Mercer International (MERC) 10-K 13 Feb 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 12, 2020	Jun. 30, 2019
Cover [Abstract]
Entity Registrant Name	MERCER INTERNATIONAL INC.
Entity Central Index Key	0001333274
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Trading Symbol	MERC
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		65,629,582
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			$ 981.2
Documents Incorporated by Reference	Certain information that will be contained in the definitive proxy statement for the Registrant’s annual meeting to be held in 2020 is incorporated by reference into Part III of this Form 10-K.

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues	$ 1,624,411	$ 1,457,718	$ 1,169,145
Costs and expenses
Cost of sales, excluding depreciation and amortization	1,340,380	1,032,101	866,019
Cost of sales depreciation and amortization	125,801	96,288	84,893
Selling, general and administrative expenses	74,227	61,462	49,679
Operating income	84,003	267,867	168,554
Other income (expenses)
Interest expense	(75,750)	(51,464)	(54,796)
Loss on settlement of debt (Note 9(a))	(4,750)	(21,515)	(10,696)
Legal cost award	0	(6,951)	0
Acquisition commitment fee (Note 2)	0	(5,250)	0
Other income (expenses)	6,084	(5,417)	873
Total other expenses, net	(74,416)	(90,597)	(64,619)
Income before provision for income taxes	9,587	177,270	103,935
Provision for income taxes	(19,226)	(48,681)	(33,452)
Net income (loss)	$ (9,639)	$ 128,589	$ 70,483
Net income (loss) per common share
Basic	$ (0.15)	$ 1.97	$ 1.09
Diluted	(0.15)	1.96	1.08
Dividends declared per common share	$ 0.5375	$ 0.5000	$ 0.4700

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (9,639)	$ 128,589	$ 70,483
Other comprehensive income (loss), net of taxes
Foreign currency translation adjustment	12,291	(76,899)	120,505
Change in unrecognized losses and prior service costs related to defined benefit pension plans, net of tax of $901 (2018 – $424 and 2017 – $nil)	(681)	7,730	5,763
Other comprehensive income (loss), net of taxes	11,610	(69,169)	126,268
Total comprehensive income	$ 1,971	$ 59,420	$ 196,751

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Change in unrecognized losses and prior service costs related to defined benefit plan, tax effect	$ 901	$ 424	$ 0

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 351,085	$ 240,491
Accounts receivable	208,740	252,692
Inventories	272,599	303,813
Prepaid expenses and other	12,273	13,703
Total current assets	844,697	810,699
Property, plant and equipment, net	1,074,242	1,029,257
Investment in joint ventures	53,122	62,574
Amortizable intangible assets, net	53,371	53,927
Operating lease right-of-use assets	13,004
Other long-term assets	26,038	17,904
Deferred income tax	1,246	1,374
Total assets	2,065,720	1,975,735
Current liabilities
Accounts payable and other	255,544	194,484
Pension and other post-retirement benefit obligations	768	904
Total current liabilities	256,312	195,388
Debt	1,087,932	1,041,389
Pension and other post-retirement benefit obligations	25,489	25,829
Finance lease liabilities	31,103	24,669
Operating lease liabilities	10,520
Other long-term liabilities	14,114	13,924
Deferred income tax	89,847	93,107
Total liabilities	1,515,317	1,394,306
Shareholders’ equity
Common shares $1 par value; 200,000,000 authorized; 65,629,000 issued and outstanding (2018 – 65,202,000)	65,598	65,171
Additional paid-in capital	344,994	342,438
Retained earnings	256,371	301,990
Accumulated other comprehensive loss	(116,560)	(128,170)
Total shareholders’ equity	550,403	581,429
Total liabilities and shareholders’ equity	2,065,720	1,975,735
Commitments and contingencies (Note 18,19)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	65,629,000	65,202,000
Common Stock, Shares, Outstanding	65,629,000	65,202,000
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
Total shareholders' equity at Dec. 31, 2016	$ 379,128	$ 64,656	$ 333,673	$ 166,068	$ (185,269)
Balance (in shares) at Dec. 31, 2016		64,694
Shares issued on grants of restricted shares		$ 38	(38)
Shares issued on grants of restricted shares (in shares)		43
Shares issued on grants of performance share units		$ 280	(280)
Shares issued on grants of performance share units (in shares)		280
Stock compensation expense	2,890		2,890
Net income (loss)	70,483			70,483
Dividends declared	(30,553)			(30,553)
Settlement of short-swing trade profit claim	2,450		2,450
Other comprehensive income (loss)	126,268				126,268
Total shareholders' equity at Dec. 31, 2017	550,666	$ 64,974	338,695	205,998	(59,001)
Balance (in shares) at Dec. 31, 2017		65,017
Shares issued on grants of restricted shares		$ 43	(43)
Shares issued on grants of restricted shares (in shares)		31
Shares issued on grants of performance share units		$ 154	(154)
Shares issued on grants of performance share units (in shares)		154
Stock compensation expense	3,940		3,940
Net income (loss)	128,589			128,589
Dividends declared	(32,597)			(32,597)
Other comprehensive income (loss)	(69,169)				(69,169)
Total shareholders' equity at Dec. 31, 2018	$ 581,429	$ 65,171	342,438	301,990	(128,170)
Balance (in shares) at Dec. 31, 2018	65,202	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 (in shares)		(53)
Other comprehensive income (loss)	11,610				11,610
Total shareholders' equity at Dec. 31, 2019	$ 550,403	$ 65,598	$ 344,994	$ 256,371	$ (116,560)
Balance (in shares) at Dec. 31, 2019	65,629	65,629

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from (used in) operating activities
Net income (loss)	$ (9,639)	$ 128,589	$ 70,483
Adjustments to reconcile net income (loss) to cash flows from operating activities
Depreciation and amortization	126,394	96,729	85,294
Deferred income tax provision (benefit)	(7,873)	16,596	22,056
Inventory impairment	9,200
Loss on settlement of debt	4,750	21,515	10,696
Defined benefit pension plans and other post-retirement benefit plan expense	3,449	1,868	2,179
Stock compensation expense	3,036	3,940	2,890
Foreign exchange transaction losses (gains)	7,116	746	(875)
Other	5,834	2,419	3,372
Defined benefit pension plans and other post-retirement benefit plan contributions	(4,467)	(1,133)	(2,031)
Changes in working capital
Accounts receivable	41,369	(10,370)	(64,949)
Inventories	24,683	(58,082)	(19,994)
Accounts payable and accrued expenses	45,256	37,959	37,170
Other	(4,825)	(4,108)	(4,365)
Net cash from (used in) operating activities	244,283	236,668	141,926
Cash flows from (used in) investing activities
Purchase of property, plant and equipment	(132,034)	(87,012)	(57,915)
Purchase of amortizable intangible assets	(623)	(600)	(1,777)
Acquisitions (Note 2)	(6,380)	(380,312)	(61,627)
Other	(321)	445	(232)
Net cash from (used in) investing activities	(139,358)	(467,479)	(121,551)
Cash flows from (used in) financing activities
Redemption of senior notes	(103,875)	(317,439)	(234,945)
Proceeds from issuance of senior notes	205,500	350,000	550,000
Proceeds from (repayment of) revolving credit facilities, net	(58,404)	36,560	22,281
Dividend payments	(35,279)	(40,724)	(29,866)
Payment of interest rate derivative liability			(6,887)
Repurchase of common shares	(754)
Payment of debt issuance costs	(4,213)	(10,074)	(11,620)
Proceeds from government grants	6,467		600
Other	(3,344)	(3,462)	(812)
Net cash from (used in) financing activities	6,098	14,861	288,751
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(429)	(4,297)	10,716
Net increase (decrease) in cash, cash equivalents and restricted cash	110,594	(220,247)	319,842
Cash, cash equivalents and restricted cash, beginning of year	240,491	460,738	140,896
Cash, cash equivalents and restricted cash, end of year	351,085	240,491	460,738
Supplemental cash flow disclosure
Cash paid for interest	59,707	40,278	45,908
Cash paid for income taxes	52,877	16,149	10,866
Supplemental schedule of non-cash investing and financing activities:
Leased production equipment	$ 8,739	$ 12,145	$ 145

The Company And Summary Of Sign

The Company And Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
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 Market. Since acquiring Mercer Peace River Pulp Ltd. (“MPR”) in December 2018 it now 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 one sawmill in Germany. 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. The Company owns 100% of the economic interest in its subsidiaries with the exception of the 50% joint venture interest in an NBSK pulp mill 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. 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. The Company maintains an allowance for doubtful accounts at an amount estimated to cover the potential losses on certain 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 and financial position of the debtors. For certain customers, the Company receives a letter of credit prior to shipping its product. 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. 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 Note. The costs of major rebuilds, replacements and those expenditures that substantially increase the useful lives of existing property, plant and equipment are capitalized, as well as interest costs associated with major capital projects until ready for their intended use. 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 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. Note 1. The Company and Summary of Significant Accounting Policies (continued) Leases The Company determines if a contract contains a lease at inception. Leases are classified as either operating or finance leases. Operating leases are included in “Operating lease right-of-use assets”, “Accounts payable and other”, and “Operating lease liabilities” in the Consolidated Balance Sheets. Finance leases are included in “Property, plant and equipment, net”, “Accounts payable and other”, and “Finance lease liabilities” in the Consolidated Balance Sheets. 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 lease right-of-use assets represent the Company’s right to use an underlying asset for the term of the lease, and the related liabilities represent the Company’s obligation to make the lease payments arising from the lease. Operating lease right-of-use assets and the related liabilities are recognized at the lease commencement date based on the present value of the 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 investment grants from federal 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. 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. 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 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 Note. Sandalwood Tree Plantations Sandalwood tree plantations are measured at the lower of cost, which includes both 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. Note 1. The Company and Summary of Significant Accounting Policies (continued) 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 MPR 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 at the beginning of the year. The Company recognizes the net funded status of the plan. In addition, hourly-paid employees at the Celgar mill are covered by a multiemployer pension plan 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 shareholders’ equity. 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 (expenses)” 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 shareholders’ equity. 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. Note 1. The Company and Summary of Significant Accounting Policies (continued) 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 Business 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 to 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. 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. Note 1. The Company and Summary of Significant Accounting Policies (continued) 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 (expenses)” 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 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) New Accounting Pronouncements Accounting Pronouncements Adopted In February 2016, the FASB established Topic 842, Leases, by issuing Accounting Standards Update (“ASU”) 2016-02, Leases, which requires lessees to recognize virtually all leases on the balance sheet, by recording a right-of-use asset and corresponding liability. Additionally, the update also requires additional disclosures in regards to the nature, timing and uncertainty of cash flows arising from leases. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU 2018-10, Codification Improvements to Topic 842, Leases; and ASU 2018-11, Leases: Targeted Improvements. These updates were effective for financial statements issued for fiscal years beginning after December 15, 2018. The Company adopted these updates on January 1, 2019 using the modified retrospective method with no restatement of comparative financial information. The new standard provides a number of optional practical expedients in transition and the Company elected to use all of them on adoption. Adoption of the standard resulted in recognition of right-of-use assets and lease liabilities for operating leases of $14,700 as of January 1, 2019. The standard did not impact the Consolidated Statements of Operations or the Consolidated Statements of Cash Flows. The Company’s lease disclosure has been included in the Lease Commitments Note. Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the current incurred loss impairment method with a method that reflects expected credit losses. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326): Targeted Transition Relief, which provides entities with targeted transition relief that is intended to increase comparability of financial statement information for some entities that otherwise would have measured similar financial instruments using different measurement methodologies. These updates are effective for financial statements issued after December 15, 2019, with early adoption permitted. This guidance should be applied using the modified-retrospective approach. The Company will adopt these updates on January 1, 2020. The Company is currently evaluating the provisions of this guidance but believes the adoption of these updates will not have a significant impact on the consolidated financial statements as the Company’s credit risk associated with its sales is currently managed through the purchase of credit insurance, 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 performance. The Company is exposed to credit risk in the event of non-performance by counterparties to its financial instruments. The Company attempts to minimize this exposure by entering into contracts with counterparties that are believed to be of high credit quality. In December 2019, the FASB issued ASU 2019-12, Income Taxes – Simplifying the Accounting for Income Taxes, which removes certain exceptions for investments, intraperiod tax allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. This update is effective for financial statements issued for fiscal years beginning after December 15, 2020, with early adoption permitted. The Company is currently evaluating the impact of this update but believes it will not have a significant impact on the consolidated financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
Acquisitions	Note 2. Acquisitions 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 will be called Mercer Forestry Services Ltd. (“MFS”). Significantly all of the purchase price was allocated to the fair value of logging equipment. MFS qualifies 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. MPR On December 10, 2018, the Company acquired all of the issued and outstanding shares of MPR. The purchase price was cash consideration of $344,030, after certain customary working capital adjustments. The acquisition resulted in 100% ownership of a bleached kraft pulp mill in Peace River, Alberta, a 50% joint venture interest in the Cariboo Pulp & Paper Company (“CPP”) (being an NBSK pulp mill, in Quesnel, British Columbia) and a 50% interest in a logging and chipping operation for the areas underlying MPR’s forest management agreements and timber allocations. The acquisition of MPR expands the Company’s sales presence in Asia and adds northern bleached hardwood kraft to its product mix. The following table summarizes the Company’s allocation of the purchase price to the fair value of the assets acquired and liabilities assumed at the acquisition date: Purchase Price Allocation Current assets $ 134,748 Property, plant and equipment 214,260 Investment in joint ventures 55,325 Amortizable intangible assets, timber cutting rights (a) 37,634 Other long term-assets 392 Total assets acquired 442,359 Current liabilities 35,578 Pension obligations 9,747 Deferred income tax 49,907 Other long-term liabilities 3,097 Total liabilities assumed 98,329 Net assets acquired $ 344,030 (a) The timber cutting rights are being amortized on a straight-line basis over 30 years. The fair value of the timber cutting rights was determined through the market approach utilizing comparable market data. The values were then discounted at a rate of 12% for 30 years to arrive at the fair value. Note 2. Acquisitions (continued) During 2019, immaterial adjustments were made to the purchase price allocation to reflect the final valuation of the assets acquired and liabilities assumed. MPR meets the definition of 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. The amounts of MPR’s revenues and net loss included in the Consolidated Statements of Operations for the year ended December 31, 2018 were $29,907 and $978, respectively. In the year ended December 31, 2018, $1,871 of acquisition related costs were recognized in “Selling, general and administrative expenses” in the Consolidated Statements of Operations. The Company also incurred an acquisition commitment fee of $5,250 for a senior unsecured bridge facility to ensure financing was in place for the acquisition. However, the bridge facility was not used as the Company issued senior notes due 2025. The following unaudited pro forma information represents the Company’s results of operations as if the acquisition of MPR had occurred on January 1, 2017. This pro forma information does not purport to be indicative of the results that would have occurred for the periods presented or that may be expected in the future. For the Year Ended December 31, 2018 2017 Revenues $ 1,906,697 $ 1,503,446 Net income $ 189,431 $ 42,267 The unaudited pro forma information includes additional interest expense related to debt issued to finance the acquisition of $25,190 and $26,989 for the years ended December 31, 2018 and December 31, 2017, respectively and additional depreciation expense of $11,679 and $9,776 for the years ended December 31, 2018 and December 31, 2017, respectively. Other adjustments also include those related to increasing the December 31, 2018 net income and decreasing the December 31, 2017 net income by the non-recurring acquisition commitment fee of $5,250 and acquisition costs of $1,871. Mercer Sandalwood On October 18, 2018, the Company acquired Mercer Sandalwood Pty Ltd (“Mercer Sandalwood”) (formerly Santanol) for $35,724 cash. Mercer Sandalwood owns and leases existing Indian sandalwood plantations and a processing extraction plant in Australia. The acquisition presents the opportunity to expand the Company’s operations to include plantation harvesting as well as production and marketing of solid wood chemical extractives. The following table summarizes the Company’s allocation of the purchase price to the fair value of the assets acquired and liabilities assumed from Mercer Sandalwood at the acquisition date: Purchase Price Allocation Net working capital $ 5,111 Property, plant and equipment 18,490 Sandalwood tree plantations (a) 14,587 Deferred income tax liability (2,464 ) Net assets acquired $ 35,724 ( a ) The fair value of the sandalwood tree plantations was determined using the discounted cash flows method using a rate of 10.5%. During 2019, immaterial adjustments were made to the purchase price allocation to reflect the final valuation of the assets acquired and liabilities assumed. Note 2. Acquisitions (continued) Mercer Sandalwood meets the definition of 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. The amount of Mercer Sandalwood’s revenues and net loss included in the Consolidated Statements of Operations for the year ended December 31, 2018 was $478 and $907, respectively. In the year ended December 31, 2018, $777 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 Santanol has not been provided as it does not have a material effect on the Company’s Consolidated Statements of Operations.

Accounts Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Accounts Receivable	Note 3. Accounts Receivable Accounts receivable as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 Trade, net of allowance of $164 (2018 – $nil) $ 172,626 $ 230,426 Other 36,114 22,266 $ 208,740 $ 252,692

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Inventory Net [Abstract]
Inventories	Note 4. Inventories Inventories as of December 31, 2019 and December 31, 2018, were comprised of the following: December 31, 2019 2018 Raw materials $ 99,754 $ 103,983 Finished goods 77,815 114,304 Spare parts and other 95,030 85,526 $ 272,599 $ 303,813 In the second half of 2019, as a result of the decline in pulp prices and increased fiber costs for the Canadian mills, the Company recorded inventory impairment charges of $23,000 at the Canadian mills. These charges were recorded in “Cost of sales, excluding depreciation and amortization” in the Consolidated Statements of Operations. As of December 31, 2019, $3,500 of the write-down was recorded in raw materials inventory and $5,700 of the write-down was recorded in finished goods inventory.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	Note 5. Property, Plant and Equipment Property, plant and equipment as of December 31, 2019 and December 31, 2018, was comprised of the following: Estimated Useful Lives December 31, (Years) 2019 2018 Land $ 54,385 $ 54,832 Buildings 10 - 50 255,233 251,408 Production and other equipment 5 - 25 1,850,377 1,698,132 2,159,995 2,004,372 Less: accumulated depreciation (1,085,753 ) (975,115 ) $ 1,074,242 $ 1,029,257 Note 5. Property, Plant and Equipment (continued) As of December 31, 2019, property, plant and equipment was net of $190,571 of unamortized government grants (2018 – $211,532). As a result of the sustained decline in pulp prices and increased fiber costs for the Canadian mills in 2019, the Company performed impairment tests, as of December 31, 2019 on the long-lived assets of the Canadian pulp mills which had a combined carrying value of $447,510. The Company compared the carrying values of the Canadian mills’ long-lived assets to their estimated future undiscounted cash flows. An impairment assessment requires management to apply judgement in estimating the future cash flows. The significant estimates in the future cash flows include periods of operation, projections of product pricing, production levels, fiber and other production costs, market supply and demand, foreign exchange rates and maintenance spending. 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, 2019, the Company had recorded $9,516 (2018 – $8,752) of asset retirement obligations in “Other long-term liabilities” in the Consolidated Balance Sheets.

Amortizable Intangible Assets

Amortizable Intangible Assets	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortizable Intangible Assets	Note 6. Amortizable Intangible Assets Amortizable intangible assets as of December 31, 2019 and December 31, 2018, were comprised of the following: Estimated December 31, 2019 December 31, 2018 Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Energy sales agreement 11 $ 16,909 $ (4,182 ) $ 12,727 $ 17,234 $ (1,977 ) $ 15,257 Timber cutting rights 30 38,767 (1,369 ) 37,398 34,139 — 34,139 Software and other intangible assets 5 24,999 (21,753 ) 3,246 23,731 (19,200 ) 4,531 $ 80,675 $ (27,304 ) $ 53,371 $ 75,104 $ (21,177 ) $ 53,927 Amortization expense related to intangible assets for the year ended December 31, 2019 was $5,930 (2018 – $5,022; 2017 – 4,030). Amortization expense for the next five years related to intangible assets as of December 31, 2019 is expected to be as follows: 2020 2021 2022 2023 2024 Amortization expense $ 4,284 $ 4,007 $ 3,272 $ 2,919 $ 2,907

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Dec. 31, 2019
Other Assets [Abstract]
Other Long-Term Assets	Note 7. Other Long-Term Assets Other long-term assets as of December 31, 2019 and December 31, 2018, were comprised of the following: December 31, 2019 2018 Sandalwood tree plantations $ 21,603 $ 13,258 Other 4,435 4,646 $ 26,038 $ 17,904

Accounts Payable and Other

Accounts Payable and Other	12 Months Ended
	Dec. 31, 2019
Payables And Accruals [Abstract]
Accounts Payable and Other	Note 8. Accounts Payable and Other Accounts payable and other as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 Trade payables $ 73,721 $ 36,333 Accrued expenses 111,696 95,936 Interest payable 33,198 16,861 Income tax payable 28,080 29,818 Legal cost award payable — 6,951 Other 8,849 8,585 $ 255,544 $ 194,484

Debt

Debt	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Debt	Note 9. Debt Debt as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 2022 Senior Notes, principal amount $100,000 (a) $ — $ 98,918 2024 Senior Notes, principal amount $250,000 (a) 246,911 246,154 2025 Senior Notes, principal amount $550,000 (a) 545,665 342,761 2026 Senior Notes, principal amount $300,000 (a) 295,356 294,588 Credit arrangements €200 million joint revolving credit facility (b) — 58,968 C$60 million revolving credit facility (c) — C$40 million revolving credit facility (d) — — €2.6 million demand loan (e) — — $ 1,087,932 $ 1,041,389 The maturities of the principal portion of debt as of December 31, 2019 were as follows: 2020 $ — 2021 — 2022 — 2023 — 2024 250,000 Thereafter 850,000 $ 1,100,000 Note 9. Debt (continued) 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, 2019, the Company was in compliance with the terms of its debt agreements. (a) In 2018, the Company issued $350,000 in aggregate principal amount of 7.375% senior notes which mature on January 15, 2025 (the “2025 Senior Notes”). The 2025 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $342,682 after deducting the underwriter’s discount and offering expenses. The net proceeds together with cash on hand were used to finance the acquisition of MPR. In October 2019, the Company issued an additional $200,000 in aggregate principal amount of 2025 Senior Notes at a price of 102.75% of their principal amount for a yield to worst of 6.435%. In 2017, the Company issued $300,000 in aggregate principal amount of 5.50% senior notes which mature on January 15, 2026 (the “2026 Senior Notes”). The 2026 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $293,795 after deducting the underwriter’s discount and offering expenses. In 2018, the net proceeds, together with cash on hand, were used to redeem $300,000 in aggregate principal amount of the 2022 Senior Notes. In connection with this redemption, the Company recorded a loss on settlement of debt of $21,515 in the Consolidated Statements of Operations. In 2017, the Company issued $250,000 in aggregate principal amount of 6.50% senior notes which mature on February 1, 2024 (the “2024 Senior Notes” and collectively with the 2025 Senior Notes and 2026 Senior Notes, the “Senior Notes”). The 2024 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $244,711 after deducting the underwriter’s discount and offering expenses. The net proceeds, together with cash on hand, were used to redeem $227,000 of remaining aggregate principal amount of outstanding senior notes due 2019, to finance the acquisition of the Friesau mill and for general working capital purposes. In connection with this redemption, the Company recorded a loss on settlement of debt of $10,696 in the Consolidated Statements of Operations. The Senior Notes are general unsecured senior obligations of the Company. They rank equal in right of payment with all existing and future unsecured senior indebtedness of the Company and are senior in right of payment to any current or future subordinated indebtedness of the Company. The Senior Notes are effectively junior in right of payment to all existing and future secured indebtedness, to the extent of the assets securing such indebtedness, and all indebtedness and liabilities of the Company’s subsidiaries. The Company may redeem all or a part of the 2025 Senior Notes or 2026 Senior Notes, upon not less than 10 days’ or more than 60 days’ notice and the Company may redeem all or a part of the 2024 Senior Notes, upon not less than 30 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date. Note 9. Debt (continued) The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the outstanding Senior Notes: 2024 Senior Notes 2025 Senior Notes 2026 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage February 1, 2020 103.250 % January 15, 2021 103.688 % January 15, 2021 102.750 % February 1, 2021 101.625 % January 15, 2022 101.844 % January 15, 2022 101.375 % February 1, 2022 and thereafter 100.000 % January 15, 2023 and thereafter 100.000 % January 15, 2023 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, 2019, approximately €11.0 million ($12,410) of this facility was supporting bank guarantees leaving approximately €189.0 million ($212,270) available. (c) A C$60.0 million revolving credit facility for MPR that matures in February 2024. 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 1.25% 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 are collateralized by, among other things, the mill’s inventories and accounts receivable. As of December 31, 2019, approximately C$1.0 million ($754) was supporting letters of credit leaving approximately C$59.0 million ($45,440) available. (d) A C$40.0 million revolving credit facility for the Celgar mill that matures in July 2023. Borrowings under the facility are collateralized by the mill’s inventory, accounts receivable, general intangibles and capital assets and are restricted by a borrowing base calculated on the mill’s inventories and accounts receivable. When the borrowing capacity is less than 25% of the total facility the Canadian dollar denominated amounts bear interest at bankers acceptance plus 1.50% or Canadian prime and the U.S. dollar denominated amounts bear interest at LIBOR plus 1.50% or U.S. base. When the borrowing capacity is greater than or equal to 25% of the total facility, the respective bankers acceptance or LIBOR margins are reduced by 0.25% and the Canadian prime or U.S. base margins are reduced by 0.125%. As of December 31, 2019, approximately C$1.7 million ($1,308) was supporting letters of credit leaving approximately C$38.3 million ($29,488) available. (e) A €2.6 million demand loan at the Rosenthal mill 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, 2019, approximately €2.6 million ($2,867) of this facility was supporting bank guarantees leaving approximately $nil available.

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefit Obligations	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Pension and Other Post-Retirement Benefit Obligations	Note 10. 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 MPR defined benefit plans, in aggregate for the year ended December 31, 2019 was as follows: 2019 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2018 $ 95,996 $ 14,859 $ 110,855 Service cost 2,868 271 3,139 Interest cost 3,516 548 4,064 Benefit payments (3,703 ) (647 ) (4,350 ) Actuarial losses (gains) 9,228 (2,477 ) 6,751 Foreign currency exchange rate changes 5,091 698 5,789 Benefit obligation, December 31, 2019 112,996 13,252 126,248 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2018 84,122 — 84,122 Actual returns 11,269 — 11,269 Contributions 3,820 647 4,467 Benefit payments (3,703 ) (647 ) (4,350 ) Foreign currency exchange rate changes 4,483 — 4,483 Fair value of plan assets, December 31, 2019 99,991 — 99,991 Funded status, December 31, 2019 $ (13,005 ) $ (13,252 ) $ (26,257 ) Components of the net benefit cost recognized Service cost $ 2,868 $ 271 $ 3,139 Interest cost 3,516 548 4,064 Expected return on plan assets (4,017 ) — (4,017 ) Amortization of unrecognized items 941 (678 ) 263 Net benefit cost $ 3,308 $ 141 $ 3,449 Note 10 . Pension and Other Post-Retirement Benefit Obligations (continued) Information about the Celgar and, from the date of acquisition, MPR defined benefit plans, in aggregate for the year ended December 31, 2018 was as follows: 2018 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2017 $ 38,330 $ 20,788 $ 59,118 Benefit obligation transferred, MPR 62,545 — 62,545 Service cost 269 467 736 Interest cost 1,409 709 2,118 Benefit payments (2,346 ) (594 ) (2,940 ) Actuarial losses (gains) 456 (5,065 ) (4,609 ) Foreign currency exchange rate changes (4,667 ) (1,446 ) (6,113 ) Benefit obligation, December 31, 2018 95,996 14,859 110,855 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2017 37,057 — 37,057 Fair value plan assets transferred, MPR 52,740 — 52,740 Actual returns 378 — 378 Contributions 539 594 1,133 Benefit payments (2,346 ) (594 ) (2,940 ) Foreign currency exchange rate changes (4,246 ) — (4,246 ) Fair value of plan assets, December 31, 2018 84,122 — 84,122 Funded status, December 31, 2018 $ (11,874 ) $ (14,859 ) $ (26,733 ) Components of the net benefit cost recognized Service cost $ 269 $ 467 $ 736 Interest cost 1,409 709 2,118 Expected return on plan assets (1,694 ) — (1,694 ) Amortization of unrecognized items 915 (207 ) 708 Net benefit cost $ 899 $ 969 $ 1,868 The components of the net benefit cost other than service cost are recorded in “Other income (expenses)” in the Consolidated Statements of Operations. The amortization of unrecognized items relates to net actuarial losses and prior service costs. The Company anticipates that it will make contributions to the defined benefit plans of approximately $3,715 in 2020. Estimated future benefit p ayments Pension Other Post-Retirement Benefits 2020 $ 4,355 $ 516 2021 $ 4,510 $ 544 2022 $ 4,696 $ 568 2023 $ 4,844 $ 593 2024 $ 5,052 $ 618 2025-2029 $ 28,198 $ 3,450 Note 10 . 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, 2019, 2018 and 2017 were as follows for Celgar’s defined benefit plan: December 31, 2019 2018 2017 Benefit obligations Discount rate 3.00 % 3.14 % 3.50 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Net benefit cost for year ended Discount rate 3.14 % 3.50 % 3.80 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Expected rate of return on plan assets 3.90 % 4.40 % 6.00 % 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, 2019 and 2018 were as follows for MPR’s defined benefit plan: December 31, 2019 2018 Benefit obligations Discount rate 3.20 % 3.90 % Rate of compensation increase 2.75 % 2.75 % Net benefit cost for year ended Discount rate 3.90 % 3.95 % Rate of compensation increase 2.75 % 3.25 % Expected rate of return on plan assets 5.12 % 5.15 % 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 of expected pension and other post-retirement benefit obligations. 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 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, 2019 and December 31, 2018 were as follows: December 31, 2019 2018 Health care cost trend rate assumed for next year 5.00% 5.50% 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 2021 2021 Note 10. 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 plan 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 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 MPR defined benefit pension plans’ assets fair value measurements as of December 31, 2019 under the fair value hierarchy: Fair value measurements as of December 31, 2019 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ 43,800 $ — $ — $ 43,800 Debt securities 55,757 — — 55,757 Cash 69 — — 69 Other 365 — — 365 Total assets $ 99,991 $ — $ — $ 99,991 Note 10. Pension and Other Post-Retirement Benefit Obligations (continued) The following table presents the Celgar and MPR defined benefit pension plans’ assets fair value measurements as of December 31, 2018 under the fair value hierarchy: Fair value measurements as of December 31, 2018 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ 31,230 $ — $ — $ 31,230 Debt securities, including buy-in annuities 49,724 — — 49,724 Cash 2,054 — — 2,054 Other 1,114 — — 1,114 Total assets $ 84,122 $ — $ — $ 84,122 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. During the year ended December 31, 2019, the Company made contributions of $1,400 (2018 – $1,024; 2017 – $959). 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. Contributions during the year ended December 31, 2019 totaled $2,203 (2018 – $2,218; 2017 – $1,969). Plan details for the years ended December 31, 2019, 2018 and 2017 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 2019 2018 2017 The Pulp and Paper Industry Pension Plan P085324 April 30, 2021 Yes No No

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 11. Income Taxes Income (loss) before provision for income taxes by taxing jurisdiction for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 U.S. $ (43,408 ) $ (69,202 ) $ (41,635 ) Foreign 52,995 246,472 145,570 $ 9,587 $ 177,270 $ 103,935 Note 11. Income Taxes (continued) Provision for income taxes recognized in the Consolidated Statements of Operations for the years ended December 31, 2019, 2018 and 2017 was comprised of the following: Year Ended December 31, 2019 2018 2017 U.S. Federal and State current income tax provision $ 342 $ — $ — Foreign current income tax provision 26,757 32,085 11,396 Total current income tax provision 27,099 32,085 11,396 Foreign deferred income tax provision (benefit) (7,873 ) 16,596 22,056 Total income tax provision $ 19,226 $ 48,681 $ 33,452 During the year ended December 31, 2019, 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. 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, 2019. 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 2015 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 2016 and 2015, 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, 2019 (2018 – $nil). The Company recognizes interest and penalties related to unrecognized tax benefits in “Provision for income taxes” in the Consolidated Statements of Operations. During the years ended December 31, 2019, 2018 and 2017 the Company did not record any The Tax Cuts and Jobs Act On December 22, 2017, the Tax Cuts and Jobs Act of 2017 was signed into law making significant changes to the Internal Revenue Code. Changes included, but were not limited to, a corporate tax rate decrease from 35% to 21% effective January 1, 2018, a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017, and a minimum tax on certain foreign earnings. As a result of the reduction of the corporate tax rate, the Company revalued its U.S. net deferred tax asset balance, excluding after tax credits, as of December 31, 2017. Based on this revaluation, the net deferred tax asset was reduced by $27,445 and the Company recorded an offsetting reduction to the valuation allowance as the Company had a full valuation allowance against its U.S. deferred tax assets. The amount related to the one-time transition tax on the mandatory deemed repatriation of foreign earnings was $3,473 based on cumulative foreign earnings of $22,398. The Company had loss carryforwards which were used to offset the tax. Note 11. Income Taxes (continued) The minimum tax on certain foreign earnings includes a provision to tax global intangible low-taxed income (“GILTI”) of foreign subsidiaries. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The Company has elected to treat the GILTI inclusions as a period cost. Differences between the U.S. Federal statutory and the Company’s effective rates for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 U.S. Federal statutory rate 21% 21% 35% U.S. Federal statutory rate on income before provision for income taxes $ (2,013 ) $ (37,227 ) $ (36,377 ) Tax differential on foreign income (5,368 ) (17,511 ) 10,398 Effect of foreign earnings (a) (13,747 ) (51,639 ) (3,584 ) Change in undistributed earnings — — 13,297 Change in tax rate — — (26,627 ) Valuation allowance (11,643 ) 64,573 5,750 Tax benefit of partnership structure 3,841 4,208 4,937 Non-taxable foreign subsidies 3,200 2,908 2,735 True-up of prior year taxes 6,031 (9,877 ) (3,685 ) Foreign exchange on valuation allowance 356 (878 ) 1,953 Foreign exchange on settlement of debt — 879 1,342 Other 117 (4,117 ) (3,591 ) Provision for income taxes $ (19,226 ) $ (48,681 ) $ (33,452 ) (a) Primarily due to the impact of the GILTI provision . Deferred income tax assets and liabilities as of December 31, 2019 and December 31, 2018 were comprised of the following: December 31, 2019 2018 German tax loss carryforwards $ 31,317 $ 35,364 U.S. tax loss carryforwards and credits 4,671 8,982 Canadian tax loss carryforwards 16,392 — Basis difference between income tax and financial reporting with respect to operating pulp mills (132,100 ) (138,541 ) Long-term debt (7,388 ) (7,232 ) Payable and accrued expenses 577 4,582 Deferred pension liability 11,270 9,657 Finance leases 10,072 8,269 Research and development expense pool 3,397 3,150 Other (4,050 ) (4,848 ) (65,842 ) (80,617 ) Valuation allowance (22,759 ) (11,116 ) Net deferred income tax liability $ (88,601 ) $ (91,733 ) Comprised of: Deferred income tax asset $ 1,246 $ 1,374 Deferred income tax liability (89,847 ) (93,107 ) Net deferred income tax liability $ (88,601 ) $ (91,733 ) Note 11. Income Taxes (continued) The following table details the scheduled expiration dates of the Company’s net operating loss, interest and income tax credit carryforwards as of December 31, 2019: Amount Expiration U.S. Interest $ 21,800 Indefinite Germany Net operating loss $ 69,300 Indefinite Interest $ 82,000 Indefinite Canada Net operating loss $ 60,700 2036 – 2039 Scientific research and experimental development tax credit $ 4,700 2030 – 2037 Australia Net operating loss $ 11,100 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. Changes in valuation allowances related to net deferred tax assets for the years ended December 31, 2019 and 2018 were as follows: December 31, 2019 2018 Balance as of January 1 $ 11,116 $ 75,689 Additions (reversals) U.S. (4,503 ) (37,709 ) Canada 16,188 (26,384 ) Australia (398 ) 398 The impact of changes in foreign exchange rates 356 (878 ) Balance as of December 31 $ 22,759 $ 11,116 As of December 31, 2019, the Company has recognized the deferred tax assets of its German entities and has a full valuation allowance against the deferred tax assets of its U.S., Canadian and Australian entities. The Company has not recognized a tax liability on the undistributed earnings of foreign subsidiaries as of December 31, 2019 because these earnings are expected to be permanently reinvested outside the U.S. or repatriated without incurring a tax liability. As of December 31, 2019, the cumulative amount of undistributed earnings upon which U.S. income taxes have not been provided was approximately $284,745.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Shareholders' Equity	Note 12. Shareholders’ Equity Dividends The Company’s board of directors declared quarterly dividends during the years ended December 31, 2019 and 2018 as follows: Date Declared Dividend Per Common Share Amount February 14, 2019 $ 0.1250 $ 8,204 May 2, 2019 0.1375 9,025 August 1, 2019 0.1375 9,025 October 31, 2019 0.1375 9,025 $ 0.5375 $ 35,279 Date Declared Dividend Per Common Share Amount February 15, 2018 $ 0.1250 $ 8,147 May 3, 2018 0.1250 8,150 July 26, 2018 0.1250 8,150 October 25, 2018 0.1250 8,150 $ 0.5000 $ 32,597 In February 2020, the Company’s board of directors declared a quarterly dividend of $0.1375 per common share. Payment of the dividend will be made on April 1, 2020 to all shareholders of record on March 25, 2020. Future dividends are subject to approval by the board of directors and may be adjusted as business and industry conditions warrant. Share Capital Preferred shares The Company has authorized 50,000,000 preferred shares (2018 – 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, 2019, 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 until May 2020. 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 were retired upon repurchase. Note 12. Shareholders’ Equity (continued) 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, 2019, there were no issued and outstanding options, restricted stock rights, performance shares or stock appreciation rights. As of December 31, 2019, after factoring in all allocated shares, there remain approximately 2.6 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, 2019, the Company recognized an expense of $2,557 related to PSUs (2018 –$3,422; 2017 – $2,437). PSU activity during the year ended December 31, 2019 was as follows: Number of PSUs Weighted Average Grant Date Fair Value Per Unit Outstanding as of January 1, 2019 2,036,008 $ 9.59 Granted 641,206 15.34 Vested and issued (449,395 ) 6.02 Forfeited (462,843 ) 6.20 Outstanding as of December 31, 2019 1,764,976 $ 13.48 The weighted-average grant date fair value per unit of all PSUs granted in 2018 and 2017 was $12.75 and $12.00, respectively. The total fair value of PSUs vested and issued in 2019, 2018 and 2017 was $6,754, $1,992 and $3,445, respectively. Restricted Shares Restricted shares generally vest at the end of one year. Expense recognized for the year ended December 31, 2019 was $479 (2018 – $518; 2017 – $453). As of December 31, 2019, the total remaining unrecognized compensation cost related to restricted shares amounted to approximately $188 which will be amortized over the remaining vesting periods. Restricted share activity during the year ended December 31, 2019 was as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Per Share Outstanding as of January 1, 2019 31,130 $ 16.70 Granted 31,405 14.33 Vested (31,130 ) 16.70 Outstanding as of December 31, 2019 31,405 $ 14.33 Note 12. Shareholders’ Equity (continued) The weighted-average grant date fair value per share of all restricted shares granted in 2018 and 2017 was $16.70 and $11.80, respectively. The total fair value of restricted shares vested and issued in 2019, 2018 and 2017 was $466, $703 and $437, respectively.

Net Income (Loss) Per Common Sh

Net Income (Loss) Per Common Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Net Income (Loss) Per Common Share	Note 13. Net Income (Loss) Per Common Share The reconciliation of basic and diluted net income (loss) per share for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 Net income (loss) Basic and diluted $ (9,639 ) $ 128,589 $ 70,483 Net income (loss) per common share Basic $ (0.15 ) $ 1.97 $ 1.09 Diluted $ (0.15 ) $ 1.96 $ 1.08 Weighted average number of common shares outstanding: Basic (a) 65,553,196 65,133,467 64,915,955 Effect of dilutive shares: PSUs — 619,411 458,236 Restricted shares — 17,962 18,914 Diluted 65,553,196 65,770,840 65,393,105 (a) For the year ended December 31, 2019, the basic weighted average number of common shares outstanding excludes 31,405 restricted shares which have been issued, but have not vested as of December 31, 2019 (2018 – 31,130 restricted shares; 2017 – 43,635 restricted shares). 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, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 PSUs 1,764,976 — — Restricted shares 31,405 — —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2019
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Loss	Note 14. Accumulated Other Comprehensive Loss The change in accumulated other comprehensive loss by component (net of tax) for the years ended December 31, 2019 and 2018 was as follows: Foreign Currency Translation Adjustment Defined Benefit Pension and Other Post- Retirement Benefit Items Total Balance as of December 31, 2017 $ (50,101 ) $ (8,900 ) $ (59,001 ) Other comprehensive income (loss) before reclassifications (76,899 ) 7,022 (69,877 ) Amounts reclassified from accumulated other comprehensive loss — 708 708 Other comprehensive income (loss), net of taxes (76,899 ) 7,730 (69,169 ) Balance as of December 31, 2018 (127,000 ) (1,170 ) (128,170 ) Other comprehensive income (loss) before reclassifications 12,291 (944 ) 11,347 Amounts reclassified from accumulated other comprehensive loss — 263 263 Other comprehensive income (loss), net of taxes 12,291 (681 ) 11,610 Balance as of December 31, 2019 $ (114,709 ) $ (1,851 ) $ (116,560 )

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Note 15. Related Party Transactions The Company enters into related party transactions with its joint ventures. For the year ended December 31, 2019, pulp purchases from the Company’s 50% owned CPP mill, which are transacted at the CPP mill’s cost, were $96,763 (2018 – – – – –

Business Segment Information

Business Segment Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Business Segment Information	Note 16. Business 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 business segment, and the Friesau mill is a separate reportable business segment, wood products. The Company’s sandalwood business is included in Corporate and Other as it does not meet the criteria to be reported as a separate segment. 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. Note 1 6 . Business Segment Information (continued) Information about certain segment data for the years ended December 31, 2019, 2018 and 2017, was as follows: 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 Germany 419,472 53,734 — 473,206 China 430,508 — — 430,508 Other countries 438,946 52,105 7,351 498,402 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. December 31, 2018 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 Operating income (loss) $ 274,356 $ 6,203 $ (12,692 ) $ 267,867 Depreciation and amortization $ 87,628 $ 8,485 $ 616 $ 96,729 Purchase of property, plant and equipment $ 66,207 $ 20,682 $ 123 $ 87,012 Total assets (a) $ 1,698,071 $ 131,754 $ 145,910 $ 1,975,735 Revenues by major products Pulp $ 1,190,588 $ — $ — $ 1,190,588 Lumber — 168,663 — 168,663 Energy and chemicals 77,616 10,831 478 88,925 Wood residuals — 9,542 — 9,542 Total revenues $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 Revenues by geographical markets (b) U.S. $ 55,692 $ 52,770 $ — $ 108,462 Germany 499,620 73,854 — 573,474 China 291,657 — — 291,657 Other countries 421,235 62,412 478 484,125 Total revenues $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 (a) Total assets for the pulp segment includes the Company’s $62,574 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship – Note 16. Business Segment Information (continued) December 31, 2017 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,071,715 $ 97,430 $ — $ 1,169,145 Operating income (loss) $ 171,279 $ 5,610 $ (8,335 ) $ 168,554 Depreciation and amortization $ 80,833 $ 4,060 $ 401 $ 85,294 Purchase of property, plant and equipment $ 54,534 $ 3,197 $ 184 $ 57,915 Total assets $ 1,253,545 $ 116,320 $ 354,845 $ 1,724,710 Revenues by major products Pulp $ 979,645 $ — $ — $ 979,645 Lumber — 82,176 — 82,176 Energy and chemicals 92,070 8,872 — 100,942 Wood residuals — 6,382 — 6,382 Total revenues $ 1,071,715 $ 97,430 $ — $ 1,169,145 Revenues by geographical markets (a) U.S. $ 23,572 $ 20,060 $ — $ 43,632 Germany 421,895 47,146 — 469,041 China 292,231 — — 292,231 Other countries 334,017 30,224 — 364,241 Total revenues $ 1,071,715 $ 97,430 $ — $ 1,169,145 (a) Sales are attributed to countries based on the ship-to location provided by the customer. 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, 2019, the pulp segment sold $531 of residual fuel to the wood products segment (2018 – $1,343; 2017 – – The Company’s long-lived assets by geographic area based on location of the asset as of December 31, 2019 and December 31, 2018 were as follows: December 31, 2019 2018 Germany $ 646,101 $ 655,260 Canada 410,468 355,817 Australia 17,673 18,180 $ 1,074,242 $ 1,029,257 In 2019,

Financial Instruments and Fair

Financial Instruments and Fair Value Measurement	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Financial Instruments and Fair Value Measurement	Note 17. 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, 2019 and December 31, 2018 were as follows: Fair value measurements as of December 31, 2019 using: Description Level 1 Level 2 Level 3 Total Senior notes $ — $ 1,156,673 $ — $ 1,156,673 Fair value measurements as of December 31, 2018 using: Description Level 1 Level 2 Level 3 Total Revolving credit facility $ — $ 58,968 $ — $ 58,968 Senior notes — 965,000 — 965,000 $ — $ 1,023,968 $ — $ 1,023,968 The carrying value of the revolving credit facility classified as Level 2 approximates its 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, 2019 and December 31, 2018. However, fair value disclosure is required. The carrying value of the Company’s Senior Notes, net of note issuance costs is $1,087,932 as of December 31, 2019 (December 31, 2018 – 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. Concentrations of credit risk on the sale of pulp, lumber and other wood residuals are with customers and agents based primarily in Germany, China, the U.S. and Italy. The carrying amount of cash and cash equivalents of $351,085 and accounts receivable of $208,740, net of any allowances for losses, as of December 31, 2019, represents the Company’s maximum exposure to credit risk.

Lease Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lease Commitments	Note 1 8 . Lease Commitments The Company has finance leases primarily for rail cars and production equipment. The rail cars primarily have a remaining lease term of nine to 12 years with annual renewal options thereafter. The production equipment has a weighted average remaining lease term of nine 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 five to 12 years with options to renew for up to six years. The office leases have remaining terms of four to eight 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. The components of lease expense for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Lease cost: Operating lease cost $ 3,322 $ 2,655 $ 2,994 Finance lease cost: Amortization of right-of-use assets 3,768 3,595 3,435 Interest on lease liabilities 1,370 1,299 934 Total lease cost $ 8,460 $ 7,549 $ 7,363 Supplemental cash flow information related to leases for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 3,322 $ 2,655 $ 2,994 Operating cash flows from finance leases $ 1,370 $ 1,299 $ 934 Financing cash flows from finance leases $ 3,344 $ 3,462 $ 3,262 Note 1 8 . Lease Commitments (continued) Other information related to leases for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 Weighted average remaining lease term: Operating leases 7 years 7 years 8 years Finance leases 10 years 9 years 9 years Weighted average discount rate: Operating leases 7 % Finance leases 4 % 6 % 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. Supplemental balance sheet information related to leases as of December 31, 2019 and December 31, 2018 was as follows: December 31, 2019 2018 Operating Leases Operating lease right-of-use assets $ 13,004 Other current liabilities $ 2,484 Operating lease liabilities 10,520 Total operating lease liabilities $ 13,004 Finance Leases Property and equipment, gross $ 49,393 $ 44,756 Accumulated depreciation (16,571 ) (15,963 ) Property and equipment, net $ 32,822 $ 28,793 Other current liabilities $ 3,382 $ 4,911 Finance lease liabilities 31,103 24,669 Total finance lease liabilities $ 34,485 $ 29,580 As of December 31, 2019, maturities of lease liabilities were as follows: Finance Leases Operating Leases 2020 $ 4,472 $ 3,218 2021 4,343 3,071 2022 4,169 2,809 2023 4,288 2,087 2024 4,184 1,378 Thereafter 19,142 3,410 Total lease payments 40,598 15,973 Less: imputed interest (6,113 ) (2,969 ) Total lease liability $ 34,485 $ 13,004 Note 1 8 . Lease Commitments (continued) As of December 31, 2018, minimum lease payments under non-cancellable finance and operating leases were as follows: Finance Leases Operating Leases 2019 $ 6,302 $ 3,309 2020 3,601 2,963 2021 3,441 2,717 2022 3,278 2,557 2023 3,410 2,057 Thereafter 17,025 5,360 Total lease payments 37,057 $ 18,963 Less: imputed interest (7,477 ) Total lease liability $ 29,580 As of December 31, 2019, the Company has additional finance leases for rail cars that have not yet commenced. The leases have a term of 12 years with annual renewal options thereafter. The total payments over the term of the leases will be approximately $31,200. The leases will commence in 2020.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 19. 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, 2019, commitments under these contracts was approximately $209,533. (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.

The Company And Summary Of Si_2

The Company And Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
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 Market. Since acquiring Mercer Peace River Pulp Ltd. (“MPR”) in December 2018 it now 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 one sawmill in Germany. 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. The Company owns 100% of the economic interest in its subsidiaries with the exception of the 50% joint venture interest in an NBSK pulp mill 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.
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. The Company maintains an allowance for doubtful accounts at an amount estimated to cover the potential losses on certain 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 and financial position of the debtors. For certain customers, the Company receives a letter of credit prior to shipping its product.
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. 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 Note. The costs of major rebuilds, replacements and those expenditures that substantially increase the useful lives of existing property, plant and equipment are capitalized, as well as interest costs associated with major capital projects until ready for their intended use. 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	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. Operating leases are included in “Operating lease right-of-use assets”, “Accounts payable and other”, and “Operating lease liabilities” in the Consolidated Balance Sheets. Finance leases are included in “Property, plant and equipment, net”, “Accounts payable and other”, and “Finance lease liabilities” in the Consolidated Balance Sheets. 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 lease right-of-use assets represent the Company’s right to use an underlying asset for the term of the lease, and the related liabilities represent the Company’s obligation to make the lease payments arising from the lease. Operating lease right-of-use assets and the related liabilities are recognized at the lease commencement date based on the present value of the 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 investment grants from federal 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. 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. 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 Note.
Sandalwood Tree Plantations	Sandalwood Tree Plantations Sandalwood tree plantations are measured at the lower of cost, which includes both 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. Note 1. The Company and Summary of Significant Accounting Policies (continued) 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 MPR 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 at the beginning of the year. The Company recognizes the net funded status of the plan. In addition, hourly-paid employees at the Celgar mill are covered by a multiemployer pension plan 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 shareholders’ equity. 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 (expenses)” 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 shareholders’ equity.
Revenue Recognition	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. Note 1. The Company and Summary of Significant Accounting Policies (continued) 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 Business 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 to 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.
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 (expenses)” 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.
New Accounting Pronouncements	New Accounting Pronouncements Accounting Pronouncements Adopted In February 2016, the FASB established Topic 842, Leases, by issuing Accounting Standards Update (“ASU”) 2016-02, Leases, which requires lessees to recognize virtually all leases on the balance sheet, by recording a right-of-use asset and corresponding liability. Additionally, the update also requires additional disclosures in regards to the nature, timing and uncertainty of cash flows arising from leases. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU 2018-10, Codification Improvements to Topic 842, Leases; and ASU 2018-11, Leases: Targeted Improvements. These updates were effective for financial statements issued for fiscal years beginning after December 15, 2018. The Company adopted these updates on January 1, 2019 using the modified retrospective method with no restatement of comparative financial information. The new standard provides a number of optional practical expedients in transition and the Company elected to use all of them on adoption. Adoption of the standard resulted in recognition of right-of-use assets and lease liabilities for operating leases of $14,700 as of January 1, 2019. The standard did not impact the Consolidated Statements of Operations or the Consolidated Statements of Cash Flows. The Company’s lease disclosure has been included in the Lease Commitments Note. Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the current incurred loss impairment method with a method that reflects expected credit losses. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326): Targeted Transition Relief, which provides entities with targeted transition relief that is intended to increase comparability of financial statement information for some entities that otherwise would have measured similar financial instruments using different measurement methodologies. These updates are effective for financial statements issued after December 15, 2019, with early adoption permitted. This guidance should be applied using the modified-retrospective approach. The Company will adopt these updates on January 1, 2020. The Company is currently evaluating the provisions of this guidance but believes the adoption of these updates will not have a significant impact on the consolidated financial statements as the Company’s credit risk associated with its sales is currently managed through the purchase of credit insurance, 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 performance. The Company is exposed to credit risk in the event of non-performance by counterparties to its financial instruments. The Company attempts to minimize this exposure by entering into contracts with counterparties that are believed to be of high credit quality. In December 2019, the FASB issued ASU 2019-12, Income Taxes – Simplifying the Accounting for Income Taxes, which removes certain exceptions for investments, intraperiod tax allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. This update is effective for financial statements issued for fiscal years beginning after December 15, 2020, with early adoption permitted. The Company is currently evaluating the impact of this update but believes it will not have a significant impact on the consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2019
Business Acquisition [Line Items]
Schedule of Unaudited Proforma Information	The following unaudited pro forma information represents the Company’s results of operations as if the acquisition of MPR had occurred on January 1, 2017. This pro forma information does not purport to be indicative of the results that would have occurred for the periods presented or that may be expected in the future. For the Year Ended December 31, 2018 2017 Revenues $ 1,906,697 $ 1,503,446 Net income $ 189,431 $ 42,267
MPR
Business Acquisition [Line Items]
Schedule of Allocation of Purchase Price to Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the Company’s allocation of the purchase price to the fair value of the assets acquired and liabilities assumed at the acquisition date: Purchase Price Allocation Current assets $ 134,748 Property, plant and equipment 214,260 Investment in joint ventures 55,325 Amortizable intangible assets, timber cutting rights (a) 37,634 Other long term-assets 392 Total assets acquired 442,359 Current liabilities 35,578 Pension obligations 9,747 Deferred income tax 49,907 Other long-term liabilities 3,097 Total liabilities assumed 98,329 Net assets acquired $ 344,030 (a) The timber cutting rights are being amortized on a straight-line basis over 30 years. The fair value of the timber cutting rights was determined through the market approach utilizing comparable market data. The values were then discounted at a rate of 12% for 30 years to arrive at the fair value.
Mercer Sandalwood
Business Acquisition [Line Items]
Schedule of Allocation of Purchase Price to Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the Company’s allocation of the purchase price to the fair value of the assets acquired and liabilities assumed from Mercer Sandalwood at the acquisition date: Purchase Price Allocation Net working capital $ 5,111 Property, plant and equipment 18,490 Sandalwood tree plantations (a) 14,587 Deferred income tax liability (2,464 ) Net assets acquired $ 35,724 ( a ) The fair value of the sandalwood tree plantations was determined using the discounted cash flows method using a rate of 10.5%.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 Trade, net of allowance of $164 (2018 – $nil) $ 172,626 $ 230,426 Other 36,114 22,266 $ 208,740 $ 252,692

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Inventory Net [Abstract]
Components of Inventories	Inventories as of December 31, 2019 and December 31, 2018, were comprised of the following: December 31, 2019 2018 Raw materials $ 99,754 $ 103,983 Finished goods 77,815 114,304 Spare parts and other 95,030 85,526 $ 272,599 $ 303,813

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment as of December 31, 2019 and December 31, 2018, was comprised of the following: Estimated Useful Lives December 31, (Years) 2019 2018 Land $ 54,385 $ 54,832 Buildings 10 - 50 255,233 251,408 Production and other equipment 5 - 25 1,850,377 1,698,132 2,159,995 2,004,372 Less: accumulated depreciation (1,085,753 ) (975,115 ) $ 1,074,242 $ 1,029,257

Amortizable Intangible Assets (

Amortizable Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Amortizable Intangible Assets	Amortizable intangible assets as of December 31, 2019 and December 31, 2018, were comprised of the following: Estimated December 31, 2019 December 31, 2018 Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Energy sales agreement 11 $ 16,909 $ (4,182 ) $ 12,727 $ 17,234 $ (1,977 ) $ 15,257 Timber cutting rights 30 38,767 (1,369 ) 37,398 34,139 — 34,139 Software and other intangible assets 5 24,999 (21,753 ) 3,246 23,731 (19,200 ) 4,531 $ 80,675 $ (27,304 ) $ 53,371 $ 75,104 $ (21,177 ) $ 53,927
Schedule of Amortization Expense Related to Intangible Assets	Amortization expense for the next five years related to intangible assets as of December 31, 2019 is expected to be as follows: 2020 2021 2022 2023 2024 Amortization expense $ 4,284 $ 4,007 $ 3,272 $ 2,919 $ 2,907

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Other Assets [Abstract]
Schedule of Other Long-Term Assets	Other long-term assets as of December 31, 2019 and December 31, 2018, were comprised of the following: December 31, 2019 2018 Sandalwood tree plantations $ 21,603 $ 13,258 Other 4,435 4,646 $ 26,038 $ 17,904

Accounts Payable and Other (Tab

Accounts Payable and Other (Tables)	12 Months Ended
	Dec. 31, 2019
Payables And Accruals [Abstract]
Schedule of Accounts Payable and Other	Accounts payable and other as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 Trade payables $ 73,721 $ 36,333 Accrued expenses 111,696 95,936 Interest payable 33,198 16,861 Income tax payable 28,080 29,818 Legal cost award payable — 6,951 Other 8,849 8,585 $ 255,544 $ 194,484

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Debt	Debt as of December 31, 2019 and December 31, 2018, was comprised of the following: December 31, 2019 2018 2022 Senior Notes, principal amount $100,000 (a) $ — $ 98,918 2024 Senior Notes, principal amount $250,000 (a) 246,911 246,154 2025 Senior Notes, principal amount $550,000 (a) 545,665 342,761 2026 Senior Notes, principal amount $300,000 (a) 295,356 294,588 Credit arrangements €200 million joint revolving credit facility (b) — 58,968 C$60 million revolving credit facility (c) — C$40 million revolving credit facility (d) — — €2.6 million demand loan (e) — — $ 1,087,932 $ 1,041,389 (a) In 2018, the Company issued $350,000 in aggregate principal amount of 7.375% senior notes which mature on January 15, 2025 (the “2025 Senior Notes”). The 2025 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $342,682 after deducting the underwriter’s discount and offering expenses. The net proceeds together with cash on hand were used to finance the acquisition of MPR. In October 2019, the Company issued an additional $200,000 in aggregate principal amount of 2025 Senior Notes at a price of 102.75% of their principal amount for a yield to worst of 6.435%. In 2017, the Company issued $300,000 in aggregate principal amount of 5.50% senior notes which mature on January 15, 2026 (the “2026 Senior Notes”). The 2026 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $293,795 after deducting the underwriter’s discount and offering expenses. In 2018, the net proceeds, together with cash on hand, were used to redeem $300,000 in aggregate principal amount of the 2022 Senior Notes. In connection with this redemption, the Company recorded a loss on settlement of debt of $21,515 in the Consolidated Statements of Operations. In 2017, the Company issued $250,000 in aggregate principal amount of 6.50% senior notes which mature on February 1, 2024 (the “2024 Senior Notes” and collectively with the 2025 Senior Notes and 2026 Senior Notes, the “Senior Notes”). The 2024 Senior Notes were issued at a price of 100% of their principal amount. The net proceeds of the offering were $244,711 after deducting the underwriter’s discount and offering expenses. The net proceeds, together with cash on hand, were used to redeem $227,000 of remaining aggregate principal amount of outstanding senior notes due 2019, to finance the acquisition of the Friesau mill and for general working capital purposes. In connection with this redemption, the Company recorded a loss on settlement of debt of $10,696 in the Consolidated Statements of Operations. The Senior Notes are general unsecured senior obligations of the Company. They rank equal in right of payment with all existing and future unsecured senior indebtedness of the Company and are senior in right of payment to any current or future subordinated indebtedness of the Company. The Senior Notes are effectively junior in right of payment to all existing and future secured indebtedness, to the extent of the assets securing such indebtedness, and all indebtedness and liabilities of the Company’s subsidiaries. The Company may redeem all or a part of the 2025 Senior Notes or 2026 Senior Notes, upon not less than 10 days’ or more than 60 days’ notice and the Company may redeem all or a part of the 2024 Senior Notes, upon not less than 30 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date. Note 9. Debt (continued) The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the outstanding Senior Notes: 2024 Senior Notes 2025 Senior Notes 2026 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage February 1, 2020 103.250 % January 15, 2021 103.688 % January 15, 2021 102.750 % February 1, 2021 101.625 % January 15, 2022 101.844 % January 15, 2022 101.375 % February 1, 2022 and thereafter 100.000 % January 15, 2023 and thereafter 100.000 % January 15, 2023 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, 2019, approximately €11.0 million ($12,410) of this facility was supporting bank guarantees leaving approximately €189.0 million ($212,270) available. (c) A C$60.0 million revolving credit facility for MPR that matures in February 2024. 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 1.25% 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 are collateralized by, among other things, the mill’s inventories and accounts receivable. As of December 31, 2019, approximately C$1.0 million ($754) was supporting letters of credit leaving approximately C$59.0 million ($45,440) available. (d) A C$40.0 million revolving credit facility for the Celgar mill that matures in July 2023. Borrowings under the facility are collateralized by the mill’s inventory, accounts receivable, general intangibles and capital assets and are restricted by a borrowing base calculated on the mill’s inventories and accounts receivable. When the borrowing capacity is less than 25% of the total facility the Canadian dollar denominated amounts bear interest at bankers acceptance plus 1.50% or Canadian prime and the U.S. dollar denominated amounts bear interest at LIBOR plus 1.50% or U.S. base. When the borrowing capacity is greater than or equal to 25% of the total facility, the respective bankers acceptance or LIBOR margins are reduced by 0.25% and the Canadian prime or U.S. base margins are reduced by 0.125%. As of December 31, 2019, approximately C$1.7 million ($1,308) was supporting letters of credit leaving approximately C$38.3 million ($29,488) available. (e) A €2.6 million demand loan at the Rosenthal mill 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, 2019, approximately €2.6 million ($2,867) of this facility was supporting bank guarantees leaving approximately $nil available.
Principal Maturities of Debt	The maturities of the principal portion of debt as of December 31, 2019 were as follows: 2020 $ — 2021 — 2022 — 2023 — 2024 250,000 Thereafter 850,000 $ 1,100,000
Debt Redemption Period for Outstanding Senior Notes	Note 9. Debt (continued) The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the outstanding Senior Notes: 2024 Senior Notes 2025 Senior Notes 2026 Senior Notes 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage 12 Month Period Beginning Percentage February 1, 2020 103.250 % January 15, 2021 103.688 % January 15, 2021 102.750 % February 1, 2021 101.625 % January 15, 2022 101.844 % January 15, 2022 101.375 % February 1, 2022 and thereafter 100.000 % January 15, 2023 and thereafter 100.000 % January 15, 2023 and thereafter 100.000 %

Pension And Other Post-Retire_2

Pension And Other Post-Retirement Benefit Obligations (Tables)	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	Information about the Celgar and MPR defined benefit plans, in aggregate for the year ended December 31, 2019 was as follows: 2019 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2018 $ 95,996 $ 14,859 $ 110,855 Service cost 2,868 271 3,139 Interest cost 3,516 548 4,064 Benefit payments (3,703 ) (647 ) (4,350 ) Actuarial losses (gains) 9,228 (2,477 ) 6,751 Foreign currency exchange rate changes 5,091 698 5,789 Benefit obligation, December 31, 2019 112,996 13,252 126,248 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2018 84,122 — 84,122 Actual returns 11,269 — 11,269 Contributions 3,820 647 4,467 Benefit payments (3,703 ) (647 ) (4,350 ) Foreign currency exchange rate changes 4,483 — 4,483 Fair value of plan assets, December 31, 2019 99,991 — 99,991 Funded status, December 31, 2019 $ (13,005 ) $ (13,252 ) $ (26,257 ) Components of the net benefit cost recognized Service cost $ 2,868 $ 271 $ 3,139 Interest cost 3,516 548 4,064 Expected return on plan assets (4,017 ) — (4,017 ) Amortization of unrecognized items 941 (678 ) 263 Net benefit cost $ 3,308 $ 141 $ 3,449 Information about the Celgar and, from the date of acquisition, MPR defined benefit plans, in aggregate for the year ended December 31, 2018 was as follows: 2018 Pension Other Post- Retirement Benefits Total Change in benefit obligation Benefit obligation, December 31, 2017 $ 38,330 $ 20,788 $ 59,118 Benefit obligation transferred, MPR 62,545 — 62,545 Service cost 269 467 736 Interest cost 1,409 709 2,118 Benefit payments (2,346 ) (594 ) (2,940 ) Actuarial losses (gains) 456 (5,065 ) (4,609 ) Foreign currency exchange rate changes (4,667 ) (1,446 ) (6,113 ) Benefit obligation, December 31, 2018 95,996 14,859 110,855 Reconciliation of fair value of plan assets Fair value of plan assets, December 31, 2017 37,057 — 37,057 Fair value plan assets transferred, MPR 52,740 — 52,740 Actual returns 378 — 378 Contributions 539 594 1,133 Benefit payments (2,346 ) (594 ) (2,940 ) Foreign currency exchange rate changes (4,246 ) — (4,246 ) Fair value of plan assets, December 31, 2018 84,122 — 84,122 Funded status, December 31, 2018 $ (11,874 ) $ (14,859 ) $ (26,733 ) Components of the net benefit cost recognized Service cost $ 269 $ 467 $ 736 Interest cost 1,409 709 2,118 Expected return on plan assets (1,694 ) — (1,694 ) Amortization of unrecognized items 915 (207 ) 708 Net benefit cost $ 899 $ 969 $ 1,868
Estimated Future Benefit Payments	Estimated future benefit p ayments Pension Other Post-Retirement Benefits 2020 $ 4,355 $ 516 2021 $ 4,510 $ 544 2022 $ 4,696 $ 568 2023 $ 4,844 $ 593 2024 $ 5,052 $ 618 2025-2029 $ 28,198 $ 3,450
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, 2019, 2018 and 2017 were as follows for Celgar’s defined benefit plan: December 31, 2019 2018 2017 Benefit obligations Discount rate 3.00 % 3.14 % 3.50 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Net benefit cost for year ended Discount rate 3.14 % 3.50 % 3.80 % Rate of compensation increase 2.50 % 2.50 % 2.50 % Expected rate of return on plan assets 3.90 % 4.40 % 6.00 % 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, 2019 and 2018 were as follows for MPR’s defined benefit plan: December 31, 2019 2018 Benefit obligations Discount rate 3.20 % 3.90 % Rate of compensation increase 2.75 % 2.75 % Net benefit cost for year ended Discount rate 3.90 % 3.95 % Rate of compensation increase 2.75 % 3.25 % Expected rate of return on plan assets 5.12 % 5.15 %
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, 2019 and December 31, 2018 were as follows: December 31, 2019 2018 Health care cost trend rate assumed for next year 5.00% 5.50% 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 2021 2021
Schedule of Defined Benefit Pension Plans' Assets Fair Value Measurements	The following table presents the Celgar and MPR defined benefit pension plans’ assets fair value measurements as of December 31, 2019 under the fair value hierarchy: Fair value measurements as of December 31, 2019 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ 43,800 $ — $ — $ 43,800 Debt securities 55,757 — — 55,757 Cash 69 — — 69 Other 365 — — 365 Total assets $ 99,991 $ — $ — $ 99,991 The following table presents the Celgar and MPR defined benefit pension plans’ assets fair value measurements as of December 31, 2018 under the fair value hierarchy: Fair value measurements as of December 31, 2018 using: Asset Category Level 1 Level 2 Level 3 Total Equity securities $ 31,230 $ — $ — $ 31,230 Debt securities, including buy-in annuities 49,724 — — 49,724 Cash 2,054 — — 2,054 Other 1,114 — — 1,114 Total assets $ 84,122 $ — $ — $ 84,122
Schedule of Multiemployer Plan	Plan details for the years ended December 31, 2019, 2018 and 2017 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 2019 2018 2017 The Pulp and Paper Industry Pension Plan P085324 April 30, 2021 Yes No No

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Summary of Income (Loss) Before Provision for Income Taxes By Taxing Jurisdiction	Income (loss) before provision for income taxes by taxing jurisdiction for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 U.S. $ (43,408 ) $ (69,202 ) $ (41,635 ) Foreign 52,995 246,472 145,570 $ 9,587 $ 177,270 $ 103,935
Schedule of Provision for Income Taxes Recognized in Consolidated Statements of Operations	Note 11. Income Taxes (continued) Provision for income taxes recognized in the Consolidated Statements of Operations for the years ended December 31, 2019, 2018 and 2017 was comprised of the following: Year Ended December 31, 2019 2018 2017 U.S. Federal and State current income tax provision $ 342 $ — $ — Foreign current income tax provision 26,757 32,085 11,396 Total current income tax provision 27,099 32,085 11,396 Foreign deferred income tax provision (benefit) (7,873 ) 16,596 22,056 Total income tax provision $ 19,226 $ 48,681 $ 33,452
Reconciliation of Effective Tax Rate	Differences between the U.S. Federal statutory and the Company’s effective rates for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 U.S. Federal statutory rate 21% 21% 35% U.S. Federal statutory rate on income before provision for income taxes $ (2,013 ) $ (37,227 ) $ (36,377 ) Tax differential on foreign income (5,368 ) (17,511 ) 10,398 Effect of foreign earnings (a) (13,747 ) (51,639 ) (3,584 ) Change in undistributed earnings — — 13,297 Change in tax rate — — (26,627 ) Valuation allowance (11,643 ) 64,573 5,750 Tax benefit of partnership structure 3,841 4,208 4,937 Non-taxable foreign subsidies 3,200 2,908 2,735 True-up of prior year taxes 6,031 (9,877 ) (3,685 ) Foreign exchange on valuation allowance 356 (878 ) 1,953 Foreign exchange on settlement of debt — 879 1,342 Other 117 (4,117 ) (3,591 ) Provision for income taxes $ (19,226 ) $ (48,681 ) $ (33,452 ) (a) Primarily due to the impact of the GILTI provision .
Deferred Tax Assets and Liabilities	Deferred income tax assets and liabilities as of December 31, 2019 and December 31, 2018 were comprised of the following: December 31, 2019 2018 German tax loss carryforwards $ 31,317 $ 35,364 U.S. tax loss carryforwards and credits 4,671 8,982 Canadian tax loss carryforwards 16,392 — Basis difference between income tax and financial reporting with respect to operating pulp mills (132,100 ) (138,541 ) Long-term debt (7,388 ) (7,232 ) Payable and accrued expenses 577 4,582 Deferred pension liability 11,270 9,657 Finance leases 10,072 8,269 Research and development expense pool 3,397 3,150 Other (4,050 ) (4,848 ) (65,842 ) (80,617 ) Valuation allowance (22,759 ) (11,116 ) Net deferred income tax liability $ (88,601 ) $ (91,733 ) Comprised of: Deferred income tax asset $ 1,246 $ 1,374 Deferred income tax liability (89,847 ) (93,107 ) Net deferred income tax liability $ (88,601 ) $ (91,733 )
Summary of Tax Carryforwards	Note 11. Income Taxes (continued) The following table details the scheduled expiration dates of the Company’s net operating loss, interest and income tax credit carryforwards as of December 31, 2019: Amount Expiration U.S. Interest $ 21,800 Indefinite Germany Net operating loss $ 69,300 Indefinite Interest $ 82,000 Indefinite Canada Net operating loss $ 60,700 2036 – 2039 Scientific research and experimental development tax credit $ 4,700 2030 – 2037 Australia Net operating loss $ 11,100 Indefinite
Summary of Changes in Valuation Allowance	Changes in valuation allowances related to net deferred tax assets for the years ended December 31, 2019 and 2018 were as follows: December 31, 2019 2018 Balance as of January 1 $ 11,116 $ 75,689 Additions (reversals) U.S. (4,503 ) (37,709 ) Canada 16,188 (26,384 ) Australia (398 ) 398 The impact of changes in foreign exchange rates 356 (878 ) Balance as of December 31 $ 22,759 $ 11,116

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity [Line Items]
Summary of Dividends Declared	The Company’s board of directors declared quarterly dividends during the years ended December 31, 2019 and 2018 as follows: Date Declared Dividend Per Common Share Amount February 14, 2019 $ 0.1250 $ 8,204 May 2, 2019 0.1375 9,025 August 1, 2019 0.1375 9,025 October 31, 2019 0.1375 9,025 $ 0.5375 $ 35,279 Date Declared Dividend Per Common Share Amount February 15, 2018 $ 0.1250 $ 8,147 May 3, 2018 0.1250 8,150 July 26, 2018 0.1250 8,150 October 25, 2018 0.1250 8,150 $ 0.5000 $ 32,597
Performance Share Units
Stockholders' Equity [Line Items]
Summary of Share Activity	PSU activity during the year ended December 31, 2019 was as follows: Number of PSUs Weighted Average Grant Date Fair Value Per Unit Outstanding as of January 1, 2019 2,036,008 $ 9.59 Granted 641,206 15.34 Vested and issued (449,395 ) 6.02 Forfeited (462,843 ) 6.20 Outstanding as of December 31, 2019 1,764,976 $ 13.48
Restricted Stock
Stockholders' Equity [Line Items]
Summary of Share Activity	Restricted share activity during the year ended December 31, 2019 was as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Per Share Outstanding as of January 1, 2019 31,130 $ 16.70 Granted 31,405 14.33 Vested (31,130 ) 16.70 Outstanding as of December 31, 2019 31,405 $ 14.33

Net Income (Loss) Per Common _2

Net Income (Loss) Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Net Income (Loss) Per Share	The reconciliation of basic and diluted net income (loss) per share for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 Net income (loss) Basic and diluted $ (9,639 ) $ 128,589 $ 70,483 Net income (loss) per common share Basic $ (0.15 ) $ 1.97 $ 1.09 Diluted $ (0.15 ) $ 1.96 $ 1.08 Weighted average number of common shares outstanding: Basic (a) 65,553,196 65,133,467 64,915,955 Effect of dilutive shares: PSUs — 619,411 458,236 Restricted shares — 17,962 18,914 Diluted 65,553,196 65,770,840 65,393,105 (a) For the year ended December 31, 2019, the basic weighted average number of common shares outstanding excludes 31,405 restricted shares which have been issued, but have not vested as of December 31, 2019 (2018 – 31,130 restricted shares; 2017 – 43,635 restricted shares).
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, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 PSUs 1,764,976 — — Restricted shares 31,405 — —

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 was as follows: Foreign Currency Translation Adjustment Defined Benefit Pension and Other Post- Retirement Benefit Items Total Balance as of December 31, 2017 $ (50,101 ) $ (8,900 ) $ (59,001 ) Other comprehensive income (loss) before reclassifications (76,899 ) 7,022 (69,877 ) Amounts reclassified from accumulated other comprehensive loss — 708 708 Other comprehensive income (loss), net of taxes (76,899 ) 7,730 (69,169 ) Balance as of December 31, 2018 (127,000 ) (1,170 ) (128,170 ) Other comprehensive income (loss) before reclassifications 12,291 (944 ) 11,347 Amounts reclassified from accumulated other comprehensive loss — 263 263 Other comprehensive income (loss), net of taxes 12,291 (681 ) 11,610 Balance as of December 31, 2019 $ (114,709 ) $ (1,851 ) $ (116,560 )

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Information about certain segment data for the years ended December 31, 2019, 2018 and 2017, was as follows: 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 Germany 419,472 53,734 — 473,206 China 430,508 — — 430,508 Other countries 438,946 52,105 7,351 498,402 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. December 31, 2018 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 Operating income (loss) $ 274,356 $ 6,203 $ (12,692 ) $ 267,867 Depreciation and amortization $ 87,628 $ 8,485 $ 616 $ 96,729 Purchase of property, plant and equipment $ 66,207 $ 20,682 $ 123 $ 87,012 Total assets (a) $ 1,698,071 $ 131,754 $ 145,910 $ 1,975,735 Revenues by major products Pulp $ 1,190,588 $ — $ — $ 1,190,588 Lumber — 168,663 — 168,663 Energy and chemicals 77,616 10,831 478 88,925 Wood residuals — 9,542 — 9,542 Total revenues $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 Revenues by geographical markets (b) U.S. $ 55,692 $ 52,770 $ — $ 108,462 Germany 499,620 73,854 — 573,474 China 291,657 — — 291,657 Other countries 421,235 62,412 478 484,125 Total revenues $ 1,268,204 $ 189,036 $ 478 $ 1,457,718 (a) Total assets for the pulp segment includes the Company’s $62,574 investment in joint ventures, primarily for the CPP mill. (b) Sales are attributed to countries based on the ship – Note 16. Business Segment Information (continued) December 31, 2017 Pulp Wood Products Corporate and Other Consolidated Revenues from external customers $ 1,071,715 $ 97,430 $ — $ 1,169,145 Operating income (loss) $ 171,279 $ 5,610 $ (8,335 ) $ 168,554 Depreciation and amortization $ 80,833 $ 4,060 $ 401 $ 85,294 Purchase of property, plant and equipment $ 54,534 $ 3,197 $ 184 $ 57,915 Total assets $ 1,253,545 $ 116,320 $ 354,845 $ 1,724,710 Revenues by major products Pulp $ 979,645 $ — $ — $ 979,645 Lumber — 82,176 — 82,176 Energy and chemicals 92,070 8,872 — 100,942 Wood residuals — 6,382 — 6,382 Total revenues $ 1,071,715 $ 97,430 $ — $ 1,169,145 Revenues by geographical markets (a) U.S. $ 23,572 $ 20,060 $ — $ 43,632 Germany 421,895 47,146 — 469,041 China 292,231 — — 292,231 Other countries 334,017 30,224 — 364,241 Total revenues $ 1,071,715 $ 97,430 $ — $ 1,169,145 (a) 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, 2019 and December 31, 2018 were as follows: December 31, 2019 2018 Germany $ 646,101 $ 655,260 Canada 410,468 355,817 Australia 17,673 18,180 $ 1,074,242 $ 1,029,257

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and December 31, 2018 were as follows: Fair value measurements as of December 31, 2019 using: Description Level 1 Level 2 Level 3 Total Senior notes $ — $ 1,156,673 $ — $ 1,156,673 Fair value measurements as of December 31, 2018 using: Description Level 1 Level 2 Level 3 Total Revolving credit facility $ — $ 58,968 $ — $ 58,968 Senior notes — 965,000 — 965,000 $ — $ 1,023,968 $ — $ 1,023,968

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Components of Lease Expense	The components of lease expense for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Lease cost: Operating lease cost $ 3,322 $ 2,655 $ 2,994 Finance lease cost: Amortization of right-of-use assets 3,768 3,595 3,435 Interest on lease liabilities 1,370 1,299 934 Total lease cost $ 8,460 $ 7,549 $ 7,363
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases for the years ended December 31, 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 3,322 $ 2,655 $ 2,994 Operating cash flows from finance leases $ 1,370 $ 1,299 $ 934 Financing cash flows from finance leases $ 3,344 $ 3,462 $ 3,262
Other Information Related to Leases	Other information related to leases for the years ended December 31, 2019, 2018 and 2017 was as follows: Year Ended December 31, 2019 2018 2017 Weighted average remaining lease term: Operating leases 7 years 7 years 8 years Finance leases 10 years 9 years 9 years Weighted average discount rate: Operating leases 7 % Finance leases 4 % 6 % 4 %
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases as of December 31, 2019 and December 31, 2018 was as follows: December 31, 2019 2018 Operating Leases Operating lease right-of-use assets $ 13,004 Other current liabilities $ 2,484 Operating lease liabilities 10,520 Total operating lease liabilities $ 13,004 Finance Leases Property and equipment, gross $ 49,393 $ 44,756 Accumulated depreciation (16,571 ) (15,963 ) Property and equipment, net $ 32,822 $ 28,793 Other current liabilities $ 3,382 $ 4,911 Finance lease liabilities 31,103 24,669 Total finance lease liabilities $ 34,485 $ 29,580
Schedule of Maturities of Lease Liabilities	As of December 31, 2019, maturities of lease liabilities were as follows: Finance Leases Operating Leases 2020 $ 4,472 $ 3,218 2021 4,343 3,071 2022 4,169 2,809 2023 4,288 2,087 2024 4,184 1,378 Thereafter 19,142 3,410 Total lease payments 40,598 15,973 Less: imputed interest (6,113 ) (2,969 ) Total lease liability $ 34,485 $ 13,004
Minimum Lease Payments Under Non-cancellable Finance and Operating Leases	As of December 31, 2018, minimum lease payments under non-cancellable finance and operating leases were as follows: Finance Leases Operating Leases 2019 $ 6,302 $ 3,309 2020 3,601 2,963 2021 3,441 2,717 2022 3,278 2,557 2023 3,410 2,057 Thereafter 17,025 5,360 Total lease payments 37,057 $ 18,963 Less: imputed interest (7,477 ) Total lease liability $ 29,580

The Company and Summary of Si_3

The Company and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)mill	Jan. 01, 2019USD ($)	Dec. 31, 2018mill	Dec. 10, 2018
Summary Of Significant Accounting Policies [Line Items]
Number of pulp mills	4		4
Net actuarial gain (loss) percent that is exceeded for amortization	10.00%
Right-of-use assets for operating leases | $	$ 13,004	$ 14,700
Lease liabilities for operating leases | $	$ 13,004	$ 14,700
MPR - CPP
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	50.00%		50.00%	50.00%
MPR - Peace River
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	100.00%			100.00%
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

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Dec. 10, 2018	Oct. 18, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Payments to acquire business for cash				$ 6,380	$ 380,312	$ 61,627
Acquisition commitment fee				$ 0	$ 5,250	0
MPR - Peace River
Business Acquisition [Line Items]
Ownership percentage		100.00%		100.00%
MPR - CPP
Business Acquisition [Line Items]
Ownership percentage		50.00%		50.00%	50.00%
MPR - PRLLP
Business Acquisition [Line Items]
Ownership percentage		50.00%
Mercer Forestry Services Ltd
Business Acquisition [Line Items]
Payments to acquire business for cash	$ 6,938
Acquisition related costs				$ 265
MPR
Business Acquisition [Line Items]
Acquisition related costs					$ 1,871
Acquisitions, Consideration Transferred		$ 344,030
Revenues					29,907
Net loss					978
Acquisition commitment fee					5,250
Additional interest expense related to debt issued to finance acquisition					25,190	26,989
Additional depreciation expense					11,679	$ 9,776
Mercer Sandalwood
Business Acquisition [Line Items]
Acquisition related costs					777
Acquisitions, Consideration Transferred			$ 35,724
Revenues					478
Net loss					$ 907

Acquisitions - Schedule of Allo

Acquisitions - Schedule of Allocation of Purchase Price to Fair Value of Assets Acquired and Liabilities Assumed - (Details) - USD ($) $ in Thousands	Dec. 10, 2018	Oct. 18, 2018
MPR
Business Acquisition [Line Items]
Current assets	$ 134,748
Property, plant and equipment	214,260
Investment in joint ventures	55,325
Amortizable intangible assets, timber cutting rights	37,634
Other long term-assets	392
Total assets acquired	442,359
Current liabilities	35,578
Pension obligations	9,747
Deferred income tax	49,907
Other long-term liabilities	3,097
Total liabilities assumed	98,329
Net assets acquired	344,030
Deferred income tax liability	$ (49,907)
Mercer Sandalwood
Business Acquisition [Line Items]
Property, plant and equipment		$ 18,490
Deferred income tax		2,464
Net assets acquired		35,724
Net working capital		5,111
Sandalwood tree plantations		14,587
Deferred income tax liability		$ (2,464)

Acquisitions - Schedule of Al_2

Acquisitions - Schedule of Allocation of Purchase Price to Fair Value of Assets Acquired and Liabilities Assumed (Parenthetical) (Details)	Dec. 10, 2018	Dec. 31, 2019	Oct. 18, 2018
Business Acquisition [Line Items]
Time period timber cutting rights discounted	30 years
Measurement Input, Discount Rate
Business Acquisition [Line Items]
Sandalwood tree plantations, measurement input			10.50%
MPR
Business Acquisition [Line Items]
Discount rate used to value timber cutting rights	12.00%
Timber cutting rights
Business Acquisition [Line Items]
Intangible assets, useful life	30 years	30 years

Acquisitions - Schedule of Unau

Acquisitions - Schedule of Unaudited Proforma Information (Details) - MPR - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Revenues	$ 1,906,697	$ 1,503,446
Net income	$ 189,431	$ 42,267

Accounts Receivable - Schedule

Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable [Line Items]
Accounts receivable	$ 208,740	$ 252,692
Trade accounts receivable
Accounts Receivable [Line Items]
Accounts receivable	172,626	230,426
Other non-trade receivables
Accounts Receivable [Line Items]
Accounts receivable	$ 36,114	$ 22,266

Accounts Receivable - Schedul_2

Accounts Receivable - Schedule of Accounts Receivable (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade accounts receivable
Accounts Receivable [Line Items]
Allowance	$ 164	$ 0

Inventories - Components of Inv

Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Net [Abstract]
Raw materials	$ 99,754	$ 103,983
Finished goods	77,815	114,304
Spare parts and other	95,030	85,526
Inventories	$ 272,599	$ 303,813

Inventories - Additional Inform

Inventories - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Inventory [Line Items]
Inventory impairment	$ 9,200
Raw Materials
Inventory [Line Items]
Inventory write-down	3,500
Finished Goods Inventory
Inventory [Line Items]
Inventory write-down	5,700
Canadian Pulp Mills
Inventory [Line Items]
Inventory impairment	$ 23,000

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,159,995	$ 2,004,372
Less: accumulated depreciation	(1,085,753)	(975,115)
Property, plant and equipment, net	1,074,242	1,029,257
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	54,385	54,832
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 255,233	251,408
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	$ 1,850,377	$ 1,698,132
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_2

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Unamortized government grants	$ 190,571	$ 211,532
Long-lived assets carrying value	1,074,242	1,029,257
Asset retirement obligation	9,516	$ 8,752
Canadian Pulp Mills
Property, Plant and Equipment [Line Items]
Long-lived assets carrying value	$ 447,510

Amortizable Intangible Assets -

Amortizable Intangible Assets - Schedule of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 10, 2018	Dec. 31, 2019	Dec. 31, 2018
Intangible assets [Line Items]
Gross Carrying Amount		$ 80,675	$ 75,104
Accumulated Amortization		(27,304)	(21,177)
Net		53,371	53,927
Energy Sales Agreement
Intangible assets [Line Items]
Gross Carrying Amount		16,909	17,234
Accumulated Amortization		(4,182)	(1,977)
Net		$ 12,727	15,257
Intangible assets, useful life		11 years
Timber cutting rights
Intangible assets [Line Items]
Gross Carrying Amount		$ 38,767	34,139
Accumulated Amortization		(1,369)
Net		$ 37,398	34,139
Intangible assets, useful life	30 years	30 years
Software and Other Intangible Assets
Intangible assets [Line Items]
Gross Carrying Amount		$ 24,999	23,731
Accumulated Amortization		(21,753)	(19,200)
Net		$ 3,246	$ 4,531
Intangible assets, useful life		5 years

Amortizable Intangible Assets_2

Amortizable Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets	$ 5,930	$ 5,022	$ 4,030

Amortizable Intangible Assets_3

Amortizable Intangible Assets - Schedule of Amortization Expense Related to Intangible Assets (Details) $ in Thousands	Dec. 31, 2019USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2020	$ 4,284
2021	4,007
2022	3,272
2023	2,919
2024	$ 2,907

Other Long-Term Assets - Schedu

Other Long-Term Assets - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Sandalwood tree plantations	$ 21,603	$ 13,258
Other	4,435	4,646
Other long-term assets	$ 26,038	$ 17,904

Accounts Payable and Other - Sc

Accounts Payable and Other - Schedule of Accounts Payable and Other (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables And Accruals [Abstract]
Trade payables	$ 73,721	$ 36,333
Accrued expenses	111,696	95,936
Interest payable	33,198	16,861
Income tax payable	28,080	29,818
Legal cost award payable	0	6,951
Other	8,849	8,585
Accounts payable and other	$ 255,544	$ 194,484

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 1,087,932	$ 1,041,389
Senior Notes 2022
Debt Instrument [Line Items]
Total debt	0	98,918
2024 Senior Notes
Debt Instrument [Line Items]
Total debt	246,911	246,154
2025 Senior Notes
Debt Instrument [Line Items]
Total debt	545,665	342,761
2026 Senior Notes
Debt Instrument [Line Items]
Total debt	295,356	294,588
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Total debt	0	58,968
MPR Credit Facility - C$60 Million
Debt Instrument [Line Items]
Total debt	0
Celgar Credit Facility - C$40.0 Million
Debt Instrument [Line Items]
Total debt	0	0
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Total debt	$ 0	$ 0

Debt - Schedule of Debt (Parent

Debt - Schedule of Debt (Parenthetical) (Details)	Oct. 31, 2019USD ($)	Dec. 20, 2017USD ($)	Feb. 03, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2019CAD ($)	Mar. 16, 2017USD ($)
Debt Instrument [Line Items]
Long-term Debt				$ 1,087,932,000	$ 1,041,389,000
Loss on settlement of debt				4,750,000	21,515,000	$ 10,696,000
Senior Notes 2022
Debt Instrument [Line Items]
Debt, face amount				100,000,000
Debt, redemption value	$ 100,000,000				300,000,000
Loss on settlement of debt	4,750,000				21,515,000
2024 Senior Notes
Debt Instrument [Line Items]
Debt, face amount				$ 250,000,000
Debt, maturity date				Feb. 1, 2024
2024 Senior Notes | Minimum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				30 days
2024 Senior Notes | Maximum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				60 days
2025 Senior Notes
Debt Instrument [Line Items]
Debt, face amount	$ 200,000,000			$ 550,000,000	$ 350,000,000
Debt, maturity date				Jan. 15, 2025	Jan. 15, 2025
Debt, interest rate					7.375%
Debt, issued price percentage of principal amount	102.75%				100.00%
Long-term Debt	$ 202,063,000				$ 342,682,000
Debt instrument, yield to worst percentage	6.435%
2026 Senior Notes
Debt Instrument [Line Items]
Debt, face amount		$ 300,000,000		$ 300,000,000
Debt, maturity date		Jan. 15, 2026		Jan. 15, 2026
Debt, interest rate		5.50%
Debt, issued price percentage of principal amount		100.00%
Long-term Debt		$ 293,795,000
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €							€ 200,000,000
Long-term Debt				$ 0	58,968,000
Debt, description of variable basis spread				Euribor
Debt, amount of debt supporting bank guarantees				$ 12,410,000			11,000,000
Line of credit facility, remaining borrowing capacity				$ 212,270,000			189,000,000
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]
Line of credit, maximum borrowing capacity								$ 60,000,000
Long-term Debt				$ 0
Line of credit facility, remaining borrowing capacity				45,440,000				59,000,000
Line of credit, letters of credit outstanding, amount				$ 754,000				1,000,000
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 | US Dollar Borrowings Rate Option 1a
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 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 | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				LIBOR
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$40.0 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity								40,000,000
Long-term Debt				$ 0	0
Line of credit facility, remaining borrowing capacity				29,488,000				38,300,000
Line of credit, letters of credit outstanding, amount				$ 1,308,000				$ 1,700,000
Required available borrowing capacity				25.00%
Celgar Credit Facility - C$40.0 Million | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				Canadian prime
Celgar Credit Facility - C$40.0 Million | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, description of variable basis spread				bankers acceptance
Debt, variable basis spread				1.50%
Celgar Credit Facility - C$40.0 Million | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				U.S. base
Celgar Credit Facility - C$40.0 Million | U S Dollar Borrowings Rate Option1
Debt Instrument [Line Items]
Debt, description of variable basis spread				LIBOR
Debt, variable basis spread				1.50%
Celgar Credit Facility - C$40.0 Million | Canadian U S Dollar Borrowings Rate Option1
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)				0.25%
Celgar Credit Facility - C$40.0 Million | Canadian & US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)				0.125%
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €							2,600,000
Long-term Debt				$ 0	$ 0
Debt, description of variable basis spread				three-month Euribor
Debt, variable basis spread				2.50%
Debt, amount of debt supporting bank guarantees				$ 2,867,000			€ 2,600,000
Line of credit facility, remaining borrowing capacity				$ 0
Senior Notes 2024
Debt Instrument [Line Items]
Debt, face amount			$ 250,000,000
Debt, maturity date			Feb. 1, 2024
Debt, interest rate			6.50%
Debt, issued price percentage of principal amount			100.00%
Long-term Debt									$ 244,711,000
2019 Senior Notes
Debt Instrument [Line Items]
Loss on settlement of debt			$ 10,696,000
Debt, repurchase amount			$ 227,000,000
Senior Notes 2025 and 2026 | Minimum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				10 days
Senior Notes 2025 and 2026 | Maximum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				60 days

Debt - Principal Maturities of

Debt - Principal Maturities of Debt (Details) $ in Thousands	Dec. 31, 2019USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2020	$ 0
2021	0
2022	0
2023	0
2024	250,000
Thereafter	850,000
Total debt	$ 1,100,000

Debt Redemption Period for Seni

Debt Redemption Period for Senior Notes (Details)	12 Months Ended
	Dec. 31, 2019
2024 Senior Notes | Debt Instrument, Redemption, Period Four
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	103.25%
2024 Senior Notes | Debt Instrument, Redemption, Period Five
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.625%
2024 Senior Notes | Debt Instrument, Redemption, Period Six
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
2025 Senior Notes | Debt Instrument Redemption Period Seven
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	103.688%
2025 Senior Notes | Debt Instrument Redemption Period Eight
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.844%
2025 Senior Notes | Debt Instrument Redemption Period Nine
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
2026 Senior Notes | Debt Instrument Redemption Period Ten
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.75%
2026 Senior Notes | Debt Instrument, Redemption, Period Eleven
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.375%
2026 Senior Notes | Debt Instrument, Redemption, Period Twelve
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, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	$ 110,855
Service cost	3,139
Interest cost	4,064
Benefit payments	(4,350)
Actuarial losses (gains)	6,751
Foreign currency exchange rate changes	5,789
Benefit obligation, ending balance	126,248	$ 110,855
Fair value of plan assets, beginning balance	84,122
Actual returns	11,269
Contributions	4,467
Foreign currency exchange rate changes	4,483
Fair value of plan assets, ending balance	99,991	84,122
Funded status	(26,257)
Expected return on plan assets	(4,017)
Amortization of unrecognized items	263
Net benefit cost	3,449
Celgar and MPR
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	110,855	59,118
Benefit obligation transferred, MPR		62,545
Service cost		736
Interest cost		2,118
Benefit payments		(2,940)
Actuarial losses (gains)		(4,609)
Foreign currency exchange rate changes		(6,113)
Benefit obligation, ending balance		110,855
Fair value of plan assets, beginning balance	84,122	37,057
Fair value plan assets transferred, MPR		52,740
Actual returns		378
Contributions		1,133
Foreign currency exchange rate changes		(4,246)
Fair value of plan assets, ending balance		84,122
Funded status		(26,733)
Expected return on plan assets		(1,694)
Amortization of unrecognized items		708
Net benefit cost		1,868
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	95,996
Service cost	2,868
Interest cost	3,516
Benefit payments	(3,703)
Actuarial losses (gains)	9,228
Foreign currency exchange rate changes	5,091
Benefit obligation, ending balance	112,996	95,996
Fair value of plan assets, beginning balance	84,122
Actual returns	11,269
Contributions	3,820
Foreign currency exchange rate changes	4,483
Fair value of plan assets, ending balance	99,991	84,122
Funded status	(13,005)
Expected return on plan assets	(4,017)
Amortization of unrecognized items	941
Net benefit cost	3,308
Pension Plan | Celgar and MPR
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	95,996	38,330
Benefit obligation transferred, MPR		62,545
Service cost		269
Interest cost		1,409
Benefit payments		(2,346)
Actuarial losses (gains)		456
Foreign currency exchange rate changes		(4,667)
Benefit obligation, ending balance		95,996
Fair value of plan assets, beginning balance	84,122	37,057
Fair value plan assets transferred, MPR		52,740
Actual returns		378
Contributions		539
Foreign currency exchange rate changes		(4,246)
Fair value of plan assets, ending balance		84,122
Funded status		(11,874)
Expected return on plan assets		(1,694)
Amortization of unrecognized items		915
Net benefit cost		899
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	14,859
Service cost	271
Interest cost	548
Benefit payments	(647)
Actuarial losses (gains)	(2,477)
Foreign currency exchange rate changes	698
Benefit obligation, ending balance	13,252	14,859
Contributions	647
Funded status	(13,252)
Amortization of unrecognized items	(678)
Net benefit cost	141
Other Postretirement Benefits Plan | Celgar and MPR
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning balance	$ 14,859	20,788
Service cost		467
Interest cost		709
Benefit payments		(594)
Actuarial losses (gains)		(5,065)
Foreign currency exchange rate changes		(1,446)
Benefit obligation, ending balance		14,859
Contributions		594
Funded status		(14,859)
Amortization of unrecognized items		(207)
Net benefit cost		$ 969

Pension and Other Post-Retire_4

Pension and Other Post-Retirement Benefit Obligations - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 3,715
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,400	$ 1,024	$ 959
Multiemployer Plan, Contributions by Employer	$ 2,203	$ 2,218	$ 1,969
Celgar [Member] | Debt securities [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	80.00%
Celgar [Member] | Equity securities [Member]
Defined Contribution 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, 2019USD ($)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2020	$ 4,355
2021	4,510
2022	4,696
2023	4,844
2024	5,052
2025-2029	28,198
Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2020	516
2021	544
2022	568
2023	593
2024	618
2025-2029	$ 3,450

Pension and Other Post-Retire_6

Pension and Other Post-Retirement Benefit Obligations - Summary of Key Assumptions (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Celgar [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation, Discount rate	3.00%	3.14%	3.50%
Benefit obligations, Rate of compensation increase	2.50%	2.50%	2.50%
Net benefit cost, Discount rate	3.14%	3.50%	3.80%
Net benefit cost, Rate of compensation increase	2.50%	2.50%	2.50%
Net benefit cost, Expected rate of return on plan assets	3.90%	4.40%	6.00%
MPR
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation, Discount rate	3.20%	3.90%
Benefit obligations, Rate of compensation increase	2.75%	2.75%
Net benefit cost, Discount rate	3.90%	3.95%
Net benefit cost, Rate of compensation increase	2.75%	3.25%
Net benefit cost, Expected rate of return on plan assets	5.12%	5.15%

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, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Health care cost trend rate assumed for next year	5.00%	5.50%
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	2021	2021

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, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	$ 99,991	$ 84,122
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	99,991	84,122
Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	43,800	31,230
Equity securities [Member] | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	43,800	31,230
Equity securities [Member] | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Equity securities [Member] | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	55,757	49,724
Debt securities [Member] | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	55,757	49,724
Debt securities [Member] | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Debt securities [Member] | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	69	2,054
Cash | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	69	2,054
Cash | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Cash | Fair Value, Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	365	1,114
Other | Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	365	1,114
Other | Fair Value, Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value measurements	0	0
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 Multiemployer Plan (Details) - The Pulp and Paper Industry Pension Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
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	false

Income Taxes - Summary of Incom

Income Taxes - Summary of Income (Loss) Before Provision for Income Taxes By Taxing Jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income from Continuing Operations before Income Taxes, U.S.	$ (43,408)	$ (69,202)	$ (41,635)
Income from Continuing Operations before Income Taxes, Foreign	52,995	246,472	145,570
Income before income taxes	$ 9,587	$ 177,270	$ 103,935

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. Federal and State current income tax provision	$ 342
Foreign current income tax provision	26,757	$ 32,085	$ 11,396
Total current income tax provision	27,099	32,085	11,396
Foreign deferred income tax provision (benefit)	(7,873)	16,596	22,056
Total income tax provision	$ 19,226	$ 48,681	$ 33,452

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019USD ($)Entity	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Income ax examination, description	The German tax authorities have completed examinations up to and including the 2015 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 2016 and 2015, respectively
Unrecognized Tax Benefits	$ 0	$ 0
Recognized interest and penalties related to unrecognized tax benefit	$ 0	$ 0	$ 0
U.S. Federal statutory rate	21.00%	21.00%	35.00%
Deferred asset reduction from change in tax rate			$ 27,445,000
Cumulative undistributed earnings of foreign subsidiaries			22,398,000
Foreign Earnings Repatriated			$ 3,473,000
Undistributed Earnings of Foreign Subsidiaries	$ 284,745,000
German Tax Authorities | Foreign Country
Income tax examination not started, 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, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
U.S. Federal statutory rate	21.00%	21.00%	35.00%
U.S. Federal statutory rate on income before provision for income taxes	$ (2,013)	$ (37,227)	$ (36,377)
Tax differential on foreign income	(5,368)	(17,511)	10,398
Effect of foreign earnings	(13,747)	(51,639)	(3,584)
Change in undistributed earnings			13,297
Change in tax rate			(26,627)
Valuation allowance	(11,643)	64,573	5,750
Tax benefit of partnership structure	3,841	4,208	4,937
Non-taxable foreign subsidies	3,200	2,908	2,735
True-up of prior year taxes	6,031	(9,877)	(3,685)
Foreign exchange on valuation allowance	356	(878)	1,953
Foreign exchange on settlement of debt		879	1,342
Other	117	(4,117)	(3,591)
Total income tax provision	$ (19,226)	$ (48,681)	$ (33,452)

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
U.S. tax loss carryforwards and credits	$ 4,671	$ 8,982
Basis difference between income tax and financial reporting with respect to operating pulp mills	(132,100)	(138,541)
Long-term debt	(7,388)	(7,232)
Payable and accrued expenses	577	4,582
Deferred pension liability	11,270	9,657
Finance leases	10,072	8,269
Research and development expense pool	3,397	3,150
Other (deferred tax liabilities)	(4,050)	(4,848)
Total gross deferred tax liability	(65,842)	(80,617)
Valuation allowance	(22,759)	(11,116)	$ (75,689)
Net deferred income tax liability	(88,601)	(91,733)
Deferred income tax asset	1,246	1,374
Deferred income tax liability	(89,847)	(93,107)
Federal Ministry of Finance, Germany
Foreign tax loss carryforwards	31,317	35,364
Canada Revenue Agency
Foreign tax loss carryforwards	$ 16,392	$ 0

Income Taxes - Summary of Tax C

Income Taxes - Summary of Tax Carryforwards (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
United States
Income Taxes Disclosures [Line Items]
Interest carryforwards	$ 21,800
Other Tax Carryforward, Expiration Year	Indefinite
Federal Ministry of Finance, Germany
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 69,300
Interest carryforwards	$ 82,000
Tax Loss Carryforwards, Expiration Year	Indefinite
Other Tax Carryforward, Expiration Year	Indefinite
Canada Revenue Agency
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 60,700
Scientific research and experimental development tax credit carryforwards	$ 4,700
Tax Loss Carryforwards, Expiration Year	2036 – 2039
Tax Credits Carryforward, Expiration Year	2030 – 2037
Australian Taxation Office
Income Taxes Disclosures [Line Items]
Net operating loss carryforwards	$ 11,100
Tax Loss Carryforwards, Expiration Year	Indefinite

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Valuation Allowance [Line Items]
Valuation allowance, beginning of period	$ 11,116	$ 75,689
Valuation allowance - the impact of changes in foreign exchange rates	356	(878)
Valuation allowance, end of period	22,759	11,116
United States
Valuation Allowance [Line Items]
Valuation Allowance - increase (decrease) amount	(4,503)	(37,709)
Canada
Valuation Allowance [Line Items]
Valuation Allowance - increase (decrease) amount	16,188	(26,384)
Australia
Valuation Allowance [Line Items]
Valuation Allowance - increase (decrease) amount	$ (398)	$ 398

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Date Declared	Oct. 31, 2019	Aug. 1, 2019	May 2, 2019	Feb. 14, 2019	Oct. 25, 2018	Jul. 26, 2018	May 3, 2018	Feb. 15, 2018
Dividends declared per common share	$ 0.1375	$ 0.1375	$ 0.1375	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.5375	$ 0.5000	$ 0.4700
Dividends, Common Stock, Cash	$ 9,025	$ 9,025	$ 9,025	$ 8,204	$ 8,150	$ 8,150	$ 8,150	$ 8,147	$ 35,279	$ 32,597	$ 30,553

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 13, 2020	May 31, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share			$ 0.1375	$ 0.1375	$ 0.1375	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.1250	$ 0.5375	$ 0.5000	$ 0.4700
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
Payments for repurchase of common stock											$ 754
Common shares available for grant			2,600,000								2,600,000
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											641,206
Shares outstanding			1,764,976				2,036,008				1,764,976	2,036,008
Vesting period											3 years
Expense recognized											$ 2,557	$ 3,422	$ 2,437
Weighted-average grant date fair value of awards granted											$ 15.34	$ 12.75	$ 12
Fair value of vested and issued shares or units											$ 6,754	$ 1,992	$ 3,445
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted											31,405
Shares outstanding			31,405				31,130				31,405	31,130
Vesting period											1 year
Expense recognized											$ 479	$ 518	$ 453
Weighted-average grant date fair value of awards granted											$ 14.33	$ 16.70	$ 11.80
Fair value of vested and issued shares or units											$ 466	$ 703	$ 437
Unrecognized compensation cost			$ 188								188
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											$ 754
Stock repurchased during period, shares											52,879
Average repurchase price per share											$ 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 | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share	$ 0.1375
Dividends Payable, Date to be Paid	Apr. 1, 2020
Dividends Payable, Date of Record	Mar. 25, 2020

Shareholders' Equity - Summar_2

Shareholders' Equity - Summary of Share Activity - PSU's (Details) - Performance Share Units - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	2,036,008
Granted	641,206
Vested and issued (in shares)	(449,395)
Forfeited (in shares)	(462,843)
Outstanding - Ending	1,764,976	2,036,008
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding - Beginning	$ 9.59
Granted	15.34	$ 12.75	$ 12
Vested and issued	6.02
Forfeited	6.20
Outstanding - Ending	$ 13.48	$ 9.59

Shareholders' Equity - Summar_3

Shareholders' Equity - Summary of Share Activity - Restricted Shares (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	31,130
Granted	31,405
Vested	(31,130)
Outstanding - Ending	31,405	31,130
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding - Beginning	$ 16.70
Granted	14.33	$ 16.70	$ 11.80
Vested and issued	16.70
Outstanding - Ending	$ 14.33	$ 16.70

Net Income (Loss) Per Common _3

Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Income Per Common Share Basic And Diluted [Line Items]
Net income (loss) - basic and diluted	$ (9,639)	$ 128,589	$ 70,483
Net income (loss) per common share, basic	$ (0.15)	$ 1.97	$ 1.09
Net income (loss) per common share, diluted	$ (0.15)	$ 1.96	$ 1.08
Basic, Weighted average number of common shares outstanding	65,553,196	65,133,467	64,915,955
Diluted, Weighted average number of common shares outstanding	65,553,196	65,770,840	65,393,105
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)		619,411	458,236
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)		17,962	18,914

Net Income (Loss) Per Common _4

Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Share (Parenthetical) (Details) - shares	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Contingently issuable shares excluded from the basic weighted average shares outstanding	31,405	31,130	43,635

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)	12 Months Ended
	Dec. 31, 2019shares
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per common share	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	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, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders' equity	$ 581,429	$ 550,666	$ 379,128
Other comprehensive income (loss) before reclassifications	11,347	(69,877)
Amounts reclassified from accumulated other comprehensive loss	263	708
Other comprehensive income (loss), net of taxes	11,610	(69,169)	126,268
Total shareholders' equity	550,403	581,429	550,666
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders' equity	(127,000)	(50,101)
Other comprehensive income (loss) before reclassifications	12,291	(76,899)
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss), net of taxes	12,291	(76,899)
Total shareholders' equity	(114,709)	(127,000)	(50,101)
Defined Benefit Pension and Other Post-Retirement Benefit Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders' equity	(1,170)	(8,900)
Other comprehensive income (loss) before reclassifications	(944)	7,022
Amounts reclassified from accumulated other comprehensive loss	263	708
Other comprehensive income (loss), net of taxes	(681)	7,730
Total shareholders' equity	(1,851)	(1,170)	(8,900)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders' equity	(128,170)	(59,001)	(185,269)
Other comprehensive income (loss), net of taxes	11,610	(69,169)	126,268
Total shareholders' equity	$ (116,560)	$ (128,170)	$ (59,001)

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 10, 2018
MPR - CPP
Related Party Transaction [Line Items]
Ownership percentage	50.00%	50.00%		50.00%
Related party transaction, purchases from related party	$ 96,763	$ 6,044	$ 0
Receivable balance from related party	$ 3,462	1,167
MPR - logging JV
Related Party Transaction [Line Items]
Ownership percentage	50.00%
Related party transaction, purchases from related party	$ 16,681	2,232	$ 0
Accounts payable, related parties	$ 1,151	$ 2,343

Business Segment Information -

Business Segment Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)millcustomer	Dec. 31, 2018USD ($)millcustomer	Dec. 31, 2017USD ($)customer	Dec. 10, 2018
Segment Reporting Information [Line Items]
Number of pulp mills | mill	4	4
Revenues	$ 1,624,411	$ 1,457,718	$ 1,169,145
Number of customers accounting for 10% or more of sales | customer	0	1	1
Revenue from Contract with Customer | Customer Concentration Risk
Segment Reporting Information [Line Items]
Revenue major customer percentage		13.00%	13.00%
Revenue from Contract with Customer | 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	$ 531	$ 1,343	$ 1,350
Intersegment Eliminations | Wood Products
Segment Reporting Information [Line Items]
Revenues	$ 15,190	$ 18,537	$ 12,697
MPR - CPP
Segment Reporting Information [Line Items]
Ownership percentage	50.00%	50.00%		50.00%

Business Segment Information _2

Business Segment Information - Schedule of Results by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenues	$ 1,624,411	$ 1,457,718	$ 1,169,145
Operating income (loss)	84,003	267,867	168,554
Depreciation and amortization	126,394	96,729	85,294
Purchase of property, plant and equipment	132,034	87,012	57,915
Total assets	2,065,720	1,975,735	1,724,710
Pulp
Segment Reporting Information [Line Items]
Total revenues	1,370,742	1,190,588	979,645
Lumber
Segment Reporting Information [Line Items]
Total revenues	142,243	168,663	82,176
Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	103,453	88,925	100,942
Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	7,973	9,542	6,382
Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	1,457,123	1,268,204	1,071,715
Operating income (loss)	90,583	274,356	171,279
Depreciation and amortization	117,108	87,628	80,833
Purchase of property, plant and equipment	103,066	66,207	54,534
Total assets	1,782,105	1,698,071	1,253,545
Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	159,937	189,036	97,430
Operating income (loss)	7,349	6,203	5,610
Depreciation and amortization	7,966	8,485	4,060
Purchase of property, plant and equipment	28,425	20,682	3,197
Total assets	83,102	131,754	116,320
Operating Segments | Pulp | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	1,370,742	1,190,588	979,645
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	142,243	168,663	82,176
Operating Segments | Energy and Chemicals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	86,381	77,616	92,070
Operating Segments | Energy and Chemicals | Wood Products
Segment Reporting Information [Line Items]
Total revenues	9,721	10,831	8,872
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	7,973	9,542	6,382
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	7,351	478	0
Operating income (loss)	(13,929)	(12,692)	(8,335)
Depreciation and amortization	1,320	616	401
Purchase of property, plant and equipment	543	123	184
Total assets	200,513	145,910	354,845
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	0	0	0
Corporate, Non-Segment | Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	7,351	478	0
Corporate, Non-Segment | Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	0	0	0
United States
Segment Reporting Information [Line Items]
Total revenues	222,295	108,462	43,632
United States | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	168,197	55,692	23,572
United States | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	54,098	52,770	20,060
United States | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Germany
Segment Reporting Information [Line Items]
Total revenues	473,206	573,474	469,041
Germany | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	419,472	499,620	421,895
Germany | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	53,734	73,854	47,146
Germany | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0
China
Segment Reporting Information [Line Items]
Total revenues	430,508	291,657	292,231
China | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	430,508	291,657	292,231
China | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	0	0	0
China | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0
Other Countries
Segment Reporting Information [Line Items]
Total revenues	498,402	484,125	364,241
Other Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	438,946	421,235	334,017
Other Countries | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	52,105	62,412	30,224
Other Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	$ 7,351	$ 478	$ 0

Business Segment Information _3

Business Segment Information - Schedule of Results by Segment (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Investment in joint ventures	$ 53,122	$ 62,574

Business Segment Information _4

Business Segment Information - Schedule Of Long Lived Assets By Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,074,242	$ 1,029,257
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	646,101	655,260
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	410,468	355,817
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 17,673	$ 18,180

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurement - Estimated Fair Values of Outstanding Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,023,968
Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		58,968
Senior notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,156,673	965,000
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
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
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		1,023,968
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		58,968
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	1,156,673	965,000
Fair Value, Significant unobservable inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		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
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, 2019	Dec. 31, 2018
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value of senior notes, net of note issuance costs	$ 1,087,932	$ 1,041,389
Accounts receivable	208,740	252,692
Cash and cash equivalents	351,085	240,491
Senior notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value of senior notes, net of note issuance costs	$ 1,087,932	$ 982,421

Lease Commitments - Additional

Lease Commitments - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Finance Lease, Weighted Average Remaining Lease Term	10 years	9 years	9 years
Consumer Price Index Basis Point Change	1.00%
Lessee, Finance Lease, Lease Not yet Commenced, Term of Contract	12 years
Unrecorded Unconditional Purchase Obligation	$ 31,200
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	9 years
Office Building
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	5 years
Maximum | Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	12 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	8 years
Minimum | Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	5 years
Minimum | Railroad Transportation Equipment
Lessee, Lease, Description [Line Items]
Lessee, Finance Lease, Term of Contract	9 years
Minimum | Office Building
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	4 years

Lease Commitments - Components

Lease Commitments - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating lease cost	$ 3,322	$ 2,655	$ 2,994
Finance lease, amortization of right-of-use assets	3,768	3,595	3,435
Finance lease, interest on lease liabilities	1,370	1,299	934
Total lease cost	$ 8,460	$ 7,549	$ 7,363

Lease Commitments - Supplementa

Lease Commitments - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating cash flows from operating leases	$ 3,322	$ 2,655	$ 2,994
Operating cash flows from finance leases	1,370	1,299	934
Financing cash flows from finance leases	$ 3,344	$ 3,462	$ 3,262

Lease Commitments - Other Infor

Lease Commitments - Other Information Related To Leases (Details)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	7 years	7 years	8 years
Finance Lease, Weighted Average Remaining Lease Term	10 years	9 years	9 years
Operating Lease, Weighted Average Discount Rate, Percent	7.00%
Finance Lease, Weighted Average Discount Rate, Percent	4.00%	6.00%	4.00%

Lease Commitments - Supplemen_2

Lease Commitments - Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease right-of-use assets	$ 13,004	$ 14,700
Operating Lease, other current liabilities	$ 2,484
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherCurrentLiabilitiesMember
Operating lease liabilities	$ 10,520
Operating lease liabilities, total	13,004	$ 14,700
Property and equipment, gross	49,393		$ 44,756
Less: accumulated depreciation	(16,571)		(15,963)
Finance Lease, property, plant and equipment	$ 32,822		$ 28,793
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet		us-gaap:PropertyPlantAndEquipmentNet
Other current liabilities	$ 3,382		$ 4,911
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherCurrentLiabilitiesMember		us-gaap:OtherCurrentLiabilitiesMember
Finance lease liabilities	$ 31,103		$ 24,669
Total finance lease liabilities	$ 34,485		$ 29,580

Lease Commitments - Schedule of

Lease Commitments - Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Finance Lease Liabilities, Payments, Due [Abstract]
Finance Lease, Liability, Payments, Due Next Twelve Months	$ 4,472
Finance Lease, Liability, Payments, Due Year Two	4,343
Finance Lease, Liability, Payments, Due Year Three	4,169
Finance Lease, Liability, Payments, Due Year Four	4,288
Finance Lease, Liability, Payments, Due Year Five	4,184
Finance Lease, Liability, Payments, Due after Year Five	19,142
Finance Lease, Liability, Payments, Due	40,598
Finance Lease, Liability, Undiscounted Excess Amount	(6,113)
Finance Lease, Liability	34,485		$ 29,580
Operating Lease Liabilities, Payments Due [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	3,218
Lessee, Operating Lease, Liability, Payments, Due Year Two	3,071
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,809
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,087
Lessee, Operating Lease, Liability, Payments, Due Year Five	1,378
Lessee, Operating Lease, Liability, Payments, Due after Year Five	3,410
Lessee, Operating Lease, Liability, Payments, Due	15,973
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(2,969)
Operating lease liabilities, total	$ 13,004	$ 14,700

Lease Commitments - Minimum Lea

Lease Commitments - Minimum Lease Payments Under Non-cancellable Finance and Operating Leases (Details) $ in Thousands	Dec. 31, 2018USD ($)
Finance Leases
2019	$ 6,302
2020	3,601
2021	3,441
2022	3,278
2023	3,410
Thereafter	17,025
Total lease payments	37,057
Less: imputed interest	(7,477)
Total lease liability	29,580
Operating Leases
2019	3,309
2020	2,963
2021	2,717
2022	2,557
2023	2,057
Thereafter	5,360
Total lease payments	$ 18,963

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Thousands	Dec. 31, 2019USD ($)
Take-or-Pay Contracts
Recorded Unconditional Purchase Obligation [Line Items]
Purchase obligation	$ 209,533