience at each balance sheet date. The fair value of restricted shares is determined based upon the number of shares granted and the quoted price of the Company’s shares on the date of grant. Deferred Income Taxes Deferred income taxes are recognized using the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and operating loss and tax credit carryforwards. Valuation allowances are provided if, after considering both positive and negative available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. Deferred income taxes are determined separately for each tax-paying component of the Company. For each tax-paying component, all deferred tax liabilities and assets are offset and presented as a single net amount. Derivative Financial Instruments The Company occasionally enters into derivative financial instruments to manage certain market risks. These derivative instruments are not designated as hedging instruments and accordingly, are recorded at fair value in the Consolidated Balance Sheets with the changes in fair value recognized in “Other income” in the Consolidated Statements of Operations. Periodically, the Company enters into derivative contracts to supply materials for its own use and as such are exempt from mark-to-market accounting. Note 1. The Company and Summary of Significant Accounting Policies (continued) Fair Value Measurements The fair value methodologies and, as a result, the fair value of the Company’s financial instruments are determined based on the fair value hierarchy provided in the Fair Value Measurements and Disclosures topic of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification, and are as follows: Level 1 – Valuations based on quoted prices in active markets for identical assets and liabilities. Level 2 – Valuations based on observable inputs in active markets for similar assets and liabilities, other than Level 1 prices, such as quoted commodity prices or interest or currency exchange rates. Level 3 – Valuations based on significant unobservable inputs that are supported by little or no market activity, such as discounted cash flow methodologies based on internal cash flow forecasts. The financial instrument’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Net Income (Loss) Per Common Share Basic net income (loss) per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding in the period. Diluted net income (loss) per common share is calculated to give effect to all potentially dilutive common shares outstanding by applying the “Treasury Stock” and “If-Converted” methods. Instruments that could have a potentially dilutive effect on the Company’s weighted average shares outstanding include all or a portion of outstanding stock options, restricted shares, restricted share units, performance shares and PSUs. Business Combinations The Company uses the acquisition method in accounting for a business combination that meets the definition of a business. Under this approach, identifiable assets acquired and liabilities assumed are recorded at their respective fair market values at the date of acquisition. In developing estimates of fair market values for long-lived assets, including identifiable intangible assets, the Company utilizes a variety of inputs including forecasted cash flows, discount rates, estimated replacement costs and depreciation and obsolescence factors. Valuations are performed by management or independent valuation specialists under management’s supervision, where appropriate. Acquisition costs, as well as costs to integrate acquired companies, are expensed as incurred in the Consolidated Statements of Operations. Note 1. The Company and Summary of Significant Accounting Policies (continued) Impact of the COVID-19 Pandemic The Company is subject to risks and uncertainties as a result of the COVID-19 pandemic. During the pandemic, there have been several “waves” or periods during which there has been a significant widespread increase in reported infections and the emergence and rapid spread of new variants of the COVID-19 virus. In response to such waves, various countries have from time to time re-imposed various restrictions on social, business, travel and other activities. Such economic disruption could have a material adverse effect on the Company’s business. As of the date of issuance of these consolidated financial statements, the Company has not had significant downtime or closures at its mills or disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic, but the extent to which the COVID-19 pandemic may materially impact the Company's future financial condition, liquidity, or results of operations remains uncertain. The Company’s future results of operations and liquidity, however, could be adversely impacted by economic factors arising from the pandemic that affect our business and customers. For instance, we may experience delays in payments of outstanding receivable amounts beyond normal payment terms, supply chain disruptions and uncertain demand, and the impact of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by its customers. New Accounting Pronouncements Accounting Pronouncements Adopted Government Assistance - Disclosures by Business Entities about Government Assistance In November 2021, the FASB issued Accounting Standards Update (“ASU”) 2021-10 Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance. The amendments in this update require disclosures about transactions with a government that have been accounted for by analogizing to a grant or contribution accounting model to increase transparency about (1) the nature of the transactions, (2) the accounting for the transactions, (3) the line items affected by the transactions in an entity’s financial statements, and (4) the significant terms and conditions of the transactions. This update is effective for annual financial statements issued for fiscal years beginning after December 15, 2021, with early adoption permitted. The disclosure required by the update has been included in the Government Grants accounting policy, the Property, Plant and Equipment, Net Note and the Accounts Payable and Other Note. Business Combinations - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In October 2021, the FASB issued ASU 2021-08 Business Combinations (Topic 805) - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which address diversity and inconsistency related to the recognition and measurement of contract assets and contract liabilities acquired in a business combination. The amendments in this update require that an acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Acquisitions	Note 2. Acquisitions 2021 Asset Acquisition Mercer Mass Timber On August 5, 2021, the Company acquired a CLT facility in Spokane Washington for $51,258 cash, including $1,258 of acquisition costs. The acquired facility is called Mercer Mass Timber LLC (“MMT”). The transaction is accounted for as an acquisition of a group of assets as management determined it does not qualify as an acquisition of a business under GAAP. Substantially all of the fair value of the gross assets acquired was concentrated in a group of similar identifiable assets, being the land, building and production equipment acquired. 2019 Acquisition Mercer Forestry Services On October 31, 2019, the Company acquired a log harvesting, road building and trucking services business for $6,938 cash. The acquired business is called Mercer Forestry Services Ltd. (“MFS”). Significantly all of the purchase price was allocated to the fair value of logging equipment. MFS qualified as a business under GAAP and accordingly, the Company began consolidating its results of operations, financial position and cash flows in the consolidated financial statements as of the acquisition date. In the year ended December 31, 2019, $265 of acquisition related costs were recognized in “Selling, general and administrative expenses” in the Consolidated Statements of Operations. Pro forma information related to the acquisition of MFS has not been provided as it does not have a material effect on the Company’s Consolidated Statements of Operations.

Business Interruption Insurance

Business Interruption Insurance	12 Months Ended
	Dec. 31, 2020
Extraordinary And Unusual Items [Abstract]
Business Interruption Insurance	Note 3. Business Interruption Insurance In 2021, the Company replaced the lower furnace of a boiler at the Peace River mill as a result of an incident that occurred in 2017. In 2021, the Company received written confirmation from the insurance provider that the business interruption insurance claim related to the boiler repair is covered and the amount of the settlement is C$43.0 million ($34,303). As of December 31, 2021, C$40.0 million ($31,551) of this payment was receivable. The business interruption insurance proceeds have been recorded in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. Subsequent to year end, the insurance claim receivable was settled in full.

Other Income

Other Income	12 Months Ended
	Dec. 31, 2020
Other Income And Expenses [Abstract]
Other Income	Note 4. Other Income Other income for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: For the Year Ended December 31, 2021 2020 2019 Foreign exchange gain (loss) $ 12,674 $ (13,797 ) $ 1,080 Gain on sale of investments (a) — 17,540 — Other 1,725 2,135 5,004 Other income $ 14,399 $ 5,878 $ 6,084 (a) In 2020, the Company purchased certain equity security investments for $9,370 and sold them for $26,910 which resulted in a realized gain of $17,540. These investments were Level 1 investments and were held at fair value with gains and losses included in earnings. As of December 31, 2021 and December 31, 2020, the Company held no such investments.

Accounts Receivable, Net

Accounts Receivable, Net	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Accounts Receivable, Net	Note 5. Accounts Receivable, Net Accounts receivable, net as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, 2021 2020 Trade, net of allowance of $845 (2020 — $552) $ 293,498 $ 210,963 Insurance claims (a) 37,953 — Other 13,894 16,092 $ 345,345 $ 227,055 (a) Insurance claims receivable are for the final settlement of the 2021 Peace River boiler claims and include the remaining business interruption claim of C$40.0 million ($31,551) and the remaining property claim of C$8.1 million ($6,402). Subsequent to year end, the insurance claims receivable were settled in full.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Net [Abstract]
Inventories	Note 6. Inventories Inventories as of December 31, 2021 and December 31, 2020, were comprised of the following: December 31, 2021 2020 Raw materials $ 106,434 $ 74,526 Finished goods 140,829 88,256 Spare parts and other 109,468 108,914 $ 356,731 $ 271,696 In 2021, the Company did not have any inventory impairment charges.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2021
Property Plant And Equipment [Abstract]
Property, Plant and Equipment, Net	Note 7. Property, Plant and Equipment, Net Property, plant and equipment, net as of December 31, 2021 and December 31, 2020, was comprised of the following: Estimated Useful Lives December 31, (Years) 2021 2020 Land $ 61,067 $ 63,610 Buildings 10 - 50 309,039 290,150 Production and other equipment 5 - 25 2,079,801 2,037,050 2,449,907 2,390,810 Less: accumulated depreciation (1,314,276 ) (1,281,070 ) $ 1,135,631 $ 1,109,740 In 2021, the Company received proceeds from an insurer of $21,540 related to the property damage claim for the replacement of the lower furnace of a boiler at the Peace River mill. In 2021, the Company received government grants of $9,333 to partially finance innovation and greenhouse gas reduction projects at the Canadian mills. These grants were netted against “Property, plant and equipment, net” in the Consolidated Balance Sheets. As of December 31, 2021, property, plant and equipment was net of $164,439 of unamortized government grants (2020 – $186,330). Amortization expense related to government grants for the year ended December 31, 2021 was $19,855 (2020 – $18,369; 2019 – $19,084). The Company maintains industrial landfills on its premises for the disposal of waste, primarily from the mills’ pulp processing activities. The mills have obligations under their landfill permits to decommission these disposal facilities pursuant to certain regulations. As of December 31, 2021, the Company had recorded $12,529 (2020 – $10,005) of asset retirement obligations in “Other long-term liabilities” in the Consolidated Balance Sheets.

Amortizable Intangible Assets,

Amortizable Intangible Assets, Net	12 Months Ended
	Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Amortizable Intangible Assets, Net	Note 8. Amortizable Intangible Assets, Net Amortizable intangible assets, net as of December 31, 2021 and December 31, 2020, were comprised of the following: Estimated December 31, 2021 December 31, 2020 Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Energy sales agreement 11 $ 17,047 $ (7,327 ) $ 9,720 $ 18,470 $ (6,253 ) $ 12,217 Timber cutting rights 30 39,714 (4,051 ) 35,663 39,546 (2,714 ) 36,832 Software and other intangible assets 5 27,376 (24,857 ) 2,519 27,851 (25,329 ) 2,522 $ 84,137 $ (36,235 ) $ 47,902 $ 85,867 $ (34,296 ) $ 51,571 Amortization expense related to intangible assets for the year ended December 31, 2021 was $4,767 (2020 – $4,414; 2019 – $5,930). Amortization expense for the next five years related to intangible assets as of December 31, 2021 is expected to be as follows: 2022 2023 2024 2025 2026 Amortization expense $ 3,934 $ 3,563 $ 3,324 $ 3,076 $ 2,933

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Other Long-Term Assets	Note 9. Other Long-Term Assets Other long-term assets as of December 31, 2021 and December 31, 2020, were comprised of the following: December 31, 2021 2020 Sandalwood tree plantations $ 30,731 $ 28,600 Other 7,987 3,328 $ 38,718 $ 31,928

Accounts Payable and Other

Accounts Payable and Other	12 Months Ended
	Dec. 31, 2021
Payables And Accruals [Abstract]
Accounts Payable and Other	Note 10. Accounts Payable and Other Accounts payable and other as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, 2021 2020 Trade payables $ 58,451 $ 42,730 Accrued expenses 76,409 60,622 Interest payable 26,506 33,241 Income tax payable 56,241 23,256 Payroll-related accruals 20,707 18,993 Wastewater fee (a) 19,248 13,407 Finance lease liability 8,467 5,364 Operating lease liability 3,192 3,318 Government grants (b) 7,302 7,161 Other 5,784 2,902 $ 282,307 $ 210,994 (a) The Company is required to pay certain fees based on wastewater emissions at its German mills. Accrued fees can be reduced upon the mills’ demonstration of reduced wastewater emissions. Reductions to the wastewater fees for the year ended December 31, 2021 were $nil (2020 – $nil; 2019 – $20,859). (b) The Canadian mills have a liability for unspent government grants which are required to be used to partially finance greenhouse gas emission reduction and innovation capital projects. The grants are recorded in “Cash and cash equivalents” in the Consolidated Balance Sheets, however, they are considered to be restricted as they are repayable if the mills do not spend the funds on approved projects .

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Debt	Note 11. Debt Debt as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, Maturity 2021 2020 Senior notes (a) 5.500% senior notes 2026 $ 300,000 $ 300,000 5.125% senior notes 2029 875,000 — 6.500% senior notes 2024 — 250,000 7.375% senior notes 2025 — 550,000 Credit arrangements €200 million joint revolving credit facility (b) 2023 — — C$60 million revolving credit facility (c), (d) 2024 22,874 21,992 C$60 million revolving credit facility (c), (e) 2023 — 32,988 €2.6 million demand loan (f) — — Finance lease liability 64,041 46,693 1,261,915 1,201,673 Less: unamortized premium and issuance costs, net (15,903 ) (9,686 ) Less: finance lease liability due within one year (8,467 ) (5,364 ) $ 1,237,545 $ 1,186,623 The maturities of the principal portion of debt as of December 31, 2021 were as follows: Senior Notes and Credit Arrangements Finance Leases 2022 $ — $ 9,861 2023 — 9,620 2024 22,874 8,787 2025 — 7,943 2026 300,000 7,489 Thereafter 875,000 27,161 1,197,874 70,861 Less imputed interest — (6,820 ) Total payments $ 1,197,874 $ 64,041 Certain of the Company’s debt instruments were issued under agreements which, among other things, may limit its ability and the ability of its subsidiaries to make certain payments, including dividends. These limitations are subject to specific exceptions. As of December 31, 2021, the Company was in compliance with the terms of its debt agreements. (a) In January 2021, the Company issued $875,000 in aggregate principal amount of 5.125% senior notes which mature on February 1, 2029 (the “2029 Senior Notes”). The net proceeds from the 2029 Senior Notes issuance were $860,517 after deducting the underwriter’s discount and offering expenses. The net proceeds were used to redeem the outstanding senior notes which were to mature in 2024 and 2025 and for general corporate purposes. In connection with the redemption, the Company recorded a loss on early extinguishment of debt of $30,368 in the Consolidated Statements of Operations. Note 11. Debt (continued) The 2029 Senior Notes and the senior notes which mature on January 15, 2026 (the “2026 Senior Notes” and collectively with the 2029 Senior Notes, the “Senior Notes”) are general unsecured senior obligations of the Company. The Company may redeem all or a part of the Senior Notes, upon not less than 10 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date. The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes: 2026 Senior Notes 2029 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage January 15, 2021 102.750% February 1, 2024 102.563% January 15, 2022 101.375% February 1, 2025 101.281% January 15, 2023 and thereafter 100.000% February 1, 2026 and thereafter 100.000% (b) A €200.0 million joint revolving credit facility with all of the Company’s German mills that matures in December 2023. Borrowings under the facility are unsecured and bear interest at Euribor plus a variable margin ranging from 1.05% to 2.00% dependent on conditions including but not limited to a prescribed leverage ratio. As of December 31, 2021, approximately €10.5 million ($11,906) of this facility was supporting bank guarantees and approximately €189.5 million ($214,614) was available. (c) In January 2022, the Company entered into a new C$160.0 million joint revolving credit facility for the Celgar mill, Peace River mill and MFS. The new facility has a five year term and replaces the C$60.0 million revolving credit facility for the Peace River mill and the C$60.0 million revolving credit facility for the Celgar mill. The facility is available by way of: (i) Canadian denominated advances, which bear interest at a designated prime rate per annum; (ii) banker’s acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker’s acceptance plus 1.20% to 1.45% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, an Adjusted Term SOFR for a one month tenor plus 1.00% and the bank’s applicable reference rate for U.S. dollar loans; and (iv) dollar SOFR advances, which bear interest at Adjusted Term SOFR plus 1.20% to 1.45% per annum. (d) A C$60.0 million revolving credit facility for Peace River. The facility was available by way of: (i) Canadian dollar denominated advances, which bear interest at a designated prime rate per annum; (ii) banker’s acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker’s acceptance plus 1.25% to 1.50% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, a designated LIBOR rate plus 1.00% and the bank’s applicable reference rate for U.S. dollar loans; and (iv) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.50% per annum. Borrowings under the facility were collateralized by, among other things, the mill’s inventories and accounts receivable. As of December 31, 2021, approximately C$29.0 million ($22,874) of this facility was drawn and accruing interest at a rate of 2.45%, approximately C$0.9 million ($722) was supporting letters of credit and approximately C$30.1 million ($23,730) was available. (e) A C$60.0 million revolving credit facility for Celgar. Borrowings under the facility were collateralized by the mill's inventories, accounts receivable, general intangibles and capital assets and were restricted by a borrowing base calculated on the mill's inventories and accounts receivable. The facility was available by way of: (i) Canadian and U.S. dollar denominated advances, which bear interest at a designated prime rate less 0.125% to plus 0.125% per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.625% per annum; and (iii) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.625% per annum. As of December 31, 2021, approximately C$0.5 million ($356) was supporting letters of credit and approximately C$59.5 million ($46,970) was available. Note 11. Debt (continued) (f) A €2.6 million demand loan for Rosenthal that does not have a maturity date. Borrowings under this facility are unsecured and bear interest at the rate of the three-month Euribor plus 2.50%. As of December 31, 2021, approximately €2.6 million ($2,890) of this facility was supporting bank guarantees and approximately $nil was available.

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefit Obligations	12 Months Ended
	Dec. 31, 2021
Compensation And Retirement Disclosure [Abstract]
Pension and Other Post-Retirement Benefit Obligations	Note 12. Pension and Other Post-Retirement Benefit Obligations Defined Benefit Plans Pension benefits are based on employees’ earnings and years of service. The defined benefit plans are funded by contributions from the Company based on actuarial estimates and statutory requirements. Information about the Celgar and Peace River defined benefit plans, in aggregate for the year ended December 31, 2021 was as follows: 2021 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2020 $ 128,854 $ 14,234 $ 143,088 Service cost 3,942 303 4,245 Interest cost 3,524 391 3,915 Benefit payments, net (4,231 ) (531 ) (4,762 ) Actuarial gains (6,701 ) (1,130 ) (7,831 ) Foreign currency exchange rate changes 587 72 659 Benefit obligation, December 31, 2021 125,975 13,339 139,314 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2020 110,476 — 110,476 Actual returns 9,315 — 9,315 Contributions 4,258 — 4,258 Benefit payments (4,098 ) — (4,098 ) Foreign currency exchange rate changes 1,430 — 1,430 Fair value of plan assets, December 31, 2021 121,381 — 121,381 Funded status, December 31, 2021 $ (4,594 ) $ (13,339 ) $ (17,933 ) Components of the net benefit cost recognized Service cost $ 3,942 $ 303 $ 4,245 Interest cost 3,524 391 3,915 Expected return on plan assets (5,216 ) — (5,216 ) Amortization of unrecognized items 678 (791 ) (113 ) Net benefit cost $ 2,928 $ (97 ) $ 2,831 Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) Information about the Celgar and Peace River defined benefit plans, in aggregate for the year ended December 31, 2020 was as follows: 2020 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2019 $ 112,996 $ 13,252 $ 126,248 Service cost 3,404 258 3,662 Interest cost 3,367 385 3,752 Benefit payments (4,346 ) (479 ) (4,825 ) Actuarial losses 10,469 514 10,983 Foreign currency exchange rate changes 2,964 304 3,268 Benefit obligation, December 31, 2020 128,854 14,234 143,088 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2019 99,991 — 99,991 Actual returns 8,704 — 8,704 Contributions 3,685 479 4,164 Benefit payments (4,346 ) (479 ) (4,825 ) Foreign currency exchange rate changes 2,442 — 2,442 Fair value of plan assets, December 31, 2020 110,476 — 110,476 Funded status, December 31, 2020 $ (18,378 ) $ (14,234 ) $ (32,612 ) Components of the net benefit cost recognized Service cost $ 3,404 $ 258 $ 3,662 Interest cost 3,367 385 3,752 Expected return on plan assets (4,329 ) — (4,329 ) Amortization of unrecognized items 860 (892 ) (32 ) Net benefit cost $ 3,302 $ (249 ) $ 3,053 The components of the net benefit cost other than service cost are recorded in “Other income” in the Consolidated Statements of Operations. The amortization of unrecognized items relates to net actuarial losses (gains) and prior service costs. The Company anticipates that it will make contributions to the defined benefit plans of approximately $4,034 in 2022. Estimated future benefit p ayments Pension Other Post-Retirement Benefits 2022 $ 4,985 $ 577 2023 $ 5,145 $ 603 2024 $ 5,389 $ 629 2025 $ 5,668 $ 652 2026 $ 5,882 $ 675 2027-2031 $ 31,931 $ 3,730 Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) Weighted Average Assumptions The weighted-average assumptions used to determine the benefit obligations at the measurement dates and the net benefit costs for the years ended December 31, 2021, 2020 and 2019 were as follows for Celgar’s defined benefit plan: December 31, 2021 2020 2019 Benefit obligations Discount rate 3.10 % 2.55 % 3.00 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Net benefit cost for year ended Discount rate 2.70 % 3.00 % 3.14 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Expected rate of return on plan assets 4.00 % 4.10 % 3.90 % The weighted-average assumptions used to determine the benefit obligations at the measurement dates and the net benefit costs for the years ended December 31, 2021, 2020 and 2019 were as follows for Peace River’s defined benefit plan: December 31, 2021 2020 2019 Benefit obligations Discount rate 3.10 % 2.70 % 3.20 % Rate of compensation increase 2.75 % 2.75 % 2.75 % Net benefit cost for year ended Discount rate 2.70 % 3.20 % 3.90 % Rate of compensation increase 2.75 % 2.75 % 2.75 % Expected rate of return on plan assets 4.93 % 4.68 % 5.12 % The discount rate assumption is adjusted annually to reflect the rates available on high-quality debt instruments, with a duration that is expected to match the timing and amount of expected pension and other post-retirement benefit payments. High-quality debt instruments are corporate bonds with a rating of “AA” or better. The expected rate of return on plan assets is a management estimate based on, among other factors, historical long-term returns, expected asset mix and an active management premium. The expected rate of compensation increase is a management estimate based on, among other factors, historical compensation increases and promotions, while considering current industry conditions, the terms of collective bargaining agreements with employees and the outlook for the industry. The assumed health care cost trend rates used to determine the other post-retirement benefit obligations as of December 31, 2021 and December 31, 2020 were as follows: December 31, 2021 2020 Health care cost trend rate assumed for next year 4.50% 5.00% Rate to which the cost trend is assumed to decline (ultimate trend rate) 4.50% 4.50% Year that the rate reaches the ultimate trend rate 2022 2022 Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) The expected health care cost trend rates are based on historical trends for these costs, as well as recently enacted health care legislation. The Company also compares health care cost trend rates to those of the industry. Investment Objective and Asset Allocation The investment objective for the defined benefit pension plans is to sufficiently diversify invested plan assets to maintain a reasonable level of risk without imprudently sacrificing the return on the invested funds, and ultimately to achieve a long-term total rate of return, net of fees and expenses, at least equal to the long-term interest rate assumptions used for funding actuarial valuations. To achieve this objective, the Company’s overall investment strategy is to maintain an investment allocation mix of long-term growth investments (equities) and fixed income investments (debt securities). Investment allocation targets have been established by asset class after considering the nature of the liabilities, long-term return expectations, the risks associated with key asset classes, funded position, inflation and interest rates and related management fees and expenses. In addition, the defined benefit pension plan’s investment strategy seeks to minimize risk beyond legislated requirements by constraining the investment managers’ investment options. There are a number of specific constraints based on investment type, but they all have the general purpose of ensuring that the investments are fully diversified and that risk is appropriately managed. For example, there are constraints on the book value of assets that can be invested in any one entity or group, and all equity holdings must be listed on a public exchange. Reviews of the investment objectives, key assumptions and the independent investment managers are performed periodically. Pension De-Risking Actions During 2017, the Company initiated a pension de-risking strategy for Celgar’s defined benefit plan. The first step of the strategy resulted in changing the target investment mix to 80% debt securities, to more effectively hedge the plan liabilities for inactive members, and 20% equity securities, to consider the inflationary effect of future salary increases for the remaining active members. In 2018, the Company used the debt security investments in Celgar’s defined benefit plan to purchase buy-in annuities for all inactive members. This transaction fully hedges the plan liabilities for the majority of inactive members. Concentrations of Risk in the Defined Benefit Pension Plan’s Assets The Company has reviewed the defined benefit pension plan’s equity investments and determined that they are allocated based on the specific investment managers’ stated investment strategies with only slight over- or under-weightings within any specific category, and that those investments are within the constraints that have been set by the Company. Those constraints include a limitation on the value that can be invested in any one entity or investment category. The Company has concluded that there are no significant concentrations of risk. The following table presents the Celgar and Peace River defined benefit pension plans’ assets fair value measurements as of December 31, 2021 under the fair value hierarchy: Fair value measurements as of December 31, 2021 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ — $ 64,057 $ — $ 64,057 Debt securities — 31,125 — 31,125 Buy-in annuity — — 24,458 24,458 Other — 1,741 — 1,741 Total assets $ — $ 96,923 $ 24,458 $ 121,381 Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) The following table presents the Celgar and Peace River defined benefit pension plans’ assets fair value measurements as of December 31, 2020 under the fair value hierarchy: Fair value measurements as of December 31, 2020 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ — $ 49,485 $ — $ 49,485 Debt securities — 34,603 — 34,603 Buy-in annuity — — 26,017 26,017 Cash and other short-term assets — 13 — 13 Other — 358 — 358 Total assets $ — $ 84,459 $ 26,017 $ 110,476 The change in Level 3 fair value measurements of plan assets for the years ended December 31, 2021 and 2020 was as follows: Buy-in Annuity Balance as of December 31, 2019 $ 25,343 Actual return on plan assets 710 Benefit payments (1,724 ) Actuarial losses 1,170 Effect of foreign currency exchange rate changes 518 Balance as of December 31, 2020 26,017 Actual return on plan assets 645 Benefit payments (1,789 ) Actuarial gains (545 ) Effect of foreign currency exchange rate changes 130 Balance as of December 31, 2021 $ 24,458 Defined Contribution Plan Effective December 31, 2008, the defined benefit plans at the Celgar mill were closed to new members. In addition, the related defined benefit service accrual ceased on December 31, 2008, and members began to receive pension benefits, at a fixed contractual rate, under a new defined contribution plan effective January 1, 2009. The Company’s head office employees also participate in a defined contribution plan . Multiemployer Plan The Company participates in a multiemployer plan for the hourly-paid employees at the Celgar mill. The contributions to the plan are determined based on a percentage of pensionable earnings pursuant to a collective bargaining agreement. The Company has no current or future contribution obligations in excess of the contractual contributions. During the year ended December 31, 2021, the Company made contributions of $2,370 to this plan (2020 – $1,933; 2019 – $2,203). Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) Plan details for the years ended December 31, 2021, 2020 and 2019 were as follows: Provincially Registered Plan Expiration Date of Collective Bargaining Are the Company's Contributions Greater Than 5% of Total Contributions Legal name Number Agreement 2021 2020 2019 The Pulp and Paper Industry Pension Plan P085324 April 30, 2021 Yes No Yes Celgar’s hourly employees are currently working under the expired collective bargaining agreement during the period in which the new agreement is being negotiated.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 13. Income Taxes The components of i ncome (loss) before income taxes for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 U.S. $ (75,955 ) $ (22,284 ) $ (43,408 ) Foreign 336,522 11,145 52,995 $ 260,567 $ (11,139 ) $ 9,587 Provision for income taxes recognized in the Consolidated Statements of Operations for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: Year Ended December 31, 2021 2020 2019 U.S. Federal and State current income tax provision $ 156 $ 1,782 $ 342 Foreign current income tax provision 70,632 19,563 26,757 Total current income tax provision 70,788 21,345 27,099 Foreign deferred income tax provision (recovery) 18,791 (15,249 ) (7,873 ) Total income tax provision $ 89,579 $ 6,096 $ 19,226 During the year ended December 31, 2021, the foreign current income tax provision is primarily for the German entities. The Company’s effective income tax rate can be affected by many factors, including but not limited to, changes in the mix of earnings in tax jurisdictions with differing statutory rates, changes in corporate structure, changes in the valuation of deferred tax assets and liabilities, the result of audit examinations of previously filed tax returns and changes in tax laws and rates. The asset and liability approach is used to recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities. Note 13. Income Taxes (continued) The Company and/or one or more of its subsidiaries file income tax returns in the U.S., Germany, Canada and Australia. Currently, the Company does not anticipate that the expiration of the statute of limitations or the completion of audits in the next fiscal year will result in liabilities for uncertain income tax positions that are materially different than the amounts accrued or disclosed as of December 31, 2021. However, this could change as tax years are examined by taxing authorities, the timing of which are uncertain at this time. The German tax authorities have completed examinations up to and including the 2017 tax year for all but three German entities. For these three entities the German tax authorities have completed examinations up to and including the 2013 tax year. The Company is generally not subject to U.S. or Canadian income tax examinations for tax years before 2018 and 2017, respectively. The Company believes that it has adequately provided for any reasonable foreseeable outcomes related to its tax audits and that any settlement will not have a material adverse effect on its consolidated results. The liability in the Consolidated Balance Sheets related to unrecognized tax benefits was $nil as of December 31, 2021 (2020 – $nil). The Company recognizes interest and penalties related to unrecognized tax benefits in “Income tax provision” in the Consolidated Statements of Operations. During the years ended December 31, 2021, 2020 and 2019 the Company did not record any Differences between the U.S. Federal statutory and the Company’s effective rates for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 U.S. Federal statutory rate 21% 21% 21% U.S. Federal statutory rate on income (loss) before income taxes $ (54,724 ) $ 2,339 $ (2,013 ) Tax differential on foreign income (25,361 ) (1,982 ) (5,368 ) Effect of foreign earnings (a) (7,524 ) (3,002 ) (13,747 ) Valuation allowance (12,048 ) (8,383 ) (11,643 ) Tax benefit of partnership structure 3,132 3,740 3,841 Non-taxable foreign subsidies 2,936 2,851 3,200 True-up of prior year taxes 5,616 (1,863 ) 6,031 Other (1,606 ) 204 473 Income tax provision $ (89,579 ) $ (6,096 ) $ (19,226 ) (a) Primarily due to the impact of the global intangible low-taxed income provision in the Tax Cuts and Jobs Act of 2017 . Note 13. Income Taxes (continued) Deferred income tax assets and liabilities as of December 31, 2021 and December 31, 2020 were comprised of the following: December 31, 2021 2020 German tax loss carryforwards $ 9,500 $ 29,378 U.S. tax loss carryforwards and credits 22,168 6,964 Canadian tax loss carryforwards 40,363 44,256 Australian tax loss carryforwards 5,090 3,783 Basis difference between income tax and financial reporting with respect to operating pulp mills (146,000 ) (145,858 ) Amortizable intangible assets (9,449 ) (10,504 ) Other long-term assets (5,646 ) (4,926 ) Debt (5,691 ) (6,553 ) Accounts payable and accrued expenses 5,382 1,621 Deferred pension liability 6,341 16,278 Finance leases 17,245 12,895 Scientific research and experimental development investment tax credit and expenditure pool 4,552 4,433 Other 5,389 3,702 (50,756 ) (44,531 ) Valuation allowance (43,190 ) (31,142 ) Net deferred income tax liability $ (93,946 ) $ (75,673 ) Comprised of: Deferred income tax asset $ 1,177 $ 1,355 Deferred income tax liability (95,123 ) (77,028 ) Net deferred income tax liability $ (93,946 ) $ (75,673 ) The following table details the scheduled expiration dates of the Company’s net operating loss, interest, investment tax credit and other tax attributes carryforwards as of December 31, 2021: Amount Expiration U.S. Interest $ 105,200 Indefinite Germany Net operating loss $ 8,100 Indefinite Interest $ 29,644 Indefinite Canada Net operating loss $ 152,700 2036 – 2041 Scientific research and experimental development investment tax credit $ 5,200 2030 – 2039 Scientific research and experimental development expenditure pool $ 3,000 Indefinite Australia Net operating loss $ 17,000 Indefinite At each reporting period, the Company assesses whether it is more likely than not that the deferred tax assets will be realized, based on the review of all available positive and negative evidence, including future reversals of existing taxable temporary differences, estimates of future taxable income, past operating results and prudent and feasible tax planning strategies. The carrying value of the Company’s deferred tax assets reflects its expected ability to generate sufficient future taxable income in certain tax jurisdictions to utilize these deferred income tax benefits. Significant judgment is required when evaluating this positive and negative evidence. Note 13. Income Taxes (continued) Changes in valuation allowances related to net deferred tax assets for the years ended December 31, 2021 and 2020 were as follows: December 31, 2021 2020 Balance as of January 1 $ 31,142 $ 22,759 Additions (reversals) U.S. 14,770 1,734 Canada (2,851 ) 6,017 The impact of changes in foreign exchange rates 129 632 Balance as of December 31 $ 43,190 $ 31,142 As of December 31, 2021, the Company has recognized the deferred tax assets of its German entities and has a full valuation allowance against the net deferred tax assets of its U.S. and Canadian entities. The Company has not recognized a tax liability on the undistributed earnings of foreign subsidiaries as of December 31, 2021 because these earnings are expected to be permanently reinvested outside the U.S. or repatriated without incurring a tax liability. As of December 31, 2021, the cumulative amount of undistributed earnings upon which U.S. income taxes have not been provided was approximately $364,316.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Shareholders' Equity	Note 14. Shareholders’ Equity Dividends The Company’s board of directors declared quarterly dividends during the years ended December 31, 2021 and 2020 as follows: Date Declared Dividend Per Common Share Amount February 16, 2021 $ 0.065 $ 4,289 April 29, 2021 0.065 4,293 July 29, 2021 0.065 4,292 October 28, 2021 0.065 4,293 $ 0.2600 $ 17,167 Date Declared Dividend Per Common Share Amount February 13, 2020 $ 0.1375 $ 9,047 April 30, 2020 0.0650 4,282 July 30, 2020 0.0650 4,281 October 29, 2020 0.0650 4,282 $ 0.3325 $ 21,892 On February 17, 2022, the Company’s board of directors declared a quarterly dividend of $0.0750 per common share. Payment of the dividend will be on April 6, 2022 to all shareholders of record on March 30, 2022. Future dividends are subject to approval by the board of directors and may be adjusted as business and industry conditions warrant. Note 14. Shareholders’ Equity (continued) Share Capital Preferred shares The Company has authorized 50,000,000 preferred shares (2020 – 50,000,000) with $1 par value issuable in series, of which 2,000,000 shares have been designated as Series A. The preferred shares may be issued in one or more series. Designations and preferences for each series shall be stated in the resolutions providing for the designation and issuance of each such series adopted by the Company’s board of directors. The board of directors is authorized by the Company’s articles of incorporation to determine the voting, dividend, redemption and liquidation preferences pertaining to each such series. As of December 31, 2021, no preferred shares had been issued by the Company. Share Repurchase Program In May 2019, the Company’s board of directors authorized a common stock repurchase program, under which the Company may repurchase up to $50,000 of its shares, which expired in May 2020 For the year ended December 31, 2020, prior to the expiration, the Company paid $162 to acquire 23,584 common shares at an average repurchase price of $6.84. For the year ended December 31, 2019 the Company paid $754 to acquire 52,879 common shares at an average repurchase price of $14.25. The shares acquired for the years ended December 31, 2020 and 2019 were retired upon repurchase. Stock Based Compensation In June 2010, the Company adopted a stock incentive plan which provides for options, restricted stock rights, restricted shares, performance shares, PSUs and stock appreciation rights to be awarded to employees, consultants and non-employee directors. During the year ended December 31, 2021, there were no issued and outstanding options, restricted stock rights, performance shares or stock appreciation rights. As of December 31, 2021, after factoring in all allocated shares, there remain approximately 1.2 million common shares available for grant. PSUs PSUs comprise rights to receive common shares at a future date that are contingent on the Company and the grantee achieving certain performance objectives. The performance objective period is generally three years. For the year ended December 31, 2021, the Company recognized an expense of $1,739 related to PSUs (2020 – $420; 2019 – $2,557). PSU activity during the year ended December 31, 2021 was as follows: Number of PSUs Weighted Average Grant Date Fair Value Per Unit Outstanding as of January 1, 2021 2,364,848 $ 12.61 Granted 1,007,912 13.72 Vested and issued (120,271 ) 12.75 Forfeited (498,017 ) 12.75 Outstanding as of December 31, 2021 2,754,472 $ 12.98 Note 14. Shareholders’ Equity (continued) The weighted-average grant date fair value per unit of all PSUs granted in 2020 and 2019 was $11.00 and $15.34, respectively. The total fair value of PSUs vested and issued in 2021, 2020 and 2019 was $1,642, $2,101 and $6,754, respectively. Restricted Shares Restricted shares generally vest at the end of one year. Expense recognized for the year ended December 31, 2021 was $655 (2020 – $508; 2019 – $479). As of December 31, 2021, the total remaining unrecognized compensation cost related to restricted shares amounted to approximately $304 which will be amortized over the remaining vesting periods. Restricted share activity during the year ended December 31, 2021 was as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Per Share Outstanding as of January 1, 2021 68,140 $ 8.07 Granted 49,195 14.84 Vested (68,140 ) 8.07 Outstanding as of December 31, 2021 49,195 $ 14.84 The weighted-average grant date fair value per share of all restricted shares granted in 2020 and 2019 was $8.07 and $14.33, respectively. The total fair value of restricted shares vested and issued in 2021, 2020 and 2019 was $1,011, $248 and $466, respectively.

Net Income (Loss) Per Common Sh

Net Income (Loss) Per Common Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Common Share	Note 15. Net Income (Loss) Per Common Share The reconciliation of basic and diluted net income (loss) per common share for the years ended December 31, 2021, 2020 and 2019 was as follows: For the Year Ended December 31, 2021 2020 2019 Net income (loss) Basic and diluted $ 170,988 $ (17,235 ) $ (9,639 ) Net income (loss) per common share Basic $ 2.59 $ (0.26 ) $ (0.15 ) Diluted $ 2.58 $ (0.26 ) $ (0.15 ) Weighted average number of common shares outstanding: Basic (a) 65,944,494 65,768,485 65,553,196 Effect of dilutive instruments: PSUs 312,455 — — Restricted shares 27,054 — — Diluted 66,284,003 65,768,485 65,553,196 (a) For the year ended December 31, 2021, the basic weighted average number of common shares outstanding Note 15. Net Income (Loss) Per Common Share (continued) The calculation of diluted net income (loss) per common share does not assume the exercise of any instruments that would have an anti-dilutive effect on net income (loss) per common share. Instruments excluded from the calculation of net income (loss) per common share because they were anti-dilutive for the years ended December 31, 2021, 2020 and 2019 were as follows: For the Year Ended December 31, 2021 2020 2019 PSUs — 2,364,848 1,764,976 Restricted shares — 68,140 31,405

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Loss	Note 16. Accumulated Other Comprehensive Loss The change in accumulated other comprehensive loss by component (net of tax) for the years ended December 31, 2021 and 2020 was as follows: Foreign Currency Translation Adjustment Defined Benefit Pension and Other Post- Retirement Benefit Items Total Balance as of December 31, 2019 $ (114,709 ) $ (1,851 ) $ (116,560 ) Other comprehensive income (loss) before reclassifications 95,131 (6,114 ) 89,017 Amounts reclassified from accumulated other comprehensive loss — (32 ) (32 ) Other comprehensive income (loss), net of taxes 95,131 (6,146 ) 88,985 Balance as of December 31, 2020 (19,578 ) (7,997 ) (27,575 ) Other comprehensive income (loss) before reclassifications (77,939 ) 14,834 (63,105 ) Amounts reclassified from accumulated other comprehensive loss — (113 ) (113 ) Other comprehensive income (loss), net of taxes (77,939 ) 14,721 (63,218 ) Balance as of December 31, 2021 $ (97,517 ) $ 6,724 $ (90,793 )

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 17. Related Party Transactions The Company enters into related party transactions with its joint ventures. For the year ended December 31, 2021, pulp purchases from the Company’s 50% owned CPP mill, which are transacted at the CPP mill’s cost, were $88,073 (2020 – – – – –

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment Information	Note 18. Segment Information The Company is managed based on the primary products it manufactures: pulp and wood products. Accordingly, the Company’s four pulp mills and its 50% interest in the CPP mill are aggregated into the pulp segment, and the Friesau mill is a separate reportable segment, wood products. The Company’s sandalwood business and MMT are included in Corporate and Other as they do not meet the criteria to be reported as separate reportable segments. None of the income or loss items following operating income in the Company’s Consolidated Statements of Operations are allocated to the segments, as those items are reviewed separately by management. Information about certain segment data for the years ended December 31, 2021, 2020 and 2019, was as follows: December 31, 2021 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 Operating income (loss) $ 251,724 $ 108,466 $ (13,607 ) $ 346,583 Depreciation and amortization $ 115,293 $ 14,858 $ 2,048 $ 132,199 Purchase of property, plant and equipment $ 139,312 $ 18,002 $ 2,126 $ 159,440 Total assets (a) $ 1,882,078 $ 258,965 $ 210,189 $ 2,351,232 Revenues by major products Pulp $ 1,389,439 $ — $ — $ 1,389,439 Lumber — 293,166 2,391 295,557 Energy and chemicals 93,654 11,547 6,690 111,891 Wood residuals — 6,368 — 6,368 Total revenues $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 Revenues by geographical markets (b) U.S. $ 183,198 $ 156,762 $ 5,227 $ 345,187 Foreign countries Germany 459,725 62,986 — 522,711 China 375,891 1,245 — 377,136 Other countries 464,279 90,088 3,854 558,221 1,299,895 154,319 3,854 1,458,068 Total revenues $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 (a) Total assets for the pulp segment includes the Company’s $49,651 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship-to location provided by the customer. Note 18. Segment Information (continued) December 31, 2020 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 Operating income (loss) $ 37,952 $ 34,704 $ (8,927 ) $ 63,729 Depreciation and amortization $ 115,945 $ 12,212 $ 764 $ 128,921 Purchase of property, plant and equipment $ 53,734 $ 23,788 $ 996 $ 78,518 Total assets (a) $ 1,740,233 $ 112,267 $ 276,626 $ 2,129,126 Revenues by major products Pulp $ 1,130,302 $ — $ — $ 1,130,302 Lumber — 180,769 — 180,769 Energy and chemicals 90,342 10,619 4,847 105,808 Wood residuals — 6,261 — 6,261 Total revenues $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 Revenues by geographical markets (b) U.S. $ 149,816 $ 93,802 $ 1,734 $ 245,352 Foreign countries Germany 336,346 50,945 — 387,291 China 364,527 3,037 — 367,564 Other countries 369,955 49,865 3,113 422,933 1,070,828 103,847 3,113 1,177,788 Total revenues $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 (a) Total assets for the pulp segment includes the Company’s $46,429 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship – to location provided by the customer. December 31, 2019 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 Operating income (loss) $ 90,583 $ 7,349 $ (13,929 ) $ 84,003 Depreciation and amortization $ 117,108 $ 7,966 $ 1,320 $ 126,394 Purchase of property, plant and equipment $ 103,066 $ 28,425 $ 543 $ 132,034 Total assets (a) $ 1,782,105 $ 83,102 $ 200,513 $ 2,065,720 Revenues by major products Pulp $ 1,370,742 $ — $ — $ 1,370,742 Lumber — 142,243 — 142,243 Energy and chemicals 86,381 9,721 7,351 103,453 Wood residuals — 7,973 — 7,973 Total revenues $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 Revenues by geographical markets (b) U.S. $ 168,197 $ 54,098 $ — $ 222,295 Foreign countries Germany 419,472 53,734 — 473,206 China 430,508 — — 430,508 Other countries 438,946 52,105 7,351 498,402 1,288,926 105,839 7,351 1,402,116 Total revenues $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 (a) Total assets for the pulp segment includes the Company’s $53,122 investment in joint ventures, primarily for the CPP mill (b) Sales are attributed to countries based on the ship-to location provided by the customer. Note 18. Segment Information (continued) Revenues between segments are accounted for at prices that approximate fair value. These include revenues from the sale of residual fiber from the wood products segment to the pulp segment for use in the pulp production process and from the sale of residual fuel from the pulp segment to the wood products segment for use in energy production. For the year ended December 31, 2021, the pulp segment sold $336 of residual fuel to the wood products segment (2020 – $459; 2019 – – The Company’s long-lived assets by geographic area based on location of the asset as of December 31, 2021 and December 31, 2020 were as follows: December 31, 2021 2020 U.S. $ 51,136 $ — Foreign countries Germany 660,745 699,408 Canada 406,985 390,542 Australia 16,765 19,790 1,084,495 1,109,740 $ 1,135,631 $ 1,109,740 In 2021,

Financial Instruments and Fair

Financial Instruments and Fair Value Measurement	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Financial Instruments and Fair Value Measurement	Note 19. Financial Instruments and Fair Value Measurement Due to their short-term maturity, the carrying amounts of cash and cash equivalents, accounts receivable and accounts payable and other, approximates their fair value. The estimated fair values of the Company’s outstanding debt under the fair value hierarchy as of December 31, 2021 and December 31, 2020 were as follows: Fair value measurements as of December 31, 2021 using: Description Level 1 Level 2 Level 3 Total Revolving credit facilities $ — $ 22,874 $ — $ 22,874 Senior notes — 1,197,449 — 1,197,449 $ — $ 1,220,323 $ — $ 1,220,323 Fair value measurements as of December 31, 2020 using: Description Level 1 Level 2 Level 3 Total Revolving credit facilities $ — $ 54,980 $ — $ 54,980 Senior notes — 1,131,229 — 1,131,229 $ — $ 1,186,209 $ — $ 1,186,209 Note 19. Financial Instruments and Fair Value Measurement (continued) The carrying value of the revolving credit facilities classified as Level 2 approximates the fair value as the variable interest rates reflect current interest rates for financial instruments with similar characteristics and maturities. The fair value of the senior notes classified as Level 2 was determined using quoted prices in a dealer market, or using recent market transactions. The Company’s senior notes are not carried at fair value on the Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020. However, fair value disclosure is required. The carrying value of the Company’s senior notes, net of note issuance costs is $1,159,097 as of December 31, 2021 (December 31, 2020 – Credit Risk The Company’s credit risk is primarily attributable to cash held in bank accounts and accounts receivable. The Company maintains cash balances in foreign financial institutions in excess of insured limits. The Company limits its credit exposure on cash held in bank accounts by periodically investing cash in excess of short-term operating requirements and debt obligations in low risk government bonds, or similar debt instruments. The Company’s credit risk associated with the sale of pulp, lumber and other wood residuals is managed through setting credit limits, the purchase of credit insurance and for certain customers a letter of credit is received prior to shipping the product. The Company reviews new customers’ credit history before granting credit and conducts regular reviews of existing customers’ credit. Concentrations of credit risk on the sale of pulp, lumber and other wood residuals are with customers and agents based primarily in Germany, China and the U.S. The Company’s exposure to credit losses may increase if its customers are adversely affected by the COVID-19 pandemic. Although the Company has historically not experienced significant credit losses, it is possible that there could be a material adverse impact from potential adjustments of the carrying amount of trade receivables if the cash flows of the Company’s customers are adversely impacted by the COVID-19 pandemic. As of December 31, 2021 the Company has not had significant credit losses due to the COVID-19 pandemic. The carrying amount of cash and cash equivalents as of December 31, 2021 of $345,610 and accounts receivable as of December 31, 2021 of $345,345 recorded in the Consolidated Balance Sheet, net of any allowances for losses, represents the Company’s maximum exposure to credit risk.

Lease Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Lease Commitments	Note 20. Lease Commitments The Company has finance leases primarily for rail cars and production equipment. The rail cars primarily have a remaining lease term of seven to 12 years with annual renewal options thereafter. The production equipment has a weighted average remaining lease term of eight years. The Company has operating leases primarily for land to support the sandalwood tree plantations and for offices. The land leases have remaining terms of three to 10 years with options to renew for up to six years. The office leases have remaining terms of two to six years with options to renew primarily for an additional five years. A majority of the operating leases are subject to annual changes to the Consumer Price Index (“CPI”). Changes to the CPI are treated as variable lease payments and recognized in the period in which the obligation for those payments was incurred. A 100-basis-point increase in CPI would not have a material impact on lease costs. Note 20. Lease Commitments (continued) The components of lease expense for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 Lease cost: Operating lease cost $ 4,086 $ 3,712 $ 3,322 Finance lease cost: Amortization of right-of-use assets 7,481 4,963 3,768 Interest on lease liabilities 1,635 1,460 1,370 Total lease cost $ 13,202 $ 10,135 $ 8,460 Supplemental cash flow information related to leases for the years ended December 31, 2021, 2020 and 2019 was as follows: Year Ended December 31, 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flow payments for operating leases $ 4,086 $ 3,712 $ 3,322 Operating cash flow payments for finance leases $ 1,635 $ 1,460 $ 1,370 Financing cash flow payments for finance leases $ 7,850 $ 4,636 $ 3,344 Other information related to leases for the years ended December 31, 2021, 2020 and 2019 was as follows: Year Ended December 31, 2021 2020 2019 Weighted average remaining lease term: Operating leases 5 years 6 years 7 years Finance leases 8 years 9 years 10 years Weighted average discount rate: Operating leases 6 % 6 % 7 % Finance leases 3 % 3 % 4 % The discount rate used to calculate the present value of the minimum lease payments is the incremental borrowing rate that the subsidiary entering into the lease would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Note 20. Lease Commitments (continued) Supplemental balance sheet information related to leases as of December 31, 2021 and December 31, 2020 was as follows: December 31, 2021 2020 Operating Leases Operating lease right-of-use assets $ 9,712 $ 13,251 Other current liabilities $ 3,192 $ 3,318 Operating lease liabilities 6,574 9,933 Total operating lease liabilities $ 9,766 $ 13,251 Finance Leases Property and equipment, gross $ 87,719 $ 65,418 Accumulated depreciation (24,850 ) (19,353 ) Property and equipment, net $ 62,869 $ 46,065 Other current liabilities $ 8,467 $ 5,364 Long-term debt 55,574 41,329 Total finance lease liabilities $ 64,041 $ 46,693 M aturities of operating lease liabilities as of December 31, 2021 were as follows: Operating Leases 2022 $ 3,732 2023 2,725 2024 1,575 2025 879 2026 662 Thereafter 1,986 Total lease payments 11,559 Less: imputed interest (1,793 ) Total lease liability $ 9,766

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 21. Commitments and Contingencies (a) The Company has purchase obligations relating to take-or-pay contracts, primarily for purchases of fiber, made in the ordinary course of business. As of December 31, 2021, commitments under these contracts were approximately $283,834. (b) The Company is involved in legal actions and claims arising in the ordinary course of business. While the outcome of any legal actions and claims cannot be predicted with certainty, it is the opinion of management that the outcome of any such claims which are pending or threatened, either individually or on a combined basis, will not have a material adverse effect on the consolidated financial condition, results of operations or liquidity of the Company. (c) The Company is subject to regulations that require the handling and disposal of asbestos in a prescribed manner if a property undergoes a major renovation or demolition. Otherwise, the Company is not required to remove asbestos from its facilities. Generally asbestos is found on steam and condensate piping systems as well as certain cladding on buildings and in building insulation throughout older facilities. The Company’s obligation for the proper removal and disposal of asbestos products from the Company’s mills is a conditional asset retirement obligation. As a result of the longevity of the Company’s mills, due in part to the maintenance procedures and the fact that the Company does not have plans for major changes that require the removal of asbestos, the timing of the asbestos removal is indeterminate. As a result, the Company is currently unable to reasonably estimate the fair value of its asbestos removal and disposal obligation. The Company will recognize a liability in the period in which sufficient information is available to reasonably estimate its fair value. (d) In 2021, the European Commission opened a cartel investigation into the wood pulp sector in Europe to investigate if there was an infringement of European Union competition law. In October 2021, the Commission conducted inspections of major European pulp producers including the Company’s German operations. The Company is cooperating with the investigation. As the matter is currently in the investigation stage, the Company cannot predict the timing of the same and what further actions, if any, the European Commission may pursue or what the outcome of any such actions may be.

The Company and Summary of Si_2

The Company and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Background	Background Mercer International Inc. (“Mercer Inc.”) is a Washington corporation and its shares of common stock are quoted and listed for trading on the NASDAQ Global Select Market. Mercer Inc. owns and operates four pulp manufacturing facilities, two in Canada and two in Germany, has a 50% joint venture interest in a northern bleached softwood kraft (“NBSK”) pulp mill in Canada and owns and operates one sawmill in Germany. In August 2021, Mercer Inc. acquired a cross-laminated timber (“CLT”) facility located in Spokane Washington. In these consolidated financial statements, unless otherwise indicated, all amounts are expressed in U.S. dollars (“$”). The symbol “€” refers to euros and the symbol “C$” refers to Canadian dollars.
Basis of Presentation	Basis of Presentation These consolidated financial statements contained herein include the accounts of Mercer Inc. and all of its subsidiaries (collectively, the “Company”). The Company’s consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”). All significant intercompany balances and transactions have been eliminated upon consolidation. Mercer Inc. owns 100% of its subsidiaries with the exception of the 50% joint venture interest in the Cariboo Pulp & Paper Company (“CPP”) with West Fraser Mills Ltd., which is accounted for using the equity method.
Use of Estimates	Use of Estimates Preparation of financial statements and related disclosures in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant management judgment is required in determining the accounting for, among other things, pension and other post-retirement benefit obligations, deferred income taxes (valuation allowance and permanent reinvestment), depreciation and amortization, future cash flows associated with impairment testing for long-lived assets, the allocation of the purchase price in a business combination to the assets acquired and liabilities assumed, legal liabilities and contingencies. Actual results could differ materially from these estimates, and changes in these estimates are recorded when known.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash held in bank accounts and highly liquid investments with original maturities of three months or less.
Investments	Investments Investments in equity securities in which the Company does not exercise significant influence are measured at fair value through earnings. These securities are reported at fair values, based upon quoted market prices, with the unrealized and realized gains or losses included in “Other income” in the Consolidated Statements of Operations.
Accounts Receivable	Accounts Receivable Accounts receivable are recorded at cost, net of an allowance for doubtful accounts. The Company reviews the collectability of accounts receivable at each reporting date and maintains an allowance for doubtful accounts at an amount estimated to cover the expected losses on uninsured accounts receivable. Any amounts that are determined to be uncollectible and uninsured are offset against the allowance. The allowance is based on the Company’s evaluation of numerous factors, including the payment history, financial position of the debtors and current market conditions. The Company’s credit risk associated with its sales is currently managed through the purchase of credit insurance, obtaining letters of credit and setting credit limits prior to the sale. The Company reviews new customers' credit history before granting credit and conducts regular reviews of existing customers' credit.
Inventories	Inventories Inventories of raw materials, finished goods and work in progress are valued at the lower of cost, using the weighted-average cost method, or net realizable value and are released from inventory on the same basis. Spare parts and other materials are valued at the lower of cost and replacement cost. Cost includes labor, materials and production overhead and is determined by using the weighted average cost method. Raw materials inventories include pulp logs, sawlogs and wood chips. These inventories are located both at the mills and at various offsite locations. In accordance with industry practice, physical inventory counts utilize standardized techniques to estimate quantities of pulp logs, sawlogs and wood chip inventory volumes. These techniques historically have provided reasonable estimates of such inventories.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment is stated at cost less accumulated depreciation. Depreciation of buildings and production equipment is based on the estimated useful lives of the assets and is computed using the straight-line method. The amortization periods have been provided in the Property, Plant and Equipment, Net Note. The costs of major rebuilds, replacements and those expenditures that substantially increase the useful lives of existing property, plant and equipment are capitalized. The Company capitalizes interest on borrowings during the construction period of major capital projects as part of the related asset. The cost of repairs and maintenance as well as planned shutdown maintenance performed on manufacturing facilities, composed of labor, materials and other incremental costs, is recognized as an expense in the Consolidated Statements of Operations as incurred. The Company provides for asset retirement obligations when there is a legislated or contractual basis for those obligations. An obligation is recorded as a liability at fair value in the period in which the Company incurs a legal obligation associated with the retirement of an asset. The associated costs are capitalized as part of the carrying value of the related asset and amortized over its remaining useful life. The liability is accreted using a credit adjusted risk-free interest rate.
Impairment of Long-Lived Assets	Note 1. The Company and Summary of Significant Accounting Policies (continued) Impairment of Long-Lived Assets Long-lived assets include property, plant and equipment, net and amortizable intangible assets, net. The unit of accounting for impairment testing for long-lived assets is its “Asset Group”, which includes property, plant and equipment, net, amortizable intangible assets, net and liabilities directly related to those assets. The Company evaluates an Asset Group for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable, such as continuing operating losses. When an indicator that the carrying value of an Asset Group may not be recoverable is triggered, the Company compares the carrying value of the Asset Group to its forecasted undiscounted future cash flows. If the carrying value of the Asset Group is greater than the undiscounted future cash flows an impairment charge is recorded based on the excess of the Asset Group’s carrying value over its fair value.
Leases	Leases The Company determines if a contract contains a lease at inception. Leases are classified as either operating or finance leases. Leases with a term of less than 12 months are not recorded in the Consolidated Balance Sheets, and are expensed over the term of the lease in the Consolidated Statements of Operations. Operating and finance lease right-of-use assets and the related liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the term of the lease. Renewal and termination options are included in the lease terms when it is reasonably certain that they will be exercised. In determining the present value of lease payments, the Company uses the implicit rate when readily determinable, or the Company’s estimated incremental borrowing rate, which is based on information available at the lease commencement date. Lease payments are expensed in the Consolidated Statements of Operations on a straight-line basis over the term of the lease.
Government Grants	Government Grants The Company records grants from federal, provincial and state governments when the conditions of their receipt are complied with and there is reasonable assurance that the grants will be received. Grants related to assets are government grants whose primary condition is that the company qualifying for them should purchase, construct or otherwise acquire long-term assets. Secondary conditions may also be attached, including restricting the type or location of the assets and/or other conditions that must be met. Grants related to assets are deducted from the cost of the assets in the Consolidated Balance Sheets and amortized over the same period as the related asset in “Cost of sales depreciation and amortization” in the Consolidated Statements of Operations. Grants related to income are government grants which are either unconditional, related to reduced environmental emissions or related to the Company’s normal business operations, and are reported as a reduction of related expenses in the Consolidated Statements of Operations. The Company is required to pay certain fees based on wastewater emissions at its German mills. Accrued fees can be reduced upon the mills’ demonstration of reduced wastewater emissions. The fees are expensed as incurred and the fee reduction is recognized once the Company has reasonable assurance that the German regulators will accept the reduced level of wastewater emissions. Both the fees and the fee reduction are recorded to “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. There may be a significant period of time between recognition of the wastewater expense and recognition of the wastewater fee reduction.
Amortizable Intangible Assets	Amortizable Intangible Assets Amortizable intangible assets are stated at cost less accumulated amortization. Amortization is provided on a straight-line basis over the estimated useful lives of the assets. The amortization periods have been provided in the Amortizable Intangible Assets, Net Note.
Sandalwood Tree Plantations	Sandalwood Tree Plantations Sandalwood tree plantations are measured at the lower of cost, which includes both the direct and indirect costs of growing and harvesting the sandalwood trees, and net realizable value. The cost of the sandalwood plantations is recorded in “Other long-term assets” and the cost of the harvested sandalwood is recorded in “Inventories” in the Consolidated Balance Sheets. The sandalwood tree plantations are carried at historical cost and are evaluated for impairment whenever events or changes in circumstances indicate the carrying value may be higher than the net realizable value, such as a sustained drop in sales price.
Pension Plans	Pension Plans The Company maintains defined benefit pension plans for its Peace River employees and its salaried employees at the Celgar mill which are funded and non-contributory. The cost of the benefits earned by the employees is determined using the projected unit credit benefit method prorated on years of service. The pension expense reflects the current service cost, the interest on the unfunded liability and the amortization over the estimated average remaining service life of the employees of: (i) prior service costs, and (ii) the net actuarial gain or loss that exceeds 10% of the greater of the accrued benefit obligation and the fair value of plan assets as of the beginning of the year. The Company recognizes the net funded status of the plan. The Company also has a multiemployer pension plan and defined contribution plans for which contributions are expensed in the Consolidated Statements of Operations.
Foreign Operations and Currency Translation	Foreign Operations and Currency Translation The Company determines its foreign subsidiaries’ functional currency by reviewing the currency of the primary economic environment in which the foreign subsidiaries operate, which is normally the currency of the environment in which the foreign subsidiaries generate and expend cash. The Company translates assets and liabilities of its non-U.S. dollar functional currency subsidiaries into U.S. dollars using the rate in effect at the balance sheet date and revenues and expenses are translated at the average rate of exchange throughout the period. Foreign currency translation gains and losses are recognized within “Accumulated other comprehensive loss” in the Consolidated Balance Sheets. Transactions in foreign currencies are translated to the respective functional currencies of each operation using exchange rates at the dates of the transactions. Monetary assets and liabilities denominated in foreign currencies at the reporting date are translated to the functional currency using the exchange rate at that date. Non-monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using historical exchange rates. Gains and losses resulting from foreign currency transactions related to operating activities are included in “Cost of sales, excluding depreciation and amortization” while those related to non-operating activities are included in “Other income” in the Consolidated Statements of Operations. Where intercompany loans are of a long-term investment nature, exchange rate changes are included as a foreign currency translation adjustment within “Accumulated other comprehensive loss” in the Consolidated Balance Sheets.
Revenue Recognition	Note 1. The Company and Summary of Significant Accounting Policies (continued) Revenue Recognition The Company recognizes revenue when obligations under the terms of a contract with its customer are satisfied; generally this occurs with the transfer of control of the products sold. Transfer of control to the customer is based on the standardized shipping terms in the contract as this determines when the Company has the right to payment, the customer has legal title to the asset and the customer has the risks of ownership. Payment is due, and a receivable is recognized after control has transferred to the customer and revenue is recognized. Payment terms are defined in the contract as typically due within three months after control has transferred to the customer, and as such, the contracts do not have a significant financing component. The Company has elected to exclude value added, sales and other taxes it collects concurrent with revenue-producing activities from revenues. The Company may arrange shipping and handling activities as part of the sale of its products. The Company has elected to account for shipping and handling activities that occur after the customer has obtained control of the product as a fulfillment cost rather than as an additional promised service. The following is a description of the principal activities from which the Company generates its revenues. For a breakdown of revenues by product and geographic location see the Segment Information Note. Pulp and Lumber Revenues For European sales sent by truck or train from the mills directly to the customer, the contracted sales terms are such that control transfers once the truck or train leaves the mill. For orders sent by ocean freighter, the contract terms state that control transfers at the time the product passes the ship’s rail. For North American sales shipped by truck or train, the contracts state that control transfers once the truck or train has arrived at the customer’s specified location. The transaction price is included in the sales contract and is net of customer discounts, rebates and other selling concessions. The Company’s pulp sales are to tissue and paper producers and the Company’s lumber sales are to manufacturers and retailers. The Company’s sales in Europe and North America are direct to the customer. The Company’s pulp sales to overseas customers are primarily through third party sales agents and the Company’s lumber sales to overseas customers are either direct to the customer or through third party sales agents. The Company is the principal in all of the arrangements with third party sales agents. By-Product Revenues Energy sales are to utility companies in Canada and Germany. Sales of energy are recognized as the electricity is consumed by the customer and is based on contractual usage rates and meter readings that measure electricity consumption. Chemicals and wood residuals from the German mills are sold into the European market direct to the customer and have shipping terms where control transfers once the chemicals or wood residuals are loaded onto the truck at the mill.
Shipping and Handling Costs	Shipping and Handling Costs Amounts charged to customers for shipping and handling costs are recognized in “Revenues” in the Consolidated Statements of Operations. Shipping and handling costs incurred by the Company are included in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations at the time the related revenue is recognized.
Insurance Claims	Insurance Claims The Company records business interruption insurance proceeds once the insurance provider acknowledges that the claim is covered and agrees in writing to the amount to be paid for the claim. The Company reports business interruption insurance proceeds in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. The Company records insurance proceeds related to property up to the amount of the related impairment when it is probable they will be received. Proceeds in excess of the impairment are recorded once the insurance provider acknowledges that the claim is covered and agrees in writing to the amount to be paid for the claim. The Company reports property insurance proceeds in the same line item in which the related impairment was recognized in the Consolidated Statements of Operations.
Stock-Based Compensation	Stock-Based Compensation The Company recognizes stock-based compensation expense over an award’s requisite service period based on the award’s fair value in “Selling, general, and administrative expenses” in the Consolidated Statements of Operations. The Company issues new shares upon the exercise of stock-based compensation awards. For performance share units (“PSUs”) which have the same grant and service inception date, the fair value is based upon the targeted number of shares to be awarded and the quoted market price of the Company’s shares at that date. For PSUs where the service inception date precedes the grant date, the fair value is based upon the targeted number of shares awarded and the quoted price of the Company’s shares at each reporting date up to the grant date. The target number of shares is determined using management’s best estimate. The final determination of the number of shares to be granted is made by the Company’s board of directors. The Company estimates forfeitures of PSUs based on management’s expectations and recognizes compensation cost only for those awards expected to vest. Estimated forfeitures are adjusted to actual experience at each balance sheet date. The fair value of restricted shares is determined based upon the number of shares granted and the quoted price of the Company’s shares on the date of grant.
Deferred Income Taxes	Deferred Income Taxes Deferred income taxes are recognized using the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and operating loss and tax credit carryforwards. Valuation allowances are provided if, after considering both positive and negative available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. Deferred income taxes are determined separately for each tax-paying component of the Company. For each tax-paying component, all deferred tax liabilities and assets are offset and presented as a single net amount.
Derivative Financial Instruments	Derivative Financial Instruments The Company occasionally enters into derivative financial instruments to manage certain market risks. These derivative instruments are not designated as hedging instruments and accordingly, are recorded at fair value in the Consolidated Balance Sheets with the changes in fair value recognized in “Other income” in the Consolidated Statements of Operations. Periodically, the Company enters into derivative contracts to supply materials for its own use and as such are exempt from mark-to-market accounting.
Fair Value Measurements	Fair Value Measurements The fair value methodologies and, as a result, the fair value of the Company’s financial instruments are determined based on the fair value hierarchy provided in the Fair Value Measurements and Disclosures topic of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification, and are as follows: Level 1 – Valuations based on quoted prices in active markets for identical assets and liabilities. Level 2 – Valuations based on observable inputs in active markets for similar assets and liabilities, other than Level 1 prices, such as quoted commodity prices or interest or currency exchange rates. Level 3 – Valuations based on significant unobservable inputs that are supported by little or no market activity, such as discounted cash flow methodologies based on internal cash flow forecasts. The financial instrument’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.
Net Income (Loss) Per Common Share	Net Income (Loss) Per Common Share Basic net income (loss) per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding in the period. Diluted net income (loss) per common share is calculated to give effect to all potentially dilutive common shares outstanding by applying the “Treasury Stock” and “If-Converted” methods. Instruments that could have a potentially dilutive effect on the Company’s weighted average shares outstanding include all or a portion of outstanding stock options, restricted shares, restricted share units, performance shares and PSUs.
Business Combinations	Business Combinations The Company uses the acquisition method in accounting for a business combination that meets the definition of a business. Under this approach, identifiable assets acquired and liabilities assumed are recorded at their respective fair market values at the date of acquisition. In developing estimates of fair market values for long-lived assets, including identifiable intangible assets, the Company utilizes a variety of inputs including forecasted cash flows, discount rates, estimated replacement costs and depreciation and obsolescence factors. Valuations are performed by management or independent valuation specialists under management’s supervision, where appropriate. Acquisition costs, as well as costs to integrate acquired companies, are expensed as incurred in the Consolidated Statements of Operations.
Impact of the COVID-19 Pandemic	Note 1. The Company and Summary of Significant Accounting Policies (continued) Impact of the COVID-19 Pandemic The Company is subject to risks and uncertainties as a result of the COVID-19 pandemic. During the pandemic, there have been several “waves” or periods during which there has been a significant widespread increase in reported infections and the emergence and rapid spread of new variants of the COVID-19 virus. In response to such waves, various countries have from time to time re-imposed various restrictions on social, business, travel and other activities. Such economic disruption could have a material adverse effect on the Company’s business. As of the date of issuance of these consolidated financial statements, the Company has not had significant downtime or closures at its mills or disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic, but the extent to which the COVID-19 pandemic may materially impact the Company's future financial condition, liquidity, or results of operations remains uncertain. The Company’s future results of operations and liquidity, however, could be adversely impacted by economic factors arising from the pandemic that affect our business and customers. For instance, we may experience delays in payments of outstanding receivable amounts beyond normal payment terms, supply chain disruptions and uncertain demand, and the impact of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by its customers.
New Accounting Pronouncements	New Accounting Pronouncements Accounting Pronouncements Adopted Government Assistance - Disclosures by Business Entities about Government Assistance In November 2021, the FASB issued Accounting Standards Update (“ASU”) 2021-10 Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance. The amendments in this update require disclosures about transactions with a government that have been accounted for by analogizing to a grant or contribution accounting model to increase transparency about (1) the nature of the transactions, (2) the accounting for the transactions, (3) the line items affected by the transactions in an entity’s financial statements, and (4) the significant terms and conditions of the transactions. This update is effective for annual financial statements issued for fiscal years beginning after December 15, 2021, with early adoption permitted. The disclosure required by the update has been included in the Government Grants accounting policy, the Property, Plant and Equipment, Net Note and the Accounts Payable and Other Note. Business Combinations - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In October 2021, the FASB issued ASU 2021-08 Business Combinations (Topic 805) - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which address diversity and inconsistency related to the recognition and measurement of contract assets and contract liabilities acquired in a business combination. The amendments in this update require that an acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers.

Other Income (Tables)

Other Income (Tables)	12 Months Ended
	Dec. 31, 2020
Other Income And Expenses [Abstract]
Schedule of Other Income	Other income for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: For the Year Ended December 31, 2021 2020 2019 Foreign exchange gain (loss) $ 12,674 $ (13,797 ) $ 1,080 Gain on sale of investments (a) — 17,540 — Other 1,725 2,135 5,004 Other income $ 14,399 $ 5,878 $ 6,084 (a) In 2020, the Company purchased certain equity security investments for $9,370 and sold them for $26,910 which resulted in a realized gain of $17,540. These investments were Level 1 investments and were held at fair value with gains and losses included in earnings. As of December 31, 2021 and December 31, 2020, the Company held no such investments.

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Schedule of Accounts Receivable Net	Accounts receivable, net as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, 2021 2020 Trade, net of allowance of $845 (2020 — $552) $ 293,498 $ 210,963 Insurance claims (a) 37,953 — Other 13,894 16,092 $ 345,345 $ 227,055 (a) Insurance claims receivable are for the final settlement of the 2021 Peace River boiler claims and include the remaining business interruption claim of C$40.0 million ($31,551) and the remaining property claim of C$8.1 million ($6,402). Subsequent to year end, the insurance claims receivable were settled in full.

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Net [Abstract]
Components of Inventories	Inventories as of December 31, 2021 and December 31, 2020, were comprised of the following: December 31, 2021 2020 Raw materials $ 106,434 $ 74,526 Finished goods 140,829 88,256 Spare parts and other 109,468 108,914 $ 356,731 $ 271,696

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Property Plant And Equipment [Abstract]
Schedule of Property, Plant and Equipment, Net	Property, plant and equipment, net as of December 31, 2021 and December 31, 2020, was comprised of the following: Estimated Useful Lives December 31, (Years) 2021 2020 Land $ 61,067 $ 63,610 Buildings 10 - 50 309,039 290,150 Production and other equipment 5 - 25 2,079,801 2,037,050 2,449,907 2,390,810 Less: accumulated depreciation (1,314,276 ) (1,281,070 ) $ 1,135,631 $ 1,109,740

Amortizable Intangible Assets_2

Amortizable Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Amortizable Intangible Assets Net	Amortizable intangible assets, net as of December 31, 2021 and December 31, 2020, were comprised of the following: Estimated December 31, 2021 December 31, 2020 Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Energy sales agreement 11 $ 17,047 $ (7,327 ) $ 9,720 $ 18,470 $ (6,253 ) $ 12,217 Timber cutting rights 30 39,714 (4,051 ) 35,663 39,546 (2,714 ) 36,832 Software and other intangible assets 5 27,376 (24,857 ) 2,519 27,851 (25,329 ) 2,522 $ 84,137 $ (36,235 ) $ 47,902 $ 85,867 $ (34,296 ) $ 51,571
Schedule of Amortization Expense Related to Intangible Assets	Amortization expense for the next five years related to intangible assets as of December 31, 2021 is expected to be as follows: 2022 2023 2024 2025 2026 Amortization expense $ 3,934 $ 3,563 $ 3,324 $ 3,076 $ 2,933

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Schedule of Other Long-Term Assets	Other long-term assets as of December 31, 2021 and December 31, 2020, were comprised of the following: December 31, 2021 2020 Sandalwood tree plantations $ 30,731 $ 28,600 Other 7,987 3,328 $ 38,718 $ 31,928

Accounts Payable and Other (Tab

Accounts Payable and Other (Tables)	12 Months Ended
	Dec. 31, 2021
Payables And Accruals [Abstract]
Schedule of Accounts Payable and Other	Accounts payable and other as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, 2021 2020 Trade payables $ 58,451 $ 42,730 Accrued expenses 76,409 60,622 Interest payable 26,506 33,241 Income tax payable 56,241 23,256 Payroll-related accruals 20,707 18,993 Wastewater fee (a) 19,248 13,407 Finance lease liability 8,467 5,364 Operating lease liability 3,192 3,318 Government grants (b) 7,302 7,161 Other 5,784 2,902 $ 282,307 $ 210,994 (a) The Company is required to pay certain fees based on wastewater emissions at its German mills. Accrued fees can be reduced upon the mills’ demonstration of reduced wastewater emissions. Reductions to the wastewater fees for the year ended December 31, 2021 were $nil (2020 – $nil; 2019 – $20,859). (b) The Canadian mills have a liability for unspent government grants which are required to be used to partially finance greenhouse gas emission reduction and innovation capital projects. The grants are recorded in “Cash and cash equivalents” in the Consolidated Balance Sheets, however, they are considered to be restricted as they are repayable if the mills do not spend the funds on approved projects .

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Debt	Debt as of December 31, 2021 and December 31, 2020, was comprised of the following: December 31, Maturity 2021 2020 Senior notes (a) 5.500% senior notes 2026 $ 300,000 $ 300,000 5.125% senior notes 2029 875,000 — 6.500% senior notes 2024 — 250,000 7.375% senior notes 2025 — 550,000 Credit arrangements €200 million joint revolving credit facility (b) 2023 — — C$60 million revolving credit facility (c), (d) 2024 22,874 21,992 C$60 million revolving credit facility (c), (e) 2023 — 32,988 €2.6 million demand loan (f) — — Finance lease liability 64,041 46,693 1,261,915 1,201,673 Less: unamortized premium and issuance costs, net (15,903 ) (9,686 ) Less: finance lease liability due within one year (8,467 ) (5,364 ) $ 1,237,545 $ 1,186,623 (a) In January 2021, the Company issued $875,000 in aggregate principal amount of 5.125% senior notes which mature on February 1, 2029 (the “2029 Senior Notes”). The net proceeds from the 2029 Senior Notes issuance were $860,517 after deducting the underwriter’s discount and offering expenses. The net proceeds were used to redeem the outstanding senior notes which were to mature in 2024 and 2025 and for general corporate purposes. In connection with the redemption, the Company recorded a loss on early extinguishment of debt of $30,368 in the Consolidated Statements of Operations. Note 11. Debt (continued) The 2029 Senior Notes and the senior notes which mature on January 15, 2026 (the “2026 Senior Notes” and collectively with the 2029 Senior Notes, the “Senior Notes”) are general unsecured senior obligations of the Company. The Company may redeem all or a part of the Senior Notes, upon not less than 10 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date. The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes: 2026 Senior Notes 2029 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage January 15, 2021 102.750% February 1, 2024 102.563% January 15, 2022 101.375% February 1, 2025 101.281% January 15, 2023 and thereafter 100.000% February 1, 2026 and thereafter 100.000% (b) A €200.0 million joint revolving credit facility with all of the Company’s German mills that matures in December 2023. Borrowings under the facility are unsecured and bear interest at Euribor plus a variable margin ranging from 1.05% to 2.00% dependent on conditions including but not limited to a prescribed leverage ratio. As of December 31, 2021, approximately €10.5 million ($11,906) of this facility was supporting bank guarantees and approximately €189.5 million ($214,614) was available. (c) In January 2022, the Company entered into a new C$160.0 million joint revolving credit facility for the Celgar mill, Peace River mill and MFS. The new facility has a five year term and replaces the C$60.0 million revolving credit facility for the Peace River mill and the C$60.0 million revolving credit facility for the Celgar mill. The facility is available by way of: (i) Canadian denominated advances, which bear interest at a designated prime rate per annum; (ii) banker’s acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker’s acceptance plus 1.20% to 1.45% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, an Adjusted Term SOFR for a one month tenor plus 1.00% and the bank’s applicable reference rate for U.S. dollar loans; and (iv) dollar SOFR advances, which bear interest at Adjusted Term SOFR plus 1.20% to 1.45% per annum. (d) A C$60.0 million revolving credit facility for Peace River. The facility was available by way of: (i) Canadian dollar denominated advances, which bear interest at a designated prime rate per annum; (ii) banker’s acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker’s acceptance plus 1.25% to 1.50% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, a designated LIBOR rate plus 1.00% and the bank’s applicable reference rate for U.S. dollar loans; and (iv) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.50% per annum. Borrowings under the facility were collateralized by, among other things, the mill’s inventories and accounts receivable. As of December 31, 2021, approximately C$29.0 million ($22,874) of this facility was drawn and accruing interest at a rate of 2.45%, approximately C$0.9 million ($722) was supporting letters of credit and approximately C$30.1 million ($23,730) was available. (e) A C$60.0 million revolving credit facility for Celgar. Borrowings under the facility were collateralized by the mill's inventories, accounts receivable, general intangibles and capital assets and were restricted by a borrowing base calculated on the mill's inventories and accounts receivable. The facility was available by way of: (i) Canadian and U.S. dollar denominated advances, which bear interest at a designated prime rate less 0.125% to plus 0.125% per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.625% per annum; and (iii) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.625% per annum. As of December 31, 2021, approximately C$0.5 million ($356) was supporting letters of credit and approximately C$59.5 million ($46,970) was available. Note 11. Debt (continued) (f) A €2.6 million demand loan for Rosenthal that does not have a maturity date. Borrowings under this facility are unsecured and bear interest at the rate of the three-month Euribor plus 2.50%. As of December 31, 2021, approximately €2.6 million ($2,890) of this facility was supporting bank guarantees and approximately $nil was available.
Principal Maturities of Debt	The maturities of the principal portion of debt as of December 31, 2021 were as follows: Senior Notes and Credit Arrangements Finance Leases 2022 $ — $ 9,861 2023 — 9,620 2024 22,874 8,787 2025 — 7,943 2026 300,000 7,489 Thereafter 875,000 27,161 1,197,874 70,861 Less imputed interest — (6,820 ) Total payments $ 1,197,874 $ 64,041
Debt Redemption Period for Outstanding Senior Notes	The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes: 2026 Senior Notes 2029 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage January 15, 2021 102.750% February 1, 2024 102.563% January 15, 2022 101.375% February 1, 2025 101.281% January 15, 2023 and thereafter 100.000% February 1, 2026 and thereafter 100.000%

Pension And Other Post-Retire_2

Pension And Other Post-Retirement Benefit Obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Compensation And Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	Information about the Celgar and Peace River defined benefit plans, in aggregate for the year ended December 31, 2021 was as follows: 2021 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2020 $ 128,854 $ 14,234 $ 143,088 Service cost 3,942 303 4,245 Interest cost 3,524 391 3,915 Benefit payments, net (4,231 ) (531 ) (4,762 ) Actuarial gains (6,701 ) (1,130 ) (7,831 ) Foreign currency exchange rate changes 587 72 659 Benefit obligation, December 31, 2021 125,975 13,339 139,314 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2020 110,476 — 110,476 Actual returns 9,315 — 9,315 Contributions 4,258 — 4,258 Benefit payments (4,098 ) — (4,098 ) Foreign currency exchange rate changes 1,430 — 1,430 Fair value of plan assets, December 31, 2021 121,381 — 121,381 Funded status, December 31, 2021 $ (4,594 ) $ (13,339 ) $ (17,933 ) Components of the net benefit cost recognized Service cost $ 3,942 $ 303 $ 4,245 Interest cost 3,524 391 3,915 Expected return on plan assets (5,216 ) — (5,216 ) Amortization of unrecognized items 678 (791 ) (113 ) Net benefit cost $ 2,928 $ (97 ) $ 2,831 Information about the Celgar and Peace River defined benefit plans, in aggregate for the year ended December 31, 2020 was as follows: 2020 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2019 $ 112,996 $ 13,252 $ 126,248 Service cost 3,404 258 3,662 Interest cost 3,367 385 3,752 Benefit payments (4,346 ) (479 ) (4,825 ) Actuarial losses 10,469 514 10,983 Foreign currency exchange rate changes 2,964 304 3,268 Benefit obligation, December 31, 2020 128,854 14,234 143,088 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2019 99,991 — 99,991 Actual returns 8,704 — 8,704 Contributions 3,685 479 4,164 Benefit payments (4,346 ) (479 ) (4,825 ) Foreign currency exchange rate changes 2,442 — 2,442 Fair value of plan assets, December 31, 2020 110,476 — 110,476 Funded status, December 31, 2020 $ (18,378 ) $ (14,234 ) $ (32,612 ) Components of the net benefit cost recognized Service cost $ 3,404 $ 258 $ 3,662 Interest cost 3,367 385 3,752 Expected return on plan assets (4,329 ) — (4,329 ) Amortization of unrecognized items 860 (892 ) (32 ) Net benefit cost $ 3,302 $ (249 ) $ 3,053
Estimated Future Benefit Payments	Estimated future benefit p ayments Pension Other Post-Retirement Benefits 2022 $ 4,985 $ 577 2023 $ 5,145 $ 603 2024 $ 5,389 $ 629 2025 $ 5,668 $ 652 2026 $ 5,882 $ 675 2027-2031 $ 31,931 $ 3,730
Summary of Key Assumptions	The weighted-average assumptions used to determine the benefit obligations at the measurement dates and the net benefit costs for the years ended December 31, 2021, 2020 and 2019 were as follows for Celgar’s defined benefit plan: December 31, 2021 2020 2019 Benefit obligations Discount rate 3.10 % 2.55 % 3.00 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Net benefit cost for year ended Discount rate 2.70 % 3.00 % 3.14 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Expected rate of return on plan assets 4.00 % 4.10 % 3.90 % The weighted-average assumptions used to determine the benefit obligations at the measurement dates and the net benefit costs for the years ended December 31, 2021, 2020 and 2019 were as follows for Peace River’s defined benefit plan: December 31, 2021 2020 2019 Benefit obligations Discount rate 3.10 % 2.70 % 3.20 % Rate of compensation increase 2.75 % 2.75 % 2.75 % Net benefit cost for year ended Discount rate 2.70 % 3.20 % 3.90 % Rate of compensation increase 2.75 % 2.75 % 2.75 % Expected rate of return on plan assets 4.93 % 4.68 % 5.12 %
Schedule of Assumed Health Care Cost Trend Rates	The assumed health care cost trend rates used to determine the other post-retirement benefit obligations as of December 31, 2021 and December 31, 2020 were as follows: December 31, 2021 2020 Health care cost trend rate assumed for next year 4.50% 5.00% Rate to which the cost trend is assumed to decline (ultimate trend rate) 4.50% 4.50% Year that the rate reaches the ultimate trend rate 2022 2022
Schedule of Defined Benefit Pension Plans' Assets Fair Value Measurements	The following table presents the Celgar and Peace River defined benefit pension plans’ assets fair value measurements as of December 31, 2021 under the fair value hierarchy: Fair value measurements as of December 31, 2021 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ — $ 64,057 $ — $ 64,057 Debt securities — 31,125 — 31,125 Buy-in annuity — — 24,458 24,458 Other — 1,741 — 1,741 Total assets $ — $ 96,923 $ 24,458 $ 121,381 The following table presents the Celgar and Peace River defined benefit pension plans’ assets fair value measurements as of December 31, 2020 under the fair value hierarchy: Fair value measurements as of December 31, 2020 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ — $ 49,485 $ — $ 49,485 Debt securities — 34,603 — 34,603 Buy-in annuity — — 26,017 26,017 Cash and other short-term assets — 13 — 13 Other — 358 — 358 Total assets $ — $ 84,459 $ 26,017 $ 110,476
Schedule of Change In Level 3 Fair value Measurements of Plan Assets	The change in Level 3 fair value measurements of plan assets for the years ended December 31, 2021 and 2020 was as follows: Buy-in Annuity Balance as of December 31, 2019 $ 25,343 Actual return on plan assets 710 Benefit payments (1,724 ) Actuarial losses 1,170 Effect of foreign currency exchange rate changes 518 Balance as of December 31, 2020 26,017 Actual return on plan assets 645 Benefit payments (1,789 ) Actuarial gains (545 ) Effect of foreign currency exchange rate changes 130 Balance as of December 31, 2021 $ 24,458
Schedule of Multiemployer Plan	Note 12. Pension and Other Post-Retirement Benefit Obligations (continued) Plan details for the years ended December 31, 2021, 2020 and 2019 were as follows: Provincially Registered Plan Expiration Date of Collective Bargaining Are the Company's Contributions Greater Than 5% of Total Contributions Legal name Number Agreement 2021 2020 2019 The Pulp and Paper Industry Pension Plan P085324 April 30, 2021 Yes No Yes

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of Income (Loss) Before Income Taxes	The components of i ncome (loss) before income taxes for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 U.S. $ (75,955 ) $ (22,284 ) $ (43,408 ) Foreign 336,522 11,145 52,995 $ 260,567 $ (11,139 ) $ 9,587
Schedule of Provision for Income Taxes Recognized in Consolidated Statements of Operations	Provision for income taxes recognized in the Consolidated Statements of Operations for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: Year Ended December 31, 2021 2020 2019 U.S. Federal and State current income tax provision $ 156 $ 1,782 $ 342 Foreign current income tax provision 70,632 19,563 26,757 Total current income tax provision 70,788 21,345 27,099 Foreign deferred income tax provision (recovery) 18,791 (15,249 ) (7,873 ) Total income tax provision $ 89,579 $ 6,096 $ 19,226
Reconciliation of Effective Tax Rate	Differences between the U.S. Federal statutory and the Company’s effective rates for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 U.S. Federal statutory rate 21% 21% 21% U.S. Federal statutory rate on income (loss) before income taxes $ (54,724 ) $ 2,339 $ (2,013 ) Tax differential on foreign income (25,361 ) (1,982 ) (5,368 ) Effect of foreign earnings (a) (7,524 ) (3,002 ) (13,747 ) Valuation allowance (12,048 ) (8,383 ) (11,643 ) Tax benefit of partnership structure 3,132 3,740 3,841 Non-taxable foreign subsidies 2,936 2,851 3,200 True-up of prior year taxes 5,616 (1,863 ) 6,031 Other (1,606 ) 204 473 Income tax provision $ (89,579 ) $ (6,096 ) $ (19,226 ) (a) Primarily due to the impact of the global intangible low-taxed income provision in the Tax Cuts and Jobs Act of 2017 .
Deferred Tax Assets and Liabilities	Note 13. Income Taxes (continued) Deferred income tax assets and liabilities as of December 31, 2021 and December 31, 2020 were comprised of the following: December 31, 2021 2020 German tax loss carryforwards $ 9,500 $ 29,378 U.S. tax loss carryforwards and credits 22,168 6,964 Canadian tax loss carryforwards 40,363 44,256 Australian tax loss carryforwards 5,090 3,783 Basis difference between income tax and financial reporting with respect to operating pulp mills (146,000 ) (145,858 ) Amortizable intangible assets (9,449 ) (10,504 ) Other long-term assets (5,646 ) (4,926 ) Debt (5,691 ) (6,553 ) Accounts payable and accrued expenses 5,382 1,621 Deferred pension liability 6,341 16,278 Finance leases 17,245 12,895 Scientific research and experimental development investment tax credit and expenditure pool 4,552 4,433 Other 5,389 3,702 (50,756 ) (44,531 ) Valuation allowance (43,190 ) (31,142 ) Net deferred income tax liability $ (93,946 ) $ (75,673 ) Comprised of: Deferred income tax asset $ 1,177 $ 1,355 Deferred income tax liability (95,123 ) (77,028 ) Net deferred income tax liability $ (93,946 ) $ (75,673 )
Summary of Investment Tax Credit and Other Tax Attributes Carryforwards	The following table details the scheduled expiration dates of the Company’s net operating loss, interest, investment tax credit and other tax attributes carryforwards as of December 31, 2021: Amount Expiration U.S. Interest $ 105,200 Indefinite Germany Net operating loss $ 8,100 Indefinite Interest $ 29,644 Indefinite Canada Net operating loss $ 152,700 2036 – 2041 Scientific research and experimental development investment tax credit $ 5,200 2030 – 2039 Scientific research and experimental development expenditure pool $ 3,000 Indefinite Australia Net operating loss $ 17,000 Indefinite
Summary of Changes in Valuation Allowance	Changes in valuation allowances related to net deferred tax assets for the years ended December 31, 2021 and 2020 were as follows: December 31, 2021 2020 Balance as of January 1 $ 31,142 $ 22,759 Additions (reversals) U.S. 14,770 1,734 Canada (2,851 ) 6,017 The impact of changes in foreign exchange rates 129 632 Balance as of December 31 $ 43,190 $ 31,142

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Stockholders Equity [Line Items]
Summary of Dividends Declared	The Company’s board of directors declared quarterly dividends during the years ended December 31, 2021 and 2020 as follows: Date Declared Dividend Per Common Share Amount February 16, 2021 $ 0.065 $ 4,289 April 29, 2021 0.065 4,293 July 29, 2021 0.065 4,292 October 28, 2021 0.065 4,293 $ 0.2600 $ 17,167 Date Declared Dividend Per Common Share Amount February 13, 2020 $ 0.1375 $ 9,047 April 30, 2020 0.0650 4,282 July 30, 2020 0.0650 4,281 October 29, 2020 0.0650 4,282 $ 0.3325 $ 21,892
Performance Share Units
Stockholders Equity [Line Items]
Summary of Share Activity	PSU activity during the year ended December 31, 2021 was as follows: Number of PSUs Weighted Average Grant Date Fair Value Per Unit Outstanding as of January 1, 2021 2,364,848 $ 12.61 Granted 1,007,912 13.72 Vested and issued (120,271 ) 12.75 Forfeited (498,017 ) 12.75 Outstanding as of December 31, 2021 2,754,472 $ 12.98
Restricted Stock
Stockholders Equity [Line Items]
Summary of Share Activity	Restricted share activity during the year ended December 31, 2021 was as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Per Share Outstanding as of January 1, 2021 68,140 $ 8.07 Granted 49,195 14.84 Vested (68,140 ) 8.07 Outstanding as of December 31, 2021 49,195 $ 14.84

Net Income (Loss) Per Common _2

Net Income (Loss) Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share	The reconciliation of basic and diluted net income (loss) per common share for the years ended December 31, 2021, 2020 and 2019 was as follows: For the Year Ended December 31, 2021 2020 2019 Net income (loss) Basic and diluted $ 170,988 $ (17,235 ) $ (9,639 ) Net income (loss) per common share Basic $ 2.59 $ (0.26 ) $ (0.15 ) Diluted $ 2.58 $ (0.26 ) $ (0.15 ) Weighted average number of common shares outstanding: Basic (a) 65,944,494 65,768,485 65,553,196 Effect of dilutive instruments: PSUs 312,455 — — Restricted shares 27,054 — — Diluted 66,284,003 65,768,485 65,553,196 (a) For the year ended December 31, 2021, the basic weighted average number of common shares outstanding
Anti-Dilutive Instruments Excluded from Calculation of Net Income (Loss) Per Common Share	Instruments excluded from the calculation of net income (loss) per common share because they were anti-dilutive for the years ended December 31, 2021, 2020 and 2019 were as follows: For the Year Ended December 31, 2021 2020 2019 PSUs — 2,364,848 1,764,976 Restricted shares — 68,140 31,405

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Schedule of Change in Accumulated Other Comprehensive Loss by Components	The change in accumulated other comprehensive loss by component (net of tax) for the years ended December 31, 2021 and 2020 was as follows: Foreign Currency Translation Adjustment Defined Benefit Pension and Other Post- Retirement Benefit Items Total Balance as of December 31, 2019 $ (114,709 ) $ (1,851 ) $ (116,560 ) Other comprehensive income (loss) before reclassifications 95,131 (6,114 ) 89,017 Amounts reclassified from accumulated other comprehensive loss — (32 ) (32 ) Other comprehensive income (loss), net of taxes 95,131 (6,146 ) 88,985 Balance as of December 31, 2020 (19,578 ) (7,997 ) (27,575 ) Other comprehensive income (loss) before reclassifications (77,939 ) 14,834 (63,105 ) Amounts reclassified from accumulated other comprehensive loss — (113 ) (113 ) Other comprehensive income (loss), net of taxes (77,939 ) 14,721 (63,218 ) Balance as of December 31, 2021 $ (97,517 ) $ 6,724 $ (90,793 )

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Information about certain segment data for the years ended December 31, 2021, 2020 and 2019, was as follows: December 31, 2021 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 Operating income (loss) $ 251,724 $ 108,466 $ (13,607 ) $ 346,583 Depreciation and amortization $ 115,293 $ 14,858 $ 2,048 $ 132,199 Purchase of property, plant and equipment $ 139,312 $ 18,002 $ 2,126 $ 159,440 Total assets (a) $ 1,882,078 $ 258,965 $ 210,189 $ 2,351,232 Revenues by major products Pulp $ 1,389,439 $ — $ — $ 1,389,439 Lumber — 293,166 2,391 295,557 Energy and chemicals 93,654 11,547 6,690 111,891 Wood residuals — 6,368 — 6,368 Total revenues $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 Revenues by geographical markets (b) U.S. $ 183,198 $ 156,762 $ 5,227 $ 345,187 Foreign countries Germany 459,725 62,986 — 522,711 China 375,891 1,245 — 377,136 Other countries 464,279 90,088 3,854 558,221 1,299,895 154,319 3,854 1,458,068 Total revenues $ 1,483,093 $ 311,081 $ 9,081 $ 1,803,255 (a) Total assets for the pulp segment includes the Company’s $49,651 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship-to location provided by the customer. Note 18. Segment Information (continued) December 31, 2020 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 Operating income (loss) $ 37,952 $ 34,704 $ (8,927 ) $ 63,729 Depreciation and amortization $ 115,945 $ 12,212 $ 764 $ 128,921 Purchase of property, plant and equipment $ 53,734 $ 23,788 $ 996 $ 78,518 Total assets (a) $ 1,740,233 $ 112,267 $ 276,626 $ 2,129,126 Revenues by major products Pulp $ 1,130,302 $ — $ — $ 1,130,302 Lumber — 180,769 — 180,769 Energy and chemicals 90,342 10,619 4,847 105,808 Wood residuals — 6,261 — 6,261 Total revenues $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 Revenues by geographical markets (b) U.S. $ 149,816 $ 93,802 $ 1,734 $ 245,352 Foreign countries Germany 336,346 50,945 — 387,291 China 364,527 3,037 — 367,564 Other countries 369,955 49,865 3,113 422,933 1,070,828 103,847 3,113 1,177,788 Total revenues $ 1,220,644 $ 197,649 $ 4,847 $ 1,423,140 (a) Total assets for the pulp segment includes the Company’s $46,429 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship – to location provided by the customer. December 31, 2019 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 Operating income (loss) $ 90,583 $ 7,349 $ (13,929 ) $ 84,003 Depreciation and amortization $ 117,108 $ 7,966 $ 1,320 $ 126,394 Purchase of property, plant and equipment $ 103,066 $ 28,425 $ 543 $ 132,034 Total assets (a) $ 1,782,105 $ 83,102 $ 200,513 $ 2,065,720 Revenues by major products Pulp $ 1,370,742 $ — $ — $ 1,370,742 Lumber — 142,243 — 142,243 Energy and chemicals 86,381 9,721 7,351 103,453 Wood residuals — 7,973 — 7,973 Total revenues $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 Revenues by geographical markets (b) U.S. $ 168,197 $ 54,098 $ — $ 222,295 Foreign countries Germany 419,472 53,734 — 473,206 China 430,508 — — 430,508 Other countries 438,946 52,105 7,351 498,402 1,288,926 105,839 7,351 1,402,116 Total revenues $ 1,457,123 $ 159,937 $ 7,351 $ 1,624,411 (a) Total assets for the pulp segment includes the Company’s $53,122 investment in joint ventures, primarily for the CPP mill (b) Sales are attributed to countries based on the ship-to location provided by the customer.
Schedule of Long Lived Assets by Geographic Area	The Company’s long-lived assets by geographic area based on location of the asset as of December 31, 2021 and December 31, 2020 were as follows: December 31, 2021 2020 U.S. $ 51,136 $ — Foreign countries Germany 660,745 699,408 Canada 406,985 390,542 Australia 16,765 19,790 1,084,495 1,109,740 $ 1,135,631 $ 1,109,740

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Estimated Fair Values of the Outstanding Debt	The estimated fair values of the Company’s outstanding debt under the fair value hierarchy as of December 31, 2021 and December 31, 2020 were as follows: Fair value measurements as of December 31, 2021 using: Description Level 1 Level 2 Level 3 Total Revolving credit facilities $ — $ 22,874 $ — $ 22,874 Senior notes — 1,197,449 — 1,197,449 $ — $ 1,220,323 $ — $ 1,220,323 Fair value measurements as of December 31, 2020 using: Description Level 1 Level 2 Level 3 Total Revolving credit facilities $ — $ 54,980 $ — $ 54,980 Senior notes — 1,131,229 — 1,131,229 $ — $ 1,186,209 $ — $ 1,186,209

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Components of Lease Expense	Note 20. Lease Commitments (continued) The components of lease expense for the years ended December 31, 2021, 2020 and 2019 were as follows: Year Ended December 31, 2021 2020 2019 Lease cost: Operating lease cost $ 4,086 $ 3,712 $ 3,322 Finance lease cost: Amortization of right-of-use assets 7,481 4,963 3,768 Interest on lease liabilities 1,635 1,460 1,370 Total lease cost $ 13,202 $ 10,135 $ 8,460
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases for the years ended December 31, 2021, 2020 and 2019 was as follows: Year Ended December 31, 2021 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flow payments for operating leases $ 4,086 $ 3,712 $ 3,322 Operating cash flow payments for finance leases $ 1,635 $ 1,460 $ 1,370 Financing cash flow payments for finance leases $ 7,850 $ 4,636 $ 3,344
Other Information Related to Leases	Other information related to leases for the years ended December 31, 2021, 2020 and 2019 was as follows: Year Ended December 31, 2021 2020 2019 Weighted average remaining lease term: Operating leases 5 years 6 years 7 years Finance leases 8 years 9 years 10 years Weighted average discount rate: Operating leases 6 % 6 % 7 % Finance leases 3 % 3 % 4 %
Supplemental Balance Sheet Information Related to Leases	Note 20. Lease Commitments (continued) Supplemental balance sheet information related to leases as of December 31, 2021 and December 31, 2020 was as follows: December 31, 2021 2020 Operating Leases Operating lease right-of-use assets $ 9,712 $ 13,251 Other current liabilities $ 3,192 $ 3,318 Operating lease liabilities 6,574 9,933 Total operating lease liabilities $ 9,766 $ 13,251 Finance Leases Property and equipment, gross $ 87,719 $ 65,418 Accumulated depreciation (24,850 ) (19,353 ) Property and equipment, net $ 62,869 $ 46,065 Other current liabilities $ 8,467 $ 5,364 Long-term debt 55,574 41,329 Total finance lease liabilities $ 64,041 $ 46,693
Schedule of Maturities of Operating Lease Liabilities	M aturities of operating lease liabilities as of December 31, 2021 were as follows: Operating Leases 2022 $ 3,732 2023 2,725 2024 1,575 2025 879 2026 662 Thereafter 1,986 Total lease payments 11,559 Less: imputed interest (1,793 ) Total lease liability $ 9,766

The Company and Summary of Si_3

The Company and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021mill
Summary Of Significant Accounting Policies [Line Items]
Number of pulp mills	4
Ownership percentage in subsidiaries	100.00%
Net actuarial gain (loss) percent that is exceeded for amortization	10.00%
Canada
Summary Of Significant Accounting Policies [Line Items]
Number of pulp mills	2
Germany
Summary Of Significant Accounting Policies [Line Items]
Number of pulp mills	2
Number of sawmills	1
MPR - CPP
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	50.00%

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Aug. 05, 2021	Oct. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Payments to acquire business for cash			$ 51,258	$ 0	$ 6,380
Mercer Mass Timber
Business Acquisition [Line Items]
Date of acquisition	Aug. 5, 2021
Payments to acquire business facility	$ 51,258
Acquisition related costs	$ 1,258
Mercer Forestry Services Ltd
Business Acquisition [Line Items]
Payments to acquire business for cash		$ 6,938
Acquisition related costs					$ 265

Business Interruption Insuran_2

Business Interruption Insurance - Additional Information (Details) - 12 months ended Dec. 31, 2021 $ in Thousands, $ in Millions	USD ($)	CAD ($)	CAD ($)
Extraordinary And Unusual Items [Abstract]
Business interruption insurance claim settlement amount	$ 34,303	$ 43
Insurance settlement receivable	$ 31,551		$ 40

Other Income - Schedule of Othe

Other Income - Schedule of Other Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income And Expenses [Abstract]
Foreign exchange gain (loss)	$ 12,674	$ (13,797)	$ 1,080
Gain on sale of investments	0	17,540	0
Other	1,725	2,135	5,004
Other income	$ 14,399	$ 5,878	$ 6,084

Other Income - Schedule of Ot_2

Other Income - Schedule of Other Income (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income And Expenses [Abstract]
Purchase of equity security investments	$ 0	$ 9,370	$ 0
Sale of equity security investments	0	26,910	0
Gain on sale of investments	$ 0	$ 17,540	$ 0

Accounts Receivable, Net - Sche

Accounts Receivable, Net - Schedule of Accounts Receivable Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable [Line Items]
Accounts receivable, net	$ 345,345	$ 227,055
Insurance claims	37,953
Trade accounts receivable
Accounts Receivable [Line Items]
Accounts receivable, net	293,498	210,963
Other non-trade receivables
Accounts Receivable [Line Items]
Accounts receivable, net	$ 13,894	$ 16,092

Accounts Receivable, Net - Sc_2

Accounts Receivable, Net - Schedule of Accounts Receivable Net (Parenthetical) (Details) $ in Thousands, $ in Millions	Dec. 31, 2021USD ($)	Dec. 31, 2021CAD ($)	Dec. 31, 2020USD ($)
Accounts Receivable [Line Items]
Insurance claims receivable	$ 37,953
Peace River Boiler Claims and Business Interruption Claim
Accounts Receivable [Line Items]
Insurance claims receivable	31,551	$ 40
Property Claims
Accounts Receivable [Line Items]
Insurance claims receivable	6,402	$ 8.1
Trade accounts receivable
Accounts Receivable [Line Items]
Allowance	$ 845		$ 552

Inventories - Components of Inv

Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory Net [Abstract]
Raw materials	$ 106,434	$ 74,526
Finished goods	140,829	88,256
Spare parts and other	109,468	108,914
Inventories	$ 356,731	$ 271,696

Inventories - Additional Inform

Inventories - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Inventory [Line Items]
Inventory impairment changes	$ 0	$ 25,998,000	$ 9,200,000
Inventory impairment changes		0
Canadian Mills
Inventory [Line Items]
Inventory impairment changes	$ 0	$ 25,998,000

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,449,907	$ 2,390,810
Less: accumulated depreciation	(1,314,276)	(1,281,070)
Property, plant and equipment, net	1,135,631	1,109,740
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	61,067	63,610
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 309,039	290,150
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	10 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	50 years
Production and other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,079,801	$ 2,037,050
Production and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	5 years
Production and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	25 years

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Proceeds from an insurer related to property damage claim	$ 21,540
Government grants received amount	9,333
Unamortized Government Grants	164,439	$ 186,330
Amortization expense related to government grants	19,855	18,369	$ 19,084
Asset retirement obligation	$ 12,529	$ 10,005

Amortizable Intangible Assets_3

Amortizable Intangible Assets, Net - Schedule of Amortizable Intangible Assets Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Intangible assets [Line Items]
Gross Carrying Amount	$ 84,137	$ 85,867
Accumulated Amortization	(36,235)	(34,296)
Net	47,902	51,571
Energy Sales Agreement
Intangible assets [Line Items]
Gross Carrying Amount	17,047	18,470
Accumulated Amortization	(7,327)	(6,253)
Net	$ 9,720	12,217
Useful Lives (Years)	11 years
Timber cutting rights
Intangible assets [Line Items]
Gross Carrying Amount	$ 39,714	39,546
Accumulated Amortization	(4,051)	(2,714)
Net	$ 35,663	36,832
Useful Lives (Years)	30 years
Software and Other Intangible Assets
Intangible assets [Line Items]
Gross Carrying Amount	$ 27,376	27,851
Accumulated Amortization	(24,857)	(25,329)
Net	$ 2,519	$ 2,522
Useful Lives (Years)	5 years

Amortizable Intangible Assets_4

Amortizable Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets	$ 4,767	$ 4,414	$ 5,930

Amortizable Intangible Assets_5

Amortizable Intangible Assets, Net - Schedule of Amortization Expense Related to Intangible Assets (Details) $ in Thousands	Dec. 31, 2021USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2022	$ 3,934
2023	3,563
2024	3,324
2025	3,076
2026	$ 2,933

Other Long-Term Assets - Schedu

Other Long-Term Assets - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Sandalwood tree plantations	$ 30,731	$ 28,600
Other	7,987	3,328
Other long-term assets	$ 38,718	$ 31,928

Accounts Payable and Other - Sc

Accounts Payable and Other - Schedule of Accounts Payable and Other (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Trade payables	$ 58,451	$ 42,730
Accrued expenses	76,409	60,622
Interest payable	26,506	33,241
Income tax payable	56,241	23,256
Payroll-related accruals	20,707	18,993
Wastewater fee	19,248	13,407
Finance lease liability	8,467	5,364
Operating lease liability	3,192	3,318
Government grants	7,302	7,161
Other	5,784	2,902
Accounts payable and other	$ 282,307	$ 210,994

Accounts Payable and Other - _2

Accounts Payable and Other - Schedule of Accounts Payable and Other (Parenthetical) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Reductions to wastewater fees	$ 0	$ 0	$ 20,859,000

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt and finance lease obligations, gross	$ 1,261,915	$ 1,201,673
Less: unamortized premium and issuance costs, net	(15,903)	(9,686)
Less: finance lease liability due within one year	(8,467)	(5,364)
Long-term debt, net	$ 1,237,545	1,186,623
5.500% Senior Notes
Debt Instrument [Line Items]
Maturity	2026
Long-term debt and finance lease obligations, gross	$ 300,000	300,000
5.125% Senior Notes
Debt Instrument [Line Items]
Maturity	2029
Long-term debt and finance lease obligations, gross	$ 875,000	0
6.500% Senior Notes
Debt Instrument [Line Items]
Maturity	2024
Long-term debt and finance lease obligations, gross	$ 0	250,000
7.375% Senior Notes
Debt Instrument [Line Items]
Maturity	2025
Long-term debt and finance lease obligations, gross	$ 0	550,000
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Maturity	2023
Long-term debt and finance lease obligations, gross	$ 0	0
Peace River Credit Facility - C$60 Million
Debt Instrument [Line Items]
Maturity	2024
Long-term debt and finance lease obligations, gross	$ 22,874	21,992
Celgar Credit Facility - C$60.0 Million
Debt Instrument [Line Items]
Maturity	2023
Long-term debt and finance lease obligations, gross	$ 0	32,988
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Long-term debt and finance lease obligations, gross	0	0
Finance Lease Liability
Debt Instrument [Line Items]
Long-term debt and finance lease obligations, gross	$ 64,041	$ 46,693

Debt - Schedule of Debt (Parent

Debt - Schedule of Debt (Parenthetical) (Details)	1 Months Ended		12 Months Ended
	Jan. 31, 2022CAD ($)	Jan. 31, 2021USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2021CAD ($)	Dec. 31, 2021EUR (€)
Debt Instrument [Line Items]
Long-term debt			$ 1,237,545,000	$ 1,186,623,000
Loss on early extinguishment of debt			(30,368,000)	$ 0	$ (4,750,000)
Long-term Debt			$ 1,197,874,000
2026 Senior Notes
Debt Instrument [Line Items]
Debt, interest rate			5.50%			5.50%	5.50%
Debt, maturity date			Jan. 15, 2026
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €							€ 200,000,000
Debt, description of variable basis spread			Euribor
Debt, amount of debt supporting bank guarantees			$ 11,906,000				10,500,000
Line of credit facility, remaining borrowing capacity			$ 214,614,000				€ 189,500,000
German Joint RCF - EUR 200 Million | Minimum
Debt Instrument [Line Items]
Debt, variable basis spread			1.05%
German Joint RCF - EUR 200 Million | Maximum
Debt Instrument [Line Items]
Debt, variable basis spread			2.00%
MPR Credit Facility - C$60 Million
Debt Instrument [Line Items]
Debt, interest rate			2.45%			2.45%	2.45%
Line of credit, maximum borrowing capacity						$ 60,000,000
Line of credit facility, remaining borrowing capacity			$ 23,730,000			30,100,000
Long-term Debt			22,874,000			29,000,000
Line of credit, letters of credit outstanding, amount			$ 722,000			900,000
MPR Credit Facility - C$60 Million | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread			designated prime rate
MPR Credit Facility - C$60 Million | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, description of variable basis spread			banker’s acceptance
MPR Credit Facility - C$60 Million | U S Dollar Borrowings Rate Option1a
Debt Instrument [Line Items]
Debt, description of variable basis spread			federal funds rate
Debt, variable basis spread			0.50%
MPR Credit Facility - C$60 Million | US Dollar Borrowings Rate Option 1b
Debt Instrument [Line Items]
Debt, description of variable basis spread			LIBOR
Debt, variable basis spread			1.00%
MPR Credit Facility - C$60 Million | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread			LIBOR
MPR Credit Facility - C$60 Million | US Dollar Borrowings Rate Option 1c
Debt Instrument [Line Items]
Debt, description of variable basis spread			bank’s applicable reference rate for U.S. dollar loans
MPR Credit Facility - C$60 Million | Minimum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread			1.25%
MPR Credit Facility - C$60 Million | Minimum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			1.25%
MPR Credit Facility - C$60 Million | Maximum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread			1.50%
MPR Credit Facility - C$60 Million | Maximum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			1.50%
Celgar Credit Facility - C$60.0 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity						60,000,000
Debt, face amount						60,000,000
Line of credit facility, remaining borrowing capacity			$ 46,970,000			59,500,000
Line of credit, letters of credit outstanding, amount			$ 356,000			500,000
Celgar Credit Facility - C$60.0 Million | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread			designated prime rate
Celgar Credit Facility - C$60.0 Million | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, description of variable basis spread			banker's acceptance
Celgar Credit Facility - C$60.0 Million | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread			LIBOR
Celgar Credit Facility - C$60.0 Million | Minimum | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			(0.125%)
Celgar Credit Facility - C$60.0 Million | Minimum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread			1.25%
Celgar Credit Facility - C$60.0 Million | Minimum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			1.25%
Celgar Credit Facility - C$60.0 Million | Maximum | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			0.125%
Celgar Credit Facility - C$60.0 Million | Maximum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread			1.625%
Celgar Credit Facility - C$60.0 Million | Maximum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread			1.625%
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €							€ 2,600,000
Debt, description of variable basis spread			three-month Euribor
Debt, variable basis spread			2.50%
Debt, amount of debt supporting bank guarantees			$ 2,890,000				€ 2,600,000
Line of credit facility, remaining borrowing capacity			$ 0
2029 Senior Notes
Debt Instrument [Line Items]
Debt, interest rate		5.125%
Debt, face amount		$ 875,000,000
Debt, maturity date		Feb. 1, 2029
Long-term debt		$ 860,517
Loss on early extinguishment of debt		$ 30,368
Canadian Joint RCF - C$160 Million | Subsequent Event
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 160,000,000
Line of credit, new facility term	5 years
Canadian Joint RCF - C$160 Million | Canadian Dollar Borrowings Rate Option 1 | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	designated prime rate
Canadian Joint RCF - C$160 Million | U S Dollar Borrowings Rate Option1a | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	federal funds rate
Debt, variable basis spread	0.50%
Canadian Joint RCF - C$160 Million | US Dollar Borrowings Rate Option 1b | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	Adjusted Term SOFR for a one month tenor
Debt, variable basis spread	1.00%
Canadian Joint RCF - C$160 Million | US Dollar Borrowings Rate Option 1c | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	bank’s applicable reference rate for U.S. dollar loans
Canadian Joint RCF - C$160 Million | Minimum | Canadian Dollar Borrowings Rate Option 2 | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	Canadian dollar banker’s acceptance
Debt, variable basis spread	1.20%
Canadian Joint RCF - C$160 Million | Minimum | US Dollar Borrowings Rate Option 2 | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	Adjusted Term SOFR
Debt, variable basis spread	1.20%
Canadian Joint RCF - C$160 Million | Maximum | Canadian Dollar Borrowings Rate Option 2 | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	Canadian dollar banker’s acceptance
Debt, variable basis spread	1.45%
Canadian Joint RCF - C$160 Million | Maximum | US Dollar Borrowings Rate Option 2 | Subsequent Event
Debt Instrument [Line Items]
Debt, description of variable basis spread	Adjusted Term SOFR
Debt, variable basis spread	1.45%
Peace River Credit Facility - C$60 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity						$ 60,000,000
5.125% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate			5.125%			5.125%	5.125%
6.500% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate			6.50%			6.50%	6.50%
7.375% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate			7.375%			7.375%	7.375%
Senior Notes | Minimum
Debt Instrument [Line Items]
Senior Notes, redemption notice days			10 days
Senior Notes | Maximum
Debt Instrument [Line Items]
Senior Notes, redemption notice days			60 days

Debt - Principal Maturities of

Debt - Principal Maturities of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Senior Notes and Credit Arrangements
2022	$ 0
2023	0
2024	22,874
2025	0
2026	300,000
Thereafter	875,000
Total payments	1,197,874
Finance Leases
2022	9,861
2023	9,620
2024	8,787
2025	7,943
2026	7,489
Thereafter	27,161
Total, Finance Leases	70,861
Less imputed interest	(6,820)
Total payments	$ 64,041	$ 46,693

Debt - Debt Redemption Period f

Debt - Debt Redemption Period for Senior Notes (Details)	12 Months Ended
	Dec. 31, 2021
2026 Senior Notes | January 15, 2021
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.75%
2026 Senior Notes | January 15, 2022
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.375%
2026 Senior Notes | January 15, 2023 and thereafter
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
2029 Senior Notes | February 1, 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.563%
2029 Senior Notes | February 1, 2025
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.281%
2029 Senior Notes | February 1, 2026 and thereafter
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefit Obligations - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	$ 143,088	$ 126,248
Service cost	4,245	3,662
Interest cost	3,915	3,752
Benefit payments, net	(4,762)	(4,825)
Actuarial losses (gains)	(7,831)	10,983
Foreign currency exchange rate changes	659	3,268
Benefit obligation, ending balance	139,314	143,088
Fair value of plan assets, beginning balance	110,476	99,991
Actual returns	9,315	8,704
Contributions	4,258	4,164
Benefit payments	(4,098)	(4,825)
Foreign currency exchange rate changes	1,430	2,442
Fair value of plan assets, ending balance	121,381	110,476
Funded status	(17,933)	(32,612)
Expected return on plan assets	(5,216)	(4,329)
Amortization of unrecognized items	(113)	(32)
Net benefit cost	2,831	3,053
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	128,854	112,996
Service cost	3,942	3,404
Interest cost	3,524	3,367
Benefit payments, net	(4,231)	(4,346)
Actuarial losses (gains)	(6,701)	10,469
Foreign currency exchange rate changes	587	2,964
Benefit obligation, ending balance	125,975	128,854
Fair value of plan assets, beginning balance	110,476	99,991
Actual returns	9,315	8,704
Contributions	4,258	3,685
Benefit payments	(4,098)	(4,346)
Foreign currency exchange rate changes	1,430	2,442
Fair value of plan assets, ending balance	121,381	110,476
Funded status	(4,594)	(18,378)
Expected return on plan assets	(5,216)	(4,329)
Amortization of unrecognized items	678	860
Net benefit cost	2,928	3,302
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	14,234	13,252
Service cost	303	258
Interest cost	391	385
Benefit payments, net	(531)	(479)
Actuarial losses (gains)	(1,130)	514
Foreign currency exchange rate changes	72	304
Benefit obligation, ending balance	13,339	14,234
Contributions		479
Benefit payments		(479)
Funded status	(13,339)	(14,234)
Amortization of unrecognized items	(791)	(892)
Net benefit cost	$ (97)	$ (249)

Pension and Other Post-Retire_4

Pension and Other Post-Retirement Benefit Obligations - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 4,034
Defined contribution plan, employer discretionary contribution amount	1,768	$ 1,634	$ 1,400
Multiemployer plan, contributions by employer	$ 2,370	$ 1,933	$ 2,203
Celgar | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	80.00%
Celgar | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	20.00%

Pension and Other Post-Retire_5

Pension and Other Post-Retirement Benefit Obligations - Estimated Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2021USD ($)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2022	$ 4,985
2023	5,145
2024	5,389
2025	5,668
2026	5,882
2027-2031	31,931
Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2022	577
2023	603
2024	629
2025	652
2026	675
2027-2031	$ 3,730

Pension and Other Post-Retire_6

Pension and Other Post-Retirement Benefit Obligations - Summary of Key Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Celgar
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation, Discount rate	3.10%	2.55%	3.00%
Benefit obligations, Rate of compensation increase	2.50%	2.50%	2.50%
Net benefit cost, Discount rate	2.70%	3.00%	3.14%
Net benefit cost, Rate of compensation increase	2.50%	2.50%	2.50%
Net benefit cost, Expected rate of return on plan assets	4.00%	4.10%	3.90%
Peace River's
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation, Discount rate	3.10%	2.70%	3.20%
Benefit obligations, Rate of compensation increase	2.75%	2.75%	2.75%
Net benefit cost, Discount rate	2.70%	3.20%	3.90%
Net benefit cost, Rate of compensation increase	2.75%	2.75%	2.75%
Net benefit cost, Expected rate of return on plan assets	4.93%	4.68%	5.12%

Pension and Other Post-Retire_7

Pension and Other Post-Retirement Benefit Obligations - Schedule of Assumed Health Care Cost Trend Rates (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Health care cost trend rate assumed for next year	4.50%	5.00%
Rate to which the cost trend is assumed to decline (ultimate trend rate)	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2022	2022

Pension and Other Post-Retire_8

Pension and Other Post-Retirement Benefit Obligations - Schedule of Defined Benefit Pension Plans' Assets Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	$ 121,381	$ 110,476	$ 99,991
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	96,923	84,459
Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	24,458	26,017	$ 25,343
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	64,057	49,485
Equity Securities | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Equity Securities | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	64,057	49,485
Equity Securities | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	31,125	34,603
Debt Securities | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Debt Securities | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	31,125	34,603
Debt Securities | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Buy-in Annuity
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	24,458	26,017
Buy-in Annuity | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Buy-in Annuity | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Buy-in Annuity | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	24,458	26,017
Cash and Other Short-Term Assets
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements		13
Cash and Other Short-Term Assets | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements		0
Cash and Other Short-Term Assets | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements		13
Cash and Other Short-Term Assets | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements		0
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	1,741	358
Other | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Other | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	1,741	358
Other | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	$ 0	$ 0

Pension and Other Post-Retire_9

Pension and Other Post-Retirement Benefit Obligations - Schedule of Change In Level 3 Fair value Measurements of Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets, beginning balance	$ 110,476	$ 99,991
Actual returns	9,315	8,704
Benefit payments	(4,098)	(4,825)
Actuarial losses (gains)	(7,831)	10,983
Foreign currency exchange rate changes	1,430	2,442
Fair value of plan assets, ending balance	121,381	110,476
Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets, beginning balance	26,017	25,343
Actual returns	645	710
Benefit payments	(1,789)	(1,724)
Actuarial losses (gains)	(545)	1,170
Foreign currency exchange rate changes	130	518
Fair value of plan assets, ending balance	$ 24,458	$ 26,017

Pension and Other Post-Retir_10

Pension and Other Post-Retirement Benefit Obligations - Schedule of Multiemployer Plan (Details) - The Pulp and Paper Industry Pension Plan	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Multiemployer Plans [Line Items]
Provincially Registered Plan Number	P085324
Expiration Date of Collective Bargaining Agreement	Apr. 30, 2021
Are the Company's Contributions Greater Than 5% of Total Contributions	true	false	true

Income Taxes - Components of In

Income Taxes - Components of Income (Loss) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income from Continuing Operations before Income Taxes, U.S.	$ (75,955)	$ (22,284)	$ (43,408)
Income from Continuing Operations before Income Taxes, Foreign	336,522	11,145	52,995
Income (loss) before income taxes	$ 260,567	$ (11,139)	$ 9,587

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision for Income Taxes Recognized in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. Federal and State current income tax provision	$ 156	$ 1,782	$ 342
Foreign current income tax provision	70,632	19,563	26,757
Total current income tax provision	70,788	21,345	27,099
Foreign deferred income tax provision (recovery)	18,791	(15,249)	(7,873)
Total income tax provision	$ 89,579	$ 6,096	$ 19,226

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021USD ($)Entity	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Income tax examination, description	The German tax authorities have completed examinations up to and including the 2017 tax year for all but three German entities. For these three entities the German tax authorities have completed examinations up to and including the 2013 tax year. The Company is generally not subject to U.S. or Canadian income tax examinations for tax years before 2018 and 2017, respectively.
Recognized interest and penalties related to unrecognized tax benefit	$ 0	$ 0	$ 0
Unrecognized tax benefits	0	$ 0
Undistributed Earnings of Foreign Subsidiaries	$ 364,316,000
German Tax Authorities | Foreign Country
Income tax examinations not completed, number of entities | Entity	3

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
U.S. Federal statutory rate	21.00%	21.00%	21.00%
U.S. Federal statutory rate on income (loss) before income taxes	$ (54,724)	$ 2,339	$ (2,013)
Tax differential on foreign income	(25,361)	(1,982)	(5,368)
Effect of foreign earnings	(7,524)	(3,002)	(13,747)
Valuation allowance	(12,048)	(8,383)	(11,643)
Tax benefit of partnership structure	3,132	3,740	3,841
Non-taxable foreign subsidies	2,936	2,851	3,200
True-up of prior year taxes	5,616	(1,863)	6,031
Other	(1,606)	204	473
Income tax provision	$ (89,579)	$ (6,096)	$ (19,226)

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. tax loss carryforwards and credits	$ 22,168	$ 6,964
Basis difference between income tax and financial reporting with respect to operating pulp mills	(146,000)	(145,858)
Amortizable intangible assets	(9,449)	(10,504)
Other long-term assets	(5,646)	(4,926)
Debt	(5,691)	(6,553)
Accounts payable and accrued expenses	5,382	1,621
Deferred pension liability	6,341	16,278
Finance leases	17,245	12,895
Scientific research and experimental development investment tax credit and expenditure pool	4,552	4,433
Other	5,389	3,702
Total gross deferred tax liability	(50,756)	(44,531)
Valuation allowance	(43,190)	(31,142)	$ (22,759)
Net deferred income tax liability	(93,946)	(75,673)
Deferred income tax asset	1,177	1,355
Deferred income tax liability	(95,123)	(77,028)
Federal Ministry of Finance, Germany
Foreign tax loss carryforwards	9,500	29,378
Canada Revenue Agency
Foreign tax loss carryforwards	40,363	44,256
Australian Taxation Office
Foreign tax loss carryforwards	$ 5,090	$ 3,783

Income Taxes - Summary of Inves

Income Taxes - Summary of Investment Tax Credit and Other Tax Attributes Carryforwards (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
United States
Income Taxes Disclosures [Line Items]
Interest	$ 105,200
Other Tax Carryforward Expiration Period	Indefinite
German Tax Authorities
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 8,100
Interest	$ 29,644
Tax Loss Carryforwards Expiration Period	Indefinite
Other Tax Carryforward Expiration Period	Indefinite
Canada Revenue Agency
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 152,700
Scientific research and experimental development investment tax credit carryforwards	5,200
Scientific research and experimental development expenditure pool carryforwards	$ 3,000
Scientific research and experimental development expenditure pool expiration period	Indefinite
Canada Revenue Agency | Minimum
Income Taxes Disclosures [Line Items]
Tax Loss Carryforwards Expiration Period	2036
Tax Credits Carryforward, Expiration Year	2030
Canada Revenue Agency | Maximum
Income Taxes Disclosures [Line Items]
Tax Loss Carryforwards Expiration Period	2041
Tax Credits Carryforward, Expiration Year	2039
Australian Taxation Office
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 17,000
Tax Loss Carryforwards Expiration Period	Indefinite

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Valuation Allowance [Line Items]
Valuation allowance, beginning of period	$ 31,142	$ 22,759
The impact of changes in foreign exchange rates	129	632
Valuation allowance, end of period	43,190	31,142
United States
Valuation Allowance [Line Items]
Valuation Allowance - increase (decrease) amount	14,770	1,734
Canada
Valuation Allowance [Line Items]
Valuation Allowance - increase (decrease) amount	$ (2,851)	$ 6,017

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Date Declared	Oct. 28, 2021	Jul. 29, 2021	Apr. 29, 2021	Feb. 16, 2021	Oct. 29, 2020	Jul. 30, 2020	Apr. 30, 2020	Feb. 13, 2020
Dividends declared per common share	$ 0.065	$ 0.065	$ 0.065	$ 0.065	$ 0.0650	$ 0.0650	$ 0.0650	$ 0.1375	$ 0.2600	$ 0.3325	$ 0.5375
Dividends, Common Stock, Cash	$ 4,293	$ 4,292	$ 4,293	$ 4,289	$ 4,282	$ 4,281	$ 4,282	$ 9,047	$ 17,167	$ 21,892	$ 35,279

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 17, 2022	May 31, 2019	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share			$ 0.065	$ 0.065	$ 0.065	$ 0.065	$ 0.0650	$ 0.0650	$ 0.0650	$ 0.1375	$ 0.2600	$ 0.3325	$ 0.5375
Preferred shares, authorized			50,000,000				50,000,000				50,000,000	50,000,000
Preferred shares, par value			$ 1								$ 1
Preferred shares, issued			0								0
Stock repurchase program expiration date		May 31, 2020
Payments for repurchase of common stock											$ 0	$ 162	$ 754
Common shares available for grant			1,200,000								1,200,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											0
Shares outstanding			0								0
Restricted Stock Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											0
Shares outstanding			0								0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											0
Shares outstanding			0								0
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											0
Shares outstanding			0								0
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											1,007,912
Shares outstanding			2,754,472				2,364,848				2,754,472	2,364,848
Vesting period											3 years
Expense recognized											$ 1,739	$ 420	$ 2,557
Weighted-average grant date fair value of awards granted											$ 13.72	$ 11	$ 15.34
Fair value of vested and issued shares or units											$ 1,642	$ 2,101	$ 6,754
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											49,195
Shares outstanding			49,195				68,140				49,195	68,140
Vesting period											1 year
Expense recognized											$ 655	$ 508	$ 479
Weighted-average grant date fair value of awards granted											$ 14.84	$ 8.07	$ 14.33
Fair value of vested and issued shares or units											$ 1,011	$ 248	$ 466
Unrecognized compensation cost			$ 304								$ 304
Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum amount of stock which can be repurchased, value		$ 50,000
Payments for repurchase of common stock												$ 162	$ 754
Stock repurchased during period, shares												23,584	52,879
Average repurchase price per share												$ 6.84	$ 14.25
Series A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred shares, authorized			2,000,000								2,000,000
Dividend Declared | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share	$ 0.0750
Dividends Payable, Date to be Paid	Apr. 6, 2022
Dividends Payable, Date of Record	Mar. 30, 2022

Shareholders' Equity - Summar_2

Shareholders' Equity - Summary of Share Activity - PSU's (Details) - Performance Share Units - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	2,364,848
Granted	1,007,912
Vested and issued (in shares)	(120,271)
Forfeited (in shares)	(498,017)
Outstanding - Ending	2,754,472	2,364,848
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding - Beginning	$ 12.61
Granted	13.72	$ 11	$ 15.34
Vested and issued	12.75
Forfeited	12.75
Outstanding - Ending	$ 12.98	$ 12.61

Shareholders' Equity - Summar_3

Shareholders' Equity - Summary of Share Activity - Restricted Shares (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	68,140
Granted	49,195
Vested	(68,140)
Outstanding - Ending	49,195	68,140
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding - Beginning	$ 8.07
Granted	14.84	$ 8.07	$ 14.33
Vested and issued	8.07
Outstanding - Ending	$ 14.84	$ 8.07

Net Income (Loss) Per Common _3

Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Income Per Common Share Basic And Diluted [Line Items]
Net income (loss) - basic and diluted	$ 170,988	$ (17,235)	$ (9,639)
Net income (loss) per common share, basic	$ 2.59	$ (0.26)	$ (0.15)
Net income (loss) per common share, diluted	$ 2.58	$ (0.26)	$ (0.15)
Basic, Weighted average number of common shares outstanding	65,944,494	65,768,485	65,553,196
Diluted, Weighted average number of common shares outstanding	66,284,003	65,768,485	65,553,196
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)	312,455
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)	27,054

Net Income (Loss) Per Common _4

Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share (Parenthetical) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of basic earnings per share amount	49,195	68,140	31,405

Net Income (Loss) Per Common _5

Net Income (Loss) Per Common Share - Anti-Dilutive Instruments Excluded from Calculation of Net Income (Loss) Per Common Share (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per common share	2,364,848	1,764,976
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per common share	68,140	31,405

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Schedule of Change in Accumulated Other Comprehensive Loss by Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 601,027	$ 550,403	$ 581,429
Other comprehensive income (loss), net of taxes	(63,218)	88,985	11,610
Balance	694,024	601,027	550,403
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(19,578)	(114,709)
Other comprehensive income (loss) before reclassifications	(77,939)	95,131
Other comprehensive income (loss), net of taxes	(77,939)	95,131
Balance	(97,517)	(19,578)	(114,709)
Defined Benefit Pension and Other Post-Retirement Benefit Items
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(7,997)	(1,851)
Other comprehensive income (loss) before reclassifications	14,834	(6,114)
Amounts reclassified from accumulated other comprehensive loss	(113)	(32)
Other comprehensive income (loss), net of taxes	14,721	(6,146)
Balance	6,724	(7,997)	(1,851)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(27,575)	(116,560)	(128,170)
Other comprehensive income (loss) before reclassifications	(63,105)	89,017
Amounts reclassified from accumulated other comprehensive loss	(113)	(32)
Other comprehensive income (loss), net of taxes	(63,218)	88,985	11,610
Balance	$ (90,793)	$ (27,575)	$ (116,560)

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
MPR - CPP
Related Party Transaction [Line Items]
Ownership percentage	50.00%
Related party transaction, purchases from related party	$ 88,073	$ 76,875	$ 96,763
Receivable balance from related party	$ 5,688	3,518
MPR - logging JV
Related Party Transaction [Line Items]
Ownership percentage	50.00%
Related party transaction, purchases from related party	$ 12,775	15,118	$ 16,681
Accounts payable, related parties	$ 2,400	$ 1,953

Segment Information - Additiona

Segment Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)millcustomer	Dec. 31, 2020USD ($)customer	Dec. 31, 2019USD ($)customer
Segment Reporting Information [Line Items]
Number of pulp mills | mill	4
Revenues	$ 1,803,255	$ 1,423,140	$ 1,624,411
Number of customers accounting for 10% or more of sales | customer	0	0	0
Revenue from Contract with Customer Benchmark | Customer Concentration Risk | Minimum
Segment Reporting Information [Line Items]
Revenue major customer percentage	10.00%
Intersegment Eliminations | Market Pulp
Segment Reporting Information [Line Items]
Revenues	$ 336	$ 459	$ 531
Intersegment Eliminations | Wood Products
Segment Reporting Information [Line Items]
Revenues	$ 12,661	$ 12,040	$ 15,190
MPR - CPP
Segment Reporting Information [Line Items]
Ownership percentage	50.00%

Segment Information - Schedule

Segment Information - Schedule of Results by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total revenues	$ 1,803,255	$ 1,423,140	$ 1,624,411
Operating income (loss)	346,583	63,729	84,003
Depreciation and amortization	132,199	128,921	126,394
Purchase of property, plant and equipment	159,440	78,518	132,034
Total assets	2,351,232	2,129,126	2,065,720
Pulp
Segment Reporting Information [Line Items]
Total revenues	1,389,439	1,130,302	1,370,742
Lumber
Segment Reporting Information [Line Items]
Total revenues	295,557	180,769	142,243
Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	111,891	105,808	103,453
Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	6,368	6,261	7,973
Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	1,483,093	1,220,644	1,457,123
Operating income (loss)	251,724	37,952	90,583
Depreciation and amortization	115,293	115,945	117,108
Purchase of property, plant and equipment	139,312	53,734	103,066
Total assets	1,882,078	1,740,233	1,782,105
Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	311,081	197,649	159,937
Operating income (loss)	108,466	34,704	7,349
Depreciation and amortization	14,858	12,212	7,966
Purchase of property, plant and equipment	18,002	23,788	28,425
Total assets	258,965	112,267	83,102
Operating Segments | Pulp | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	1,389,439	1,130,302	1,370,742
Operating Segments | Pulp | Wood Products
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Operating Segments | Lumber | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Operating Segments | Lumber | Wood Products
Segment Reporting Information [Line Items]
Total revenues	293,166	180,769	142,243
Operating Segments | Energy and Chemicals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	93,654	90,342	86,381
Operating Segments | Energy and Chemicals | Wood Products
Segment Reporting Information [Line Items]
Total revenues	11,547	10,619	9,721
Operating Segments | Wood Residuals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Operating Segments | Wood Residuals | Wood Products
Segment Reporting Information [Line Items]
Total revenues	6,368	6,261	7,973
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	9,081	4,847	7,351
Operating income (loss)	(13,607)	(8,927)	(13,929)
Depreciation and amortization	2,048	764	1,320
Purchase of property, plant and equipment	2,126	996	543
Total assets	210,189	276,626	200,513
Corporate, Non-Segment | Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Corporate, Non-Segment | Lumber
Segment Reporting Information [Line Items]
Total revenues	2,391	0	0
Corporate, Non-Segment | Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	6,690	4,847	7,351
Corporate, Non-Segment | Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	0	0	0
United States
Segment Reporting Information [Line Items]
Total revenues	345,187	245,352	222,295
United States | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	183,198	149,816	168,197
United States | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	156,762	93,802	54,098
United States | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	5,227	1,734	0
Germany
Segment Reporting Information [Line Items]
Total revenues	522,711	387,291	473,206
Germany | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	459,725	336,346	419,472
Germany | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	62,986	50,945	53,734
Germany | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0
China
Segment Reporting Information [Line Items]
Total revenues	377,136	367,564	430,508
China | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	375,891	364,527	430,508
China | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	1,245	3,037	0
China | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Other Countries
Segment Reporting Information [Line Items]
Total revenues	558,221	422,933	498,402
Other Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	464,279	369,955	438,946
Other Countries | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	90,088	49,865	52,105
Other Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	3,854	3,113	7,351
Foreign Countries
Segment Reporting Information [Line Items]
Total revenues	1,458,068	1,177,788	1,402,116
Foreign Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	1,299,895	1,070,828	1,288,926
Foreign Countries | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	154,319	103,847	105,839
Foreign Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	$ 3,854	$ 3,113	$ 7,351

Segment Information - Schedul_2

Segment Information - Schedule of Results by Segment (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Investment in joint ventures	$ 49,651	$ 46,429	$ 53,122

Segment Information - Schedul_3

Segment Information - Schedule Of Long Lived Assets By Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,135,631	$ 1,109,740
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	51,136
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	660,745	699,408
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	406,985	390,542
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	16,765	19,790
Foreign Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,084,495	$ 1,109,740

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurement - Estimated Fair Values of Outstanding Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,220,323	$ 1,186,209
Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	22,874	54,980
Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	1,197,449	1,131,229
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1) | Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1) | Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Significant Other Observable Inputs (Level 2)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	1,220,323	1,186,209
Fair Value, Significant Other Observable Inputs (Level 2) | Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	22,874	54,980
Fair Value, Significant Other Observable Inputs (Level 2) | Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	1,197,449	1,131,229
Fair Value, Significant unobservable inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Significant unobservable inputs (Level 3) | Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Significant unobservable inputs (Level 3) | Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	$ 0	$ 0

Financial Instruments and Fai_4

Financial Instruments and Fair Value Measurement - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Accounts receivable	$ 345,345	$ 227,055
Cash and cash equivalents	345,610	361,098
Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value of senior notes, net of note issuance costs	$ 1,159,097	$ 1,090,314

Lease Commitments - Additional

Lease Commitments - Additional Information (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Finance Lease, Weighted Average Remaining Lease Term	8 years	9 years	10 years
Consumer Price Index Basis Point Change	1.00%
Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	6 years
Equipment
Lessee, Lease, Description [Line Items]
Finance Lease, Weighted Average Remaining Lease Term	8 years
Office Building
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	5 years
Minimum | Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	3 years
Minimum | Railroad Transportation Equipment
Lessee, Lease, Description [Line Items]
Lessee, Finance Lease, Term of Contract	7 years
Minimum | Office Building
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	2 years
Maximum | Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	10 years
Maximum | Railroad Transportation Equipment
Lessee, Lease, Description [Line Items]
Lessee, Finance Lease, Term of Contract	12 years
Maximum | Office Building
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	6 years

Lease Commitments - Components

Lease Commitments - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 4,086	$ 3,712	$ 3,322
Finance lease, amortization of right-of-use assets	7,481	4,963	3,768
Finance lease, interest on lease liabilities	1,635	1,460	1,370
Total lease cost	$ 13,202	$ 10,135	$ 8,460

Lease Commitments - Supplementa

Lease Commitments - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flow payments for operating leases	$ 4,086	$ 3,712	$ 3,322
Operating cash flow payments for finance leases	1,635	1,460	1,370
Financing cash flow payments for finance leases	$ 7,850	$ 4,636	$ 3,344

Lease Commitments - Other Infor

Lease Commitments - Other Information Related To Leases (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	5 years	6 years	7 years
Finance Lease, Weighted Average Remaining Lease Term	8 years	9 years	10 years
Operating Lease, Weighted Average Discount Rate, Percent	6.00%	6.00%	7.00%
Finance Lease, Weighted Average Discount Rate, Percent	3.00%	3.00%	4.00%

Lease Commitments - Supplemen_2

Lease Commitments - Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 9,712	$ 13,251
Operating lease liability	$ 3,192	$ 3,318
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherCurrentLiabilitiesMember	us-gaap:OtherCurrentLiabilitiesMember
Operating lease liabilities	$ 6,574	$ 9,933
Total operating lease liabilities	9,766	13,251
Property and equipment, gross	87,719	65,418
Accumulated depreciation	(24,850)	(19,353)
Finance Lease, property, plant and equipment	$ 62,869	$ 46,065
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Other current liabilities	$ 8,467	$ 5,364
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherCurrentLiabilitiesMember	us-gaap:OtherCurrentLiabilitiesMember
Long-term debt	$ 55,574	$ 41,329
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtMember	us-gaap:LongTermDebtMember
Total finance lease liabilities	$ 64,041	$ 46,693

Lease Commitments - Schedule of

Lease Commitments - Schedule of Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating Lease Liabilities, Payments Due [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 3,732
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,725
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,575
Lessee, Operating Lease, Liability, Payments, Due Year Four	879
Lessee, Operating Lease, Liability, Payments, Due Year Five	662
Lessee, Operating Lease, Liability, Payments, Due after Year Five	1,986
Lessee, Operating Lease, Liability, Payments, Due	11,559
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,793)
Operating lease liabilities, total	$ 9,766	$ 13,251

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Thousands	Dec. 31, 2021USD ($)
Take-or-Pay Contracts
Recorded Unconditional Purchase Obligation [Line Items]
Purchase obligation	$ 283,834