10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2021

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______

Commission File No.: 000-51826

MERCER INTERNATIONAL INC.

(Exact name of Registrant as specified in its charter)

Washington	47-0956945
(State or other jurisdiction	(I.R.S. Employer
of incorporation or organization)	Identification No.)

Suite 1120, 700 West Pender Street, Vancouver, British Columbia, Canada, V6C 1G8

(Address of office)

(604) 684-1099

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $1.00 per share	MERC	NASDAQ Global Select Market

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes ☒      No ☐

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒     No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company.  See definitions of "large accelerated filer", "accelerated filer", "non-accelerated filer", "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes  ☐   No  ☒

The Registrant had 66,037,552 shares of common stock outstanding as of July 28, 2021.

PART I. FINANCIAL INFORMATION

ITEM 1.FINANCIAL STATEMENTS

MERCER INTERNATIONAL INC.

INTERIM CONSOLIDATED FINANCIAL STATEMENTS

FOR THE SIX MONTHS ENDED JUNE 30, 2021

(Unaudited)

FORM 10-Q

QUARTERLY REPORT - PAGE 2

MERCER INTERNATIONAL INC.

INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(In thousands of U.S. dollars, except per share data)

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Revenues	$	401,832		$	341,195		$	814,552		$	691,794
Costs and expenses
Cost of sales, excluding depreciation and amortization		297,826			284,333			608,023			560,389
Cost of sales depreciation and amortization		31,935			30,179			62,881			63,090
Selling, general and administrative expenses		20,235			16,368			40,783			33,938
Operating income		51,836			10,315			102,865			34,377
Other income (expenses)
Interest expense		(17,130	)		(20,108	)		(36,149	)		(40,192	)
Loss on early extinguishment of debt		—			—			(30,368	)		—
Other income (expenses)		(2,606	)		2,264			4,383			238
Total other expenses, net		(19,736	)		(17,844	)		(62,134	)		(39,954	)
Income (loss) before income taxes		32,100			(7,529	)		40,731			(5,577	)
Income tax provision		(10,685	)		(882	)		(13,383	)		(6,226	)
Net income (loss)	$	21,415		$	(8,411	)	$	27,348		$	(11,803	)
Net income (loss) per common share
Basic and diluted	$	0.32		$	(0.13	)	$	0.41		$	(0.18	)
Dividends declared per common share	$	0.0650		$	0.0650		$	0.1300		$	0.2025

INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

(In thousands of U.S. dollars)

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Net income (loss)	$	21,415		$	(8,411	)	$	27,348		$	(11,803	)
Other comprehensive income (loss), net of taxes
Foreign currency translation adjustment		18,457			44,202			(17,566	)		(30,792	)
Change in unrecognized losses and prior service costs related to defined benefit pension plans, net of tax expense of $nil and $681, respectively (2020 — $nil)		(58	)		17			322			23
Other comprehensive income (loss), net of taxes		18,399			44,219			(17,244	)		(30,769	)
Total comprehensive income (loss)	$	39,814		$	35,808		$	10,104		$	(42,572	)

See accompanying Notes to the Interim Consolidated Financial Statements.

FORM 10-Q

QUARTERLY REPORT - PAGE 3

MERCER INTERNATIONAL INC.

INTERIM CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

	June 30,			December 31,
	2021			2020
ASSETS
Current assets
Cash and cash equivalents	$	384,534		$	361,098
Accounts receivable, net		225,238			227,055
Inventories		313,354			271,696
Prepaid expenses and other		14,475			15,003
Total current assets		937,601			874,852
Property, plant and equipment, net		1,133,292			1,109,740
Investment in joint ventures		45,844			46,429
Amortizable intangible assets, net		50,982			51,571
Operating lease right-of-use assets		11,829			13,251
Other long-term assets		33,896			31,928
Deferred income tax		1,254			1,355
Total assets	$	2,214,698		$	2,129,126
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities
Accounts payable and other	$	264,459		$	210,994
Pension and other post-retirement benefit obligations		905			802
Total current liabilities		265,364			211,796
Debt		1,157,873			1,145,294
Pension and other post-retirement benefit obligations		31,057			31,810
Finance lease liabilities		57,039			41,329
Operating lease liabilities		8,488			9,933
Other long-term liabilities		12,130			10,909
Deferred income tax		78,613			77,028
Total liabilities		1,610,564			1,528,099
Shareholders’ equity
Common shares $1 par value; 200,000,000 authorized; 66,037,000 issued and outstanding (2020 – 65,868,000)		65,988			65,800
Additional paid-in capital		347,093			345,696
Retained earnings		235,872			217,106
Accumulated other comprehensive loss		(44,819	)		(27,575	)
Total shareholders’ equity		604,134			601,027
Total liabilities and shareholders’ equity	$	2,214,698		$	2,129,126
Commitments and contingencies (Note 13)
Subsequent event (Note 7)

See accompanying Notes to the Interim Consolidated Financial Statements.

FORM 10-Q

QUARTERLY REPORT - PAGE 4

MERCER INTERNATIONAL INC.

INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

(Unaudited)

(In thousands of U.S. dollars)

	Common shares
	Number (thousands of shares)		Amount, at Par Value		Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Loss			Total Shareholders' Equity
Three Months Ended June 30:
Balance as of March 31, 2021		65,988	$	65,920	$	346,186		$	218,750		$	(63,218	)	$	567,638
Shares issued on grants of restricted shares		49		68		(68	)		—			—			—
Stock compensation expense		—		—		975			—			—			975
Net income		—		—		—			21,415			—			21,415
Dividends declared		—		—		—			(4,293	)		—			(4,293	)
Other comprehensive income		—		—		—			—			18,399			18,399
Balance as of June 30, 2021		66,037	$	65,988	$	347,093		$	235,872		$	(44,819	)	$	604,134
Balance as of March 31, 2020		65,800	$	65,769	$	344,753		$	243,794		$	(191,548	)	$	462,768
Shares issued on grants of restricted shares		68		31		(31	)		—			—			—
Stock compensation reversal		—		—		(34	)		—			—			(34	)
Net loss		—		—		—			(8,411	)		—			(8,411	)
Dividends declared		—		—		—			(4,282	)		—			(4,282	)
Other comprehensive income		—		—		—			—			44,219			44,219
Balance as of June 30, 2020		65,868	$	65,800	$	344,688		$	231,101		$	(147,329	)	$	494,260

Six Months Ended June 30:
Balance as of December 31, 2020	65,868		$	65,800		$	345,696		$	217,106		$	(27,575	)	$	601,027
Shares issued on grants of restricted shares	49			68			(68	)		—			—			—
Shares issued on grants of performance share units	120			120			(120	)		—			—			—
Stock compensation expense	—			—			1,585			—			—			1,585
Net income	—			—			—			27,348			—			27,348
Dividends declared	—			—			—			(8,582	)		—			(8,582	)
Other comprehensive loss	—			—			—			—			(17,244	)		(17,244	)
Balance as of June 30, 2021	66,037		$	65,988		$	347,093		$	235,872		$	(44,819	)	$	604,134
Balance as of December 31, 2019	65,629		$	65,598		$	344,994		$	256,371		$	(116,560	)	$	550,403
Shares issued on grants of restricted shares	68			31			(31	)		—			—			—
Shares issued on grants of performance share units	195			195			(195	)		—			—			—
Stock compensation reversal	—			—			(80	)		—			—			(80	)
Net loss	—			—			—			(11,803	)		—			(11,803	)
Dividends declared	—			—			—			(13,329	)		—			(13,329	)
Repurchase of common shares	(24	)		(24	)		—			(138	)		—			(162	)
Other comprehensive loss	—			—			—			—			(30,769	)		(30,769	)
Balance as of June 30, 2020	65,868		$	65,800		$	344,688		$	231,101		$	(147,329	)	$	494,260

See accompanying Notes to the Interim Consolidated Financial Statements.

FORM 10-Q

QUARTERLY REPORT - PAGE 5

MERCER INTERNATIONAL INC.

INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands of U.S. dollars)

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Cash flows from (used in) operating activities
Net income (loss)	$	21,415		$	(8,411	)	$	27,348		$	(11,803	)
Adjustments to reconcile net income (loss) to cash flows from operating activities
Depreciation and amortization		31,955			30,201			62,922			63,147
Deferred income tax provision (recovery)		1,276			(4,744	)		2,480			(6,075	)
Inventory impairment		—			6,530			—			12,264
Loss on early extinguishment of debt		—			—			30,368			—
Defined benefit pension plans and other post-retirement benefit plan expense		856			739			1,775			1,501
Stock compensation expense (reversal)		975			(34	)		1,585			(80	)
Foreign exchange transaction losses (gains)		1,966			6,880			(6,640	)		736
Other		356			(695	)		(260	)		(1,192	)
Defined benefit pension plans and other post-retirement benefit plan contributions		(1,202	)		(797	)		(2,125	)		(1,712	)
Changes in working capital
Accounts receivable		16,364			14,938			3,941			(5,988	)
Inventories		(21,964	)		11,442			(42,763	)		(6,678	)
Accounts payable and accrued expenses		30,167			7,879			34,603			(49,781	)
Other		(1,012	)		177			(1,794	)		(76	)
Net cash from (used in) operating activities		81,152			64,105			111,440			(5,737	)
Cash flows from (used in) investing activities
Purchase of property, plant and equipment		(62,124	)		(21,544	)		(87,386	)		(44,562	)
Insurance proceeds		20,048			—			20,048			—
Purchase of amortizable intangible assets		(568	)		(89	)		(1,209	)		(527	)
Other		285			796			(109	)		847
Net cash from (used in) investing activities		(42,359	)		(20,837	)		(68,656	)		(44,242	)
Cash flows from (used in) financing activities
Redemption of senior notes		—			—			(824,557	)		—
Proceeds from issuance of senior notes		—			—			875,000			—
Proceeds from (repayment of) revolving credit facilities, net		(42,042	)		(25,651	)		(57,112	)		25,609
Dividend payments		(4,289	)		—			(4,289	)		(9,047	)
Payment of debt issuance costs		—			—			(14,414	)		—
Proceeds from government grants		—			299			8,532			299
Repurchase of common shares		—			—			—			(162	)
Other		(1,832	)		(1,996	)		89			(11,797	)
Net cash from (used in) financing activities		(48,163	)		(27,348	)		(16,751	)		4,902
Effect of exchange rate changes on cash and cash equivalents		(1,179	)		888			(2,597	)		(2,674	)
Net increase (decrease) in cash and cash equivalents		(10,549	)		16,808			23,436			(47,751	)
Cash and cash equivalents, beginning of period		395,083			286,526			361,098			351,085
Cash and cash equivalents, end of period	$	384,534		$	303,334		$	384,534		$	303,334

Supplemental cash flow disclosure:
Cash paid for interest	$	1,084	$	950	$	40,110	$	38,228
Cash paid for income taxes	$	3,290	$	1,907	$	5,135	$	14,881
Supplemental schedule of non-cash investing and financing activities:
Leased production equipment	$	7,210	$	1,702	$	23,179	$	10,696

See accompanying Notes to the Interim Consolidated Financial Statements.

FORM 10-Q

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MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 1. The Company and Summary of Significant Accounting Policies

Nature of Operations and Basis of Presentation

The Interim Consolidated Financial Statements contained herein include the accounts of Mercer International Inc. ("Mercer Inc.") and all of its subsidiaries (collectively the "Company"). Mercer Inc. owns 100% of its subsidiaries with the exception of the 50% joint venture interest in the Cariboo mill with West Fraser Mills Ltd., which is accounted for using the equity method. The Company's shares of common stock are quoted and listed for trading on the NASDAQ Global Select Market.

The Interim Consolidated Financial Statements have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). The year-end Consolidated Balance Sheet data was derived from audited financial statements. The footnote disclosure included herein has been prepared in accordance with accounting principles generally accepted for interim financial statements in the United States ("GAAP"). The unaudited Interim Consolidated Financial Statements should be read together with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020. In the opinion of the Company, the unaudited Interim Consolidated Financial Statements contained herein have been prepared on a consistent basis with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020 and contain all adjustments necessary for a fair statement of the results of the interim periods included. The results for the periods included herein may not be indicative of the results for the entire year.

In these Interim Consolidated Financial Statements, unless otherwise indicated, all amounts are expressed in United States dollars ("U.S. dollars" or "$"). The symbol "€" refers to euros and the symbol "C$" refers to Canadian dollars.

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.

Impact of the COVID-19 Pandemic

The Company is subject to risks and uncertainties as a result of the COVID-19 pandemic. Recently many countries eased restrictions on economic and social activities to, among other things, reopen their economies by allowing businesses to restart and encourage economic recovery. The impact of the eased restrictions on the COVID-19 virus infection rate and the possible re-imposition of some restrictions on social, business and other activities is uncertain at this time.

The severity of the impact of the COVID-19 pandemic on the Company's business will depend on a number of factors, including, but not limited to, the duration and severity of the pandemic and the extent and severity of the impact on the Company's customers, all of which are uncertain and cannot be predicted. The Company's future results of operations and liquidity could be adversely impacted by delays in payments of outstanding receivable amounts beyond normal payment terms, supply chain disruptions and uncertain demand, and the impact of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by its customers.

FORM 10-Q

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MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 1. The Company and Summary of Significant Accounting Policies (continued)

As of the date of issuance of these Interim Consolidated Financial Statements, the Company has not had significant credit losses, downtime or closures at its mills or disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic, but the extent to which the COVID-19 pandemic may materially impact the Company's future financial condition, liquidity, or results of operations remains uncertain.

Note 2. Inventories

Inventories as of June 30, 2021 and December 31, 2020, were comprised of the following:

	June 30,		December 31,
	2021		2020
Raw materials	$	107,150	$	74,526
Finished goods		98,413		88,256
Spare parts and other		107,791		108,914
	$	313,354	$	271,696

Note 3. Accounts Payable and Other

Accounts payable and other as of June 30, 2021 and December 31, 2020, was comprised of the following:

	June 30,		December 31,
	2021		2020
Trade payables	$	67,679	$	42,730
Accrued expenses		109,142		90,875
Interest payable		27,289		33,241
Income tax payable		21,319		23,256
Government grants (a)		9,105		7,161
Insurance proceeds (a)		6,941		3,369
Other		22,984		10,362
	$	264,459	$	210,994

(a) The Canadian mills have a liability for unspent government grants which will be used to partially finance innovation and greenhouse gas emission reduction capital projects. The Peace River mill has a liability for unspent insurance proceeds which will be used to finance the rebuild of the recovery boiler. The grants and insurance proceeds are recorded in “Cash and cash equivalents” in the Interim Consolidated Balance Sheets, however, they are considered to be restricted as they are repayable if the mills do not spend the funds on approved projects.

FORM 10-Q

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MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 4. Debt

Debt as of June 30, 2021 and December 31, 2020, was comprised of the following:

		June 30,			December 31,
	Maturity	2021			2020
Senior notes (a)
5.500% senior notes	2026	$	300,000		$	300,000
5.125% senior notes	2029		875,000			—
6.500% senior notes	2024		—			250,000
7.375% senior notes	2025		—			550,000
Credit arrangements
€200 million joint revolving credit facility (b)	2023		—			—
C$60 million revolving credit facility (c)	2024		—			21,992
C$60 million revolving credit facility (d)	2023		—			32,988
€2.6 million demand loan (e)			—			—
			1,175,000			1,154,980
Less: unamortized premium and issuance costs, net			(17,127	)		(9,686	)
		$	1,157,873		$	1,145,294

The maturities of the principal portion of debt as of June 30, 2021 were as follows:

2021	$	—
2022		—
2023		—
2024		—
2025		—
Thereafter		1,175,000
	$	1,175,000

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 June 30, 2021, the Company was in compliance with the terms of its debt agreements.

(a) In January 2021, the Company issued $875,000 in aggregate principal amount of 5.125% senior notes which mature on February 1, 2029 (the “2029 Senior Notes”). The net proceeds from the 2029 Senior Notes issuance were $860,586 after deducting the underwriter’s discount and offering expenses. The net proceeds were used to redeem the outstanding senior notes which were to mature in 2024 and 2025 and for general corporate purposes. In connection with the redemption, the Company recorded a loss on early extinguishment of debt of $30,368 in the Interim Consolidated Statements of Operations.

The 2029 Senior Notes and the senior notes which mature on January 15, 2026 (the “2026 Senior Notes” and collectively with the 2029 Senior Notes, the “Senior Notes”) are general unsecured senior obligations of the Company. The Company may redeem all or a part of the Senior Notes, upon not less than 10 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date.

FORM 10-Q

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MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 4. Debt (continued)

The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes:

2026 Senior Notes		2029 Senior Notes
12 Month Period Beginning	Percentage	12 Month Period Beginning	Percentage
January 15, 2021	102.750%	February 1, 2024	102.563%
January 15, 2022	101.375%	February 1, 2025	101.281%
January 15, 2023 and thereafter	100.000%	February 1, 2026 and thereafter	100.000%

(b) A €200.0 million joint revolving credit facility with all of the Company's German mills that matures in December 2023. Borrowings under the facility are unsecured and bear interest at Euribor plus a variable margin ranging from 1.05% to 2.00% dependent on conditions including but not limited to a prescribed leverage ratio. As of June 30, 2021, approximately €9.9 million ($11,720) of this facility was supporting bank guarantees and approximately €190.1 million ($225,960) was available.

(c) A C$60.0 million revolving credit facility for Peace River that matures in February 2024. The facility is available by way of: (i) Canadian dollar denominated advances, which bear interest at a designated prime rate per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.50% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, a designated LIBOR rate plus 1.00% and the bank's applicable reference rate for U.S. dollar loans; and (iv) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.50% per annum. Borrowings under the facility are collateralized by, among other things, the mill's inventories and accounts receivable. As of June 30, 2021, approximately C$0.9 million ($738) was supporting letters of credit and approximately C$45.1 million ($36,391) was available.

(d) A C$60.0 million revolving credit facility for Celgar that matures in July 2023. Borrowings under the facility are collateralized by the mill's inventories, accounts receivable, general intangibles and capital assets and are restricted by a borrowing base calculated on the mill's inventories and accounts receivable. The facility is available by way of: (i) Canadian and U.S. dollar denominated advances, which bear interest at a designated prime rate less 0.125% to plus 0.125% per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.625% per annum; and (iii) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.625% per annum. As of June 30, 2021, approximately C$0.5 million ($364) was supporting letters of credit and approximately C$59.5 million ($48,046) was available.

(e) A €2.6 million demand loan for Rosenthal that does not have a maturity date. Borrowings under this facility are unsecured and bear interest at the rate of the three-month Euribor plus 2.50%. As of June 30, 2021, approximately €2.6 million ($3,033) of this facility was supporting bank guarantees and approximately $nil was available.

FORM 10-Q

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MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 5. 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. The components of the net benefit costs for the Celgar and Peace River defined benefit plans, in aggregate for the three and six month periods ended June 30, 2021 and 2020 were as follows:

	Three Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	956		$	73		$	824		$	63
Interest cost		854			94			814			93
Expected return on plan assets		(1,095	)		—			(1,072	)		—
Amortization of unrecognized items		165			(191	)		233			(216	)
Net benefit costs	$	880		$	(24	)	$	799		$	(60	)

	Six Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	1,981		$	152		$	1,673		$	127
Interest cost		1,771			196			1,654			189
Expected return on plan assets		(2,269	)		—			(2,165	)		—
Amortization of unrecognized items		341			(397	)		461			(438	)
Net benefit costs	$	1,824		$	(49	)	$	1,623		$	(122	)

The components of the net benefit costs other than service cost are recorded in "Other income (expenses)" in the Interim Consolidated Statements of Operations. The amortization of unrecognized items relates to net actuarial losses and prior service costs.

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 three and six month periods ended June 30, 2021, the Company made contributions of $315 and $695, respectively to this plan (2020 – $58 and $471).

Multiemployer Plan

The Company participates in a multiemployer plan for the hourly-paid employees at the Celgar mill. The contributions to the plan are determined based on a percentage of pensionable earnings pursuant to a collective bargaining agreement. The Company has no current or future contribution obligations in excess of the contractual contributions. During the three and six month periods ended June 30, 2021, the Company made contributions of $610 and $1,324, respectively to this plan (2020 – $555 and $1,006).

FORM 10-Q

QUARTERLY REPORT - PAGE 11

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 6. Income Taxes

Differences between the U.S. Federal statutory and the Company's effective tax rates for the three and six month periods ended June 30, 2021 and 2020, were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
U.S. Federal statutory rate	21%			21%			21%			21%
U.S. Federal statutory rate on income (loss) before income taxes	$	(6,741	)	$	1,581		$	(8,554	)	$	1,171
Tax differential on foreign income		(6,532	)		(662	)		(9,380	)		(1,881	)
Effect of foreign earnings (a)		(3,508	)		(1,295	)		(6,620	)		(2,870	)
Valuation allowance (b)		165			(3,169	)		(10,952	)		(3,165	)
Tax benefit of partnership structure		673			935			1,566			1,870
Non-taxable foreign subsidies		743			678			1,491			1,364
True-up of prior year taxes		(46	)		1,068			3,124			(154	)
Annual effective tax rate adjustment		4,700			—			18,000			—
Other, net		(139	)		(18	)		(2,058	)		(2,561	)
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)
Comprised of:
Current income tax provision	$	(9,409	)	$	(5,626	)	$	(10,903	)	$	(12,301	)
Deferred income tax recovery (provision)		(1,276	)		4,744			(2,480	)		6,075
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)

(a) Primarily due to the impact of the global intangible low-taxed income provision in the Tax Cuts and Jobs Act of 2017.

(b) For the three and six month periods ended June 30, 2021, the valuation allowance primarily relates to taxable losses and denied interest expense.

Note 7. Shareholders' Equity

Dividends

During the six month period ended June 30, 2021, the Company's board of directors declared the following quarterly dividends:

Date Declared	Dividend Per Common Share		Amount
February 16, 2021	$	0.0650	$	4,289
April 29, 2021		0.0650		4,293
	$	0.1300	$	8,582

In July 2021, the Company's board of directors declared a quarterly dividend of $0.065 per common share. Payment of the dividend will be made on October 6, 2021 to all shareholders of record on September 29, 2021. Future dividends are subject to approval by the board of directors and may be adjusted as business and industry conditions warrant.

FORM 10-Q

QUARTERLY REPORT - PAGE 12

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 7. Shareholders' Equity (continued)

Stock Based Compensation

The Company has a stock incentive plan which provides for options, restricted stock rights, restricted shares, performance shares, performance share units ("PSUs") and stock appreciation rights to be awarded to employees, consultants and non-employee directors. During the three and six month periods ended June 30, 2021, there were no issued and outstanding options, restricted stock rights, performance shares or stock appreciation rights. As of June 30, 2021, after factoring in all allocated shares, there remain approximately 1.2 million common shares available for grant.

PSUs

PSUs comprise rights to receive common shares at a future date that are contingent on the Company and the grantee achieving certain performance objectives. The performance objective period is generally three years. For the three and six month periods ended June 30, 2021, the Company recognized an expense of $822 and $1,295, respectively related to PSUs (2020 – a reversal of $154 and $313).

The following table summarizes PSU activity during the period:

	Number of PSUs
Outstanding as of January 1, 2021		2,364,848
Granted		1,007,912
Vested and issued		(120,271	)
Forfeited		(498,017	)
Outstanding as of June 30, 2021		2,754,472

Restricted Shares

Restricted shares generally vest at the end of one year. For the three and six month periods ended June 30, 2021, the Company recognized an expense of $153 and $290, respectively related to restricted shares (2020 - $120 and $233). As of June 30, 2021, the total remaining unrecognized compensation cost related to restricted shares amounted to approximately $669 which will be amortized over the remaining vesting periods.

The following table summarizes restricted share activity during the period:

	Number of Restricted Shares
Outstanding as of January 1, 2021		68,140
Granted		49,195
Vested		(68,140	)
Outstanding as of June 30, 2021		49,195

FORM 10-Q

QUARTERLY REPORT - PAGE 13

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 8. Net Income (Loss) Per Common Share

The reconciliation of basic and diluted net income (loss) per common share for the three and six month periods ended June 30, 2021 and 2020 was as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2021		2020			2021		2020
Net income (loss)
Basic and diluted	$	21,415	$	(8,411	)	$	27,348	$	(11,803	)
Net income (loss) per common share
Basic and diluted	$	0.32	$	(0.13	)	$	0.41	$	(0.18	)
Weighted average number of common shares outstanding:
Basic (a)		65,941,932		65,778,894			65,899,904		65,736,677
Effect of dilutive instruments:
PSUs		352,170		—			318,770		—
Restricted shares		38,581		—			47,342		—
Diluted		66,332,683		65,778,894			66,266,016		65,736,677

(a) For the three and six month periods ended June 30, 2021, the basic weighted average number of common shares outstanding excludes 49,195 restricted shares which have been issued, but have not vested as of June 30, 2021 (2020 – 68,140 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 three and six month periods ended June 30, 2021 and 2020 were as follows:  

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
PSUs		—		2,391,082		—		2,391,082
Restricted shares		—		68,140		—		68,140

Note 9. Accumulated Other Comprehensive Loss

The change in the accumulated other comprehensive loss by component (net of tax) for the six month period ended June 30, 2021 was as follows:

	Foreign Currency Translation Adjustment			Defined Benefit Pension and Other Post- Retirement Benefit Items			Total
Balance as of January 1, 2021	$	(19,578	)	$	(7,997	)	$	(27,575	)
Other comprehensive income (loss) before reclassifications		(17,566	)		378			(17,188	)
Amounts reclassified		—			(56	)		(56	)
Other comprehensive income (loss), net of taxes		(17,566	)		322			(17,244	)
Balance as of June 30, 2021	$	(37,144	)	$	(7,675	)	$	(44,819	)

FORM 10-Q

QUARTERLY REPORT - PAGE 14

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 10. Related Party Transactions

The Company enters into related party transactions with its joint ventures. For the three and six month periods ended June 30, 2021, pulp purchases from the Company's 50% owned Cariboo mill, which are transacted at the Cariboo mill's cost, were $27,152 and $48,195, respectively (2020 – $13,942 and $33,536) and as of June 30, 2021 the Company had a receivable balance from the Cariboo mill of $2,791 (December 31, 2020 – $3,518). For the three and six month periods ended June 30, 2021, services from the Company's 50% owned logging and chipping operation, which are transacted at arm's length negotiated prices, were $610 and $5,234, respectively (2020 – $1,735 and $8,278) and as of June 30, 2021 the Company had a payable balance to the operation of $2,172 (December 31, 2020 – $1,953).  

Note 11. 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 Cariboo mill are aggregated into the pulp segment, and the Friesau sawmill is a separate reportable 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 reportable segment.

None of the income or loss items following operating income in the Company's Interim Consolidated Statements of Operations are allocated to the segments, as those items are reviewed separately by management.

Information about certain segment data for the three and six month periods ended June 30, 2021 and 2020, was as follows:

Three Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	310,249	$	90,439	$	1,144		$	401,832
Operating income (loss)	$	13,338	$	42,314	$	(3,816	)	$	51,836
Depreciation and amortization	$	27,967	$	3,748	$	240		$	31,955
Revenues by major products
Pulp	$	297,191	$	—	$	—		$	297,191
Lumber		—		86,285		—			86,285
Energy and chemicals		13,058		2,692		1,144			16,894
Wood residuals		—		1,462		—			1,462
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832
Revenues by geographical markets (a)
U.S.	$	34,406	$	53,610	$	547		$	88,563
Germany		101,095		17,422		—			118,517
China		68,008		469		—			68,477
Other countries		106,740		18,938		597			126,275
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832

(a) Sales are attributed to countries based on the ship-to location provided by the customer.

FORM 10-Q

QUARTERLY REPORT - PAGE 15

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 11. Business Segment Information (continued)

Three Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	298,046	$	41,727	$	1,422		$	341,195
Operating income (loss)	$	8,110	$	4,327	$	(2,122	)	$	10,315
Depreciation and amortization	$	27,219	$	2,804	$	178		$	30,201
Revenues by major products
Pulp	$	276,919	$	—	$	—		$	276,919
Lumber		—		37,611		—			37,611
Energy and chemicals		21,127		2,629		1,422			25,178
Wood residuals		—		1,487		—			1,487
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195
Revenues by geographical markets (a)
U.S.	$	39,651	$	17,622	$	575		$	57,848
Germany		77,568		12,294		—			89,862
China		78,814		—		—			78,814
Other countries		102,013		11,811		847			114,671
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195

(a) Sales are attributed to countries based on the ship-to location provided by the customer.    

Six Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	650,005	$	161,426	$	3,121		$	814,552
Operating income (loss)	$	38,634	$	70,291	$	(6,060	)	$	102,865
Depreciation and amortization	$	55,013	$	7,471	$	438		$	62,922
Total assets (a)	$	1,778,079	$	249,205	$	187,414		$	2,214,698
Revenues by major products
Pulp	$	614,773	$	—	$	—		$	614,773
Lumber		—		153,596		—			153,596
Energy and chemicals		35,232		4,806		3,121			43,159
Wood residuals		—		3,024		—			3,024
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552
Revenues by geographical markets (b)
U.S.	$	80,278	$	98,702	$	1,306		$	180,286
Germany		193,632		29,539		—			223,171
China		163,543		846		—			164,389
Other countries		212,552		32,339		1,815			246,706
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552

(a) Total assets for the pulp segment includes the Company's $45,844 investment in joint ventures, primarily for the Cariboo mill.

(b) Sales are attributed to countries based on the ship-to location provided by the customer.      

FORM 10-Q

QUARTERLY REPORT - PAGE 16

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 11. Business Segment Information (continued)

Six Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	601,651	$	87,505	$	2,638		$	691,794
Operating income (loss)	$	29,549	$	9,882	$	(5,054	)	$	34,377
Depreciation and amortization	$	57,590	$	5,181	$	376		$	63,147
Revenues by major products
Pulp	$	555,867	$	—	$	—		$	555,867
Lumber		—		78,597		—			78,597
Energy and chemicals		45,784		5,260		2,638			53,682
Wood residuals		—		3,648		—			3,648
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794
Revenues by geographical markets (a)
U.S.	$	73,518	$	35,244	$	1,161		$	109,923
Germany		167,240		27,197		—			194,437
China		164,362		—		—			164,362
Other countries		196,531		25,064		1,477			223,072
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794

(a) Sales are attributed to countries based on the ship-to location provided by the customer.      

As of December 31, 2020, the Company had total assets of $1,740,233 in the pulp segment, $112,267 in the wood products segment and $276,626 in corporate and other. Total assets for the pulp segment includes the Company's $46,429 investment in joint ventures, primarily for the Cariboo mill.

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 three and six month periods ended June 30, 2021, the pulp segment sold $52 and $151, respectively of residual fuel to the wood products segment (2020 – $164 and $346) and the wood products segment sold $2,901 and $5,833, respectively of residual fiber to the pulp segment (2020 – $3,594 and $7,430).

FORM 10-Q

QUARTERLY REPORT - PAGE 17

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 12. 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 June 30, 2021 and December 31, 2020 were as follows:

	Fair value measurements as of June 30, 2021 using:
Description	Level 1		Level 2		Level 3		Total
Senior notes	$	—	$	1,208,622	$	—	$	1,208,622

	Fair value measurements as of December 31, 2020 using:
Description	Level 1		Level 2		Level 3		Total
Revolving credit facilities	$	—	$	54,980	$	—	$	54,980
Senior notes		—		1,131,229		—		1,131,229
	$	—	$	1,186,209	$	—	$	1,186,209

The carrying value of the revolving credit facilities classified as Level 2 approximates the fair value as the variable interest rates reflect current interest rates for financial instruments with similar characteristics and maturities.

The fair value of the senior notes classified as Level 2 was determined using quoted prices in a dealer market, or using recent market transactions. The Company's senior notes are not carried at fair value in the Interim Consolidated Balance Sheets as of June 30, 2021 or December 31, 2020. However, fair value disclosure is required. The carrying value of the Company's senior notes, net of note issuance costs and premium is $1,157,873 as of June 30, 2021 (December 31, 2020 – $1,090,314).

Credit Risk

The Company's credit risk is primarily attributable to cash held in bank accounts and accounts receivable. The Company maintains cash balances in foreign financial institutions in excess of insured limits. The Company limits its credit exposure on cash held in bank accounts by periodically investing cash in excess of short-term operating requirements and debt obligations in low risk government bonds, or similar debt instruments. The Company's credit risk associated with the sale of pulp, lumber and other wood residuals is managed through setting credit limits, the purchase of credit insurance and for certain customers a letter of credit is received prior to shipping the product. The Company reviews new customers' credit history before granting credit and conducts regular reviews of existing customers' credit performance. Concentrations of credit risk on the sale of pulp, lumber and other wood residuals are with customers and agents based primarily in Germany, China and the U.S.

The Company's exposure to credit losses may increase if its customers are adversely affected by the COVID-19 pandemic. Although the Company has historically not experienced significant credit losses, it is possible that there could be a material adverse impact from potential adjustments of the carrying amount of trade receivables if the cash flows of the Company's customers are adversely impacted by the COVID-19 pandemic. As of June 30, 2021, the Company has not had significant credit losses due to the COVID-19 pandemic.

The carrying amount of cash and cash equivalents of $384,534 and accounts receivable of $225,238 recorded in the Interim Consolidated Balance Sheet, net of any allowances for losses, represents the Company's maximum exposure to credit risk.

FORM 10-Q

QUARTERLY REPORT - PAGE 18

MERCER INTERNATIONAL INC.

NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(In thousands of U.S. dollars, except share and per share data)

Note 13. Commitments and Contingencies

(a) 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.

(b) 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.

FORM 10-Q

QUARTERLY REPORT - PAGE 19

NON-GAAP FINANCIAL MEASURES

This quarterly report on Form 10-Q contains "non-GAAP financial measures", that is, financial measures that either exclude or include amounts that are not excluded or included in the most directly comparable measure calculated and presented in accordance with the generally accepted accounting principles in the United States, referred to as "GAAP". Specifically, we make use of the non-GAAP measure "Operating EBITDA".

Operating EBITDA is defined as operating income plus depreciation and amortization and non-recurring capital asset impairment charges. We use Operating EBITDA as a benchmark measurement of our own operating results and as a benchmark relative to our competitors. We consider it to be a meaningful supplement to operating income as a performance measure primarily because depreciation expense and non-recurring capital asset impairment charges are not actual cash costs, and depreciation expense varies widely from company to company in a manner that we consider largely independent of the underlying cost efficiency of our operating facilities. In addition, we believe Operating EBITDA is commonly used by securities analysts, investors and other interested parties to evaluate our financial performance.

Operating EBITDA does not reflect the impact of a number of items that affect our net income (loss), including financing costs and the effect of derivative instruments. Operating EBITDA is not a measure of financial performance under GAAP, and should not be considered as an alternative to net income (loss) or operating income as a measure of performance, or as an alternative to net cash from (used in) operating activities as a measure of liquidity. Operating EBITDA is an internal measure and therefore may not be comparable to other companies.

Operating EBITDA has significant limitations as an analytical tool, and should not be considered in isolation, or as a substitute for analysis of our results as reported under GAAP. Some of these limitations are that Operating EBITDA does not reflect: (i) our cash expenditures, or future requirements, for capital expenditures or contractual commitments; (ii) changes in, or cash requirements for, working capital needs; (iii) the significant interest expense, or the cash requirements necessary to service interest or principal payments, on our outstanding debt; (iv) the impact of realized or marked to market changes in our derivative positions, which can be substantial; and (v) the impact of non-recurring impairment charges against our investments or assets. Because of these limitations, Operating EBITDA should only be considered as a supplemental performance measure and should not be considered as a measure of liquidity or cash available to us to invest in the growth of our business. Because all companies do not calculate Operating EBITDA in the same manner, Operating EBITDA as calculated by us may differ from Operating EBITDA or EBITDA as calculated by other companies. We compensate for these limitations by using Operating EBITDA as a supplemental measure of our performance and by relying primarily on our GAAP financial statements.

FORM 10-Q

QUARTERLY REPORT - PAGE 20

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

In this document: (i) unless the context otherwise requires, references to "we", "our", "us", the "Company" or "Mercer" mean Mercer International Inc. and its subsidiaries; (ii) references to "Mercer Inc." mean the Company excluding its subsidiaries; (iii) information is provided as of June 30, 2021, unless otherwise stated; (iv) our reporting currency is dollars and references to "€" mean euros and "C$" mean Canadian dollars; (v) "ADMTs" refers to air-dried metric tonnes; (vi) "NBSK" refers to northern bleached softwood kraft; (vii) "NBHK" refers to northern bleached hardwood kraft; (viii) "MW" refers to megawatts and "MWh" refers to megawatt hours; (ix) "Mfbm" refers to thousand board feet of lumber and "MMfbm" mean million board feet of lumber; and (x) our lumber metrics are converted from cubic meters to Mfbm using a conversion ratio of 1.6 cubic meters to one Mfbm, which is the ratio commonly used in the industry.

Due to rounding, numbers presented throughout this report may not add up precisely to totals we provide and percentages may not precisely reflect the absolute figure.

The following discussion and analysis of our results of operations and financial condition for the three and six months ended June 30, 2021 should be read in conjunction with our Interim Consolidated Financial Statements and related notes included in this quarterly report, as well as our most recent annual report on Form 10-K for the fiscal year ended December 31, 2020 filed with the Securities and Exchange Commission, referred to as the "SEC".

Results of Operations

General

We have two reportable operating segments:

• Pulp – consists of the manufacture, sale and distribution of pulp, electricity and other by-products at our pulp mills.

• Wood Products – consists of the manufacture, sale and distribution of lumber, electricity and other wood residuals at the Friesau sawmill.

Each segment offers primarily different products and requires different manufacturing processes, technology and sales and marketing.

Current Market Environment

Looking ahead to the third quarter, we expect strong pulp market fundamentals to support marginally higher NBSK pulp prices in Europe but we expect a modest price decline in China. As well, we expect lumber demand and pricing to remain steady in all markets. Although there was a recent significant price correction in the U.S. lumber market, prices remain at historically attractive levels. Further, we believe U.S. lumber prices are near a floor level and expect them to slowly increase once home construction ramps up in the early fall.

Currently NBSK list prices in Europe and North America are approximately $1,340 per ADMT and $1,615 per ADMT, respectively and NBSK net prices in China are approximately $850 per ADMT. Prices for China are net of discounts, allowances and rebates.

COVID-19 Pandemic

The significant ramp up in the administration of vaccines has led to a decline in infection rates in many countries and the lifting of certain restrictive measures by them to reopen their economies, including in countries where we have operations. However, currently there remains ongoing uncertainty about the impact of COVID-19 variations on infection levels. The re-emergence of significant increases in infection rates could result in countries re-imposing restrictive measures that could reduce or impair economic activity. Further, the rollout of vaccines among countries has varied and been uneven.

FORM 10-Q

QUARTERLY REPORT - PAGE 21

We are continuing with important health and safety measures at our operations to protect our employees and to allow our mills to operate responsibly and efficiently including with respect to social distancing, sanitation and personal protection equipment. Further, we are constantly monitoring our operations and guidance from governmental and health organizations to ensure we take appropriate and necessary actions to protect our people.  To date we have not had any downtime at our mills or material disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic.

Summary Financial Highlights

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021				2020
	(in thousands, other than per share amounts)
Statement of Operations Data
Pulp segment revenues	$	310,249		$	298,046		$	650,005			$	601,651
Wood products segment revenues		90,439			41,727			161,426				87,505
Corporate and other revenues		1,144			1,422			3,121				2,638
Total revenues	$	401,832		$	341,195		$	814,552			$	691,794
Pulp segment operating income	$	13,338		$	8,110		$	38,634			$	29,549
Wood products segment operating income		42,314			4,327			70,291				9,882
Corporate and other operating loss		(3,816	)		(2,122	)		(6,060	)			(5,054	)
Total operating income	$	51,836		$	10,315		$	102,865			$	34,377
Pulp segment depreciation and amortization	$	27,967		$	27,219		$	55,013			$	57,590
Wood products segment depreciation and amortization		3,748			2,804			7,471				5,181
Corporate and other depreciation and amortization		240			178			438				376
Total depreciation and amortization	$	31,955		$	30,201		$	62,922			$	63,147
Operating EBITDA(1)	$	83,791		$	40,516		$	165,787			$	97,524
Loss on early extinguishment of debt	$	—		$	—		$	(30,368	)	(2)	$	—
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)		$	(6,226	)
Net income (loss)	$	21,415		$	(8,411	)	$	27,348			$	(11,803	)
Net income (loss) per common share
Basic and diluted	$	0.32		$	(0.13	)	$	0.41			$	(0.18	)
Common shares outstanding at period end		66,037			65,868			66,037				65,868

(1) The following table provides a reconciliation of net income (loss) to operating income and Operating EBITDA for the periods indicated:

	Three Months Ended June 30,					Six Months Ended June 30,
	2021		2020			2021			2020
	(in thousands)
Net income (loss)	$	21,415	$	(8,411	)	$	27,348		$	(11,803	)
Income tax provision		10,685		882			13,383			6,226
Interest expense		17,130		20,108			36,149			40,192
Loss on early extinguishment of debt		—		—			30,368			—
Other expenses (income)		2,606		(2,264	)		(4,383	)		(238	)
Operating income		51,836		10,315			102,865			34,377
Add: Depreciation and amortization		31,955		30,201			62,922			63,147
Operating EBITDA	$	83,791	$	40,516		$	165,787		$	97,524

(2) Redemption of 6.5% senior notes due 2024 (the “2024 Senior Notes”) and 7.375% senior notes due 2025 (the “2025 Senior Notes”).            

FORM 10-Q

QUARTERLY REPORT - PAGE 22

Selected Production, Sales and Other Data

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Pulp Segment
Pulp production ('000 ADMTs)
NBSK		355.1		423.8		752.0		879.0
NBHK		4.5		88.8		86.1		167.8
Annual maintenance downtime ('000 ADMTs)		173.1		11.3		210.9		13.6
Annual maintenance downtime (days)		117		15		144		17
Pulp sales ('000 ADMTs)
NBSK		330.4		422.6		749.1		860.9
NBHK		30.3		69.3		99.4		135.4
Average NBSK pulp prices ($/ADMT)(1)
Europe		1,288		850		1,163		842
China		962		572		922		573
North America		1,598		1,158		1,450		1,143
Average NBHK pulp prices ($/ADMT)(1)
China		767		465		729		463
North America		1,297		897		1,158		893
Average pulp sales realizations ($/ADMT)(2)
NBSK		830		573		739		567
NBHK		672		475		566		472
Energy production ('000 MWh)(3)		362.0		562.9		881.1		1,141.3
Energy sales ('000 MWh)(3)		130.9		222.0		332.0		453.7
Average energy sales realizations ($/MWh)(3)		90		85		94		90
Wood Products Segment
Lumber production (MMfbm)		116.7		113.5		234.5		229.8
Lumber sales (MMfbm)		109.3		109.0		217.5		226.7
Average lumber sales realizations ($/Mfbm)		789		345		706		347
Energy production and sales ('000 MWh)		21.0		22.7		37.3		45.4
Average energy sales realizations ($/MWh)		128		116		129		116
Average Spot Currency Exchange Rates
$ / €(4)		1.2050		1.1016		1.2048		1.1019
$ / C$(4)		0.8142		0.7221		0.8026		0.7328

(1) Source: RISI pricing report. Europe and North America are list prices. China are net prices which include discounts, allowances and rebates.

(2) Sales realizations after customer discounts, rebates and other selling concessions. Incorporates the effect of pulp price variations occurring between the order and shipment dates.

(3) Does not include our 50% joint venture interest in the Cariboo mill, which is accounted for using the equity method.

(4) Average Federal Reserve Bank of New York Noon Buying Rates over the reporting period.

Consolidated ‑ Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Total revenues for the three months ended June 30, 2021 increased by approximately 18% to $401.8 million from $341.2 million in the same quarter of 2020 primarily due to higher pulp and lumber sales realizations partially offset by lower pulp sales volumes.

Costs and expenses in the current quarter increased by approximately 6% to $350.0 million from $330.9 million in the second quarter of 2020 primarily due to higher maintenance costs and the negative impact of a weaker dollar on our Canadian dollar and euro denominated costs and expenses partially offset by lower pulp sales volumes.

In the second quarter of 2021, cost of sales depreciation and amortization increased to $31.9 million from $30.2 million in the same quarter of 2020 primarily due to the negative impact of a weaker dollar.

FORM 10-Q

QUARTERLY REPORT - PAGE 23

Selling, general and administrative expenses increased by approximately 23% to $20.2 million in the second quarter of 2021 from $16.4 million in the same quarter of 2020 primarily due to the negative impact of a weaker dollar and higher stock based compensation expense.

In the second quarter of 2021, our operating income increased to $51.8 million from $10.3 million in the same quarter of 2020 primarily due to higher pulp and lumber sales realizations partially offset by higher maintenance costs, the negative impact of a weaker dollar on our Canadian dollar and euro denominated costs and expenses and lower pulp sales volumes.

Interest expense in the current quarter decreased to $17.1 million from $20.1 million in the same quarter of 2020 primarily as a result of a lower weighted average interest rate.

In the second quarter of 2021, other expenses were $2.6 million compared to other income of $2.3 million in the same quarter of 2020. Other expenses in the current quarter is primarily due to foreign exchange losses on U.S. dollar denominated cash balances.

During the second quarter of 2021, the provision for income taxes was $10.7 million or an effective tax rate of approximately 33%. In the comparative quarter of 2020, the provision for income taxes was $0.9 million primarily due to tax for our German operations being only partially offset by tax recoveries for our Canadian operations.

For the second quarter of 2021, our net income was $21.4 million, or $0.32 per share compared to a net loss of $8.4 million, or $0.13 per share, in the same quarter of 2020.

In the second quarter of 2021, Operating EBITDA increased to $83.8 million from $40.5 million in the same quarter of 2020 primarily due to higher pulp and lumber sales realizations partially offset by higher maintenance costs, the negative impact of a weaker dollar and lower pulp sales volumes.

Operating Results by Business Segment

None of the income or loss items following operating income in our Interim Consolidated Statements of Operations are allocated to our segments, since those items are reviewed separately by management.

Pulp Segment ‑ Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Selected Financial Information

	Three Months Ended June 30,
	2021		2020
	(in thousands)
Pulp revenues	$	297,191	$	276,919
Energy and chemical revenues	$	13,058	$	21,127
Depreciation and amortization	$	27,967	$	27,219
Operating income	$	13,338	$	8,110

Pulp revenues in the second quarter of 2021 increased by approximately 7% to $297.2 million from $276.9 million in the same quarter of 2020 due to higher sales realizations partially offset by lower sales volumes.

Energy and chemical revenues decreased by approximately 38% to $13.1 million in the second quarter of 2021 from $21.1 million in the same quarter of 2020 primarily due to lower energy production as a result of annual maintenance downtime.

NBSK pulp production declined by approximately 16% to 355,103 ADMTs in the current quarter from 423,773 ADMTs in the same quarter of 2020 primarily due to capital projects and maintenance downtime. In the current quarter of 2021, our pulp mills had 117 days of maintenance downtime (approximately 173,100 ADMTs) including our 50% owned Cariboo mill. Approximately 79 days of such downtime was at our Peace River mill and primarily related to boiler work which was deferred from last year relating to a 2017 incident. The Peace River mill

FORM 10-Q

QUARTERLY REPORT - PAGE 24

maintenance shut was about 25 days longer than planned, nine days of which were in July, but we expect the majority of this extra downtime will be covered by our insurance.

In the second quarter of 2021, we received insurance proceeds of $20.0 million in connection with the costs of the Peace River mill boiler work along with an initial payment of $4.2 million for our business interruption insurance claims. We currently expect our remaining business interruption insurance claim to be in excess of $15 million.

We estimate that annual maintenance downtime in the current quarter adversely impacted our operating income by approximately $80.1 million, comprised of approximately $45.0 million in direct out-of-pocket expenses and the balance in reduced production (exclusive of business interruption insurance proceeds).

In the third quarter of 2021, excluding our 50% owned Cariboo mill, we have 24 days of scheduled maintenance. Also, while our Rosenthal mill will be operating and producing pulp, in the third quarter of 2021 it will take down and rebuild its turbine. This work is expected to continue into the early fourth quarter and require the mill to purchase its energy requirements.  

NBSK pulp sales volumes decreased by approximately 22% to 330,425 ADMTs in the current quarter from 422,586 ADMTs in the same quarter of 2020 primarily due to lower production.

In the current quarter of 2021, prices for NBSK pulp increased from the same quarter of 2020 largely as a result of strong demand and low customer inventory levels. Average list prices for NBSK pulp in Europe and North America were approximately $1,288 per ADMT and $1,598 per ADMT, respectively in the second quarter of 2021 compared to approximately $850 per ADMT and $1,158 per ADMT, respectively, in the same quarter of 2020. Average NBSK net prices in China were approximately $962 per ADMT in the current quarter compared to approximately $572 per ADMT in the same quarter of 2020.

Average NBSK pulp sales realizations increased by approximately 45% to $830 per ADMT in the second quarter of 2021 from approximately $573 per ADMT in the same quarter of 2020.

In the current quarter of 2021, primarily as a result of the effect of the weaker dollar on our Canadian dollar and euro denominated costs and expenses, we recorded a negative impact of approximately $23.3 million in operating income due to foreign exchange compared to the same quarter of 2020.

Costs and expenses in the current quarter increased by approximately 2% to $297.0 million from $290.1 million in the second quarter of 2020 primarily due to higher maintenance costs and the negative impact of a weaker dollar partially offset by lower pulp sales volumes.

On average, in the current quarter overall per unit fiber costs were flat when compared to the same quarter of 2020. In the current quarter, per unit fiber costs for our German mills declined due to the continued availability of beetle damaged wood. For our Canadian mills, per unit fiber costs increased due to a higher proportion of more expensive softwood chips due to the annual maintenance downtime at the Peace River mill. We currently expect modestly higher per unit fiber costs in the third quarter of 2021 due to strong fiber demand.

Transportation costs for our pulp segment decreased to $24.9 million in the current quarter from $34.6 million in the same quarter of 2020 primarily as a result of lower sales volumes.  

In the second quarter of 2021, depreciation and amortization increased to $28.0 million from $27.2 million in the same quarter of 2020 primarily due to the negative impact of a weaker dollar.  

In the second quarter of 2021, pulp segment operating income increased by approximately 64% to $13.3 million from $8.1 million in the same quarter of 2020 as higher pulp sales realizations were only partially offset by higher maintenance costs, the negative impact of a weaker dollar and lower pulp sales volumes.

FORM 10-Q

QUARTERLY REPORT - PAGE 25

Wood Products Segment ‑ Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Selected Financial Information

	Three Months Ended June 30,
	2021		2020
	(in thousands)
Lumber revenues	$	86,285	$	37,611
Energy revenues	$	2,692	$	2,629
Wood residual revenues	$	1,462	$	1,487
Depreciation and amortization	$	3,748	$	2,804
Operating income	$	42,314	$	4,327

In the second quarter of 2021, lumber revenues increased to $86.3 million from $37.6 million in the same quarter of 2020 due to higher sales realizations. In the current quarter, both the U.S. and European markets were strong. The U.S. market accounted for approximately 62% of our lumber revenues and approximately 39% of our lumber sales volumes. The majority of our remaining sales were to Europe.

Energy and wood residual revenues in the second quarter of 2021 were flat at $4.2 million compared to $4.1 million in the same quarter of 2020.

Lumber production increased by approximately 3% to 116.7 MMfbm in the current quarter of 2021 from 113.5 MMfbm in the same quarter of 2020 primarily due to capital improvements. In the third quarter of 2021, our Friesau sawmill has four weeks of seasonal scheduled downtime.

Average lumber sales realizations increased to $789 per Mfbm in the second quarter of 2021 from approximately $345 per Mfbm in the same quarter of 2020 due to higher pricing in both the U.S. and European markets. U.S. lumber pricing increased due to strong demand from the housing and renovation markets. European lumber pricing increased due to steady demand with limited supply.

Fiber costs were approximately 75% of our lumber cash production costs in the current quarter. In the current quarter per unit fiber costs increased by approximately 30% from the same quarter of 2020 primarily due to strong demand for sawlogs and the negative impact of a weaker dollar on our euro denominated fiber costs. We currently expect modestly increasing per unit fiber costs in the third quarter of 2021 due to continued strong demand.

In the second quarter of 2021, depreciation and amortization increased to $3.7 million from $2.8 million in the same quarter of 2020 primarily due to the completion of capital projects.  

Transportation costs for our wood products segment in the second quarter of 2021 increased by approximately 15% to $8.3 million from $7.2 million in the same quarter of 2020 primarily due to the negative impact of a weaker dollar on our euro denominated transportations costs.

In the second quarter of 2021, our wood products segment had record operating income of $42.3 million compared to $4.3 million in the same quarter of 2020 primarily due to a higher lumber realized sales price.  

Consolidated ‑ Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Total revenues for the first half of 2021 increased by approximately 18% to $814.6 million from $691.8 million in the first half of 2020 primarily due to higher pulp and lumber sales realizations partially offset by lower pulp sales volumes.

FORM 10-Q

QUARTERLY REPORT - PAGE 26

Costs and expenses in the first half of 2021 increased by approximately 8% to $711.7 million from $657.4 million in the first half of 2020 primarily due to the negative impact of a weaker dollar on our Canadian dollar and euro denominated costs and expenses and higher maintenance costs partially offset by lower pulp sales volumes and lower per unit fiber costs.

In the first half of 2021, cost of sales depreciation and amortization slightly decreased to $62.9 million from $63.1 million in the same period of 2020.

Selling, general and administrative expenses increased by approximately 20% to $40.8 million in the first half of 2021 from $33.9 million in the first half of 2020 primarily due to the negative impact of a weaker dollar and higher stock based compensation expense.

In the first half of 2021, our operating income increased to $102.9 million from $34.4 million in the same period of 2020 primarily due to higher pulp and lumber sales realizations and lower per unit fiber costs partially offset by the negative impact of a weaker dollar, higher maintenance costs and lower pulp and energy sales volumes.

In January 2021, we refinanced (the “Refinancing”) a significant portion of our debt by issuing $875.0 million of 5.125% senior notes due 2029 (the “2029 Senior Notes”) and used the proceeds to redeem and/or repurchase all of our 6.5% 2024 Senior Notes and 7.375% 2025 Senior Notes at a cost including premium of $824.6 million (the “Redemption”). We recorded a loss on such Redemption of $30.4 million (being $0.46 per share). The Refinancing reduced our annual interest expense going forward by approximately $12 million.

Interest expense in the first half of 2021 decreased to $36.1 million from $40.2 million in the same period of 2020 primarily as a result of a lower interest rate for our 2029 Senior Notes.

In the first half of 2021, other income increased to $4.4 million from $0.2 million in the same period of 2020. Other income in the first half of 2021 is primarily due to foreign exchange gains on U.S. dollar denominated cash balances.

During the first half of 2021, the provision for income taxes was $13.4 million or an effective tax rate of 33%. In the same period of 2020, the provision for income taxes was $6.2 million due to tax for our German operations being only partially offset by tax recoveries for our Canadian operations.

For the first half of 2021, our net income was $27.3 million, or $0.41 per share compared to a net loss of $11.8 million, or $0.18 per share, in the same period of 2020.

In the first half of 2021, Operating EBITDA increased by approximately 70% to $165.8 million from $97.5 million in the same period of 2020 primarily due to higher pulp and lumber sales realizations and lower per unit fiber costs partially offset by higher maintenance costs, the negative impact of a weaker dollar and lower pulp and energy sales volumes.

Pulp Segment ‑ Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Selected Financial Information

	Six Months Ended June 30,
	2021		2020
	(in thousands)
Pulp revenues	$	614,773	$	555,867
Energy and chemical revenues	$	35,232	$	45,784
Depreciation and amortization	$	55,013	$	57,590
Operating income	$	38,634	$	29,549

Pulp revenues in the first half of 2021 increased by approximately 11% to $614.8 million from $555.9 million in the same period of 2020 due to higher sales realizations partially offset by lower sales volumes.

FORM 10-Q

QUARTERLY REPORT - PAGE 27

Energy and chemical revenues decreased by approximately 23% to $35.2 million in the first half of 2021 from $45.8 million in the same period of 2020 primarily due to lower energy production as a result of annual maintenance downtime.

NBSK pulp production decreased by approximately 14% to 751,968 ADMTs in the first half of 2021 from 878,965 ADMTs in the same period of 2020 primarily due to annual maintenance downtime at our pulp mills. In the first half of 2021, our pulp mills had 144 days of annual maintenance downtime (approximately 210,900 ADMTs) including our 50% owned Cariboo mill. Approximately 79 days of such downtime was at our Peace River mill and primarily related to boiler work which was deferred from last year. In the first half of 2021, we received insurance proceeds of $20.0 million in connection with the costs of this mill's boiler work along with an initial payment of $4.2 million for our business interruption insurance claims.

We estimate that annual maintenance downtime in the first half of 2021 adversely impacted our operating income by approximately $110.4 million, comprised of approximately $66.8 million in direct out-of-pocket expenses and the balance in reduced production (exclusive of business interruption insurance proceeds).

NBSK pulp sales volumes decreased by approximately 13% to 749,070 ADMTs in the first half of 2021 from 860,912 ADMTs in the same period of 2020 primarily due to lower production.  

In the first half of 2021, prices for NBSK pulp increased from the same period of 2020, largely as a result of strong demand and low customer inventory levels. Average list prices for NBSK pulp in Europe and North America were approximately $1,163 per ADMT and $1,450 per ADMT, respectively in the first half of 2021 compared to approximately $842 per ADMT and $1,143 per ADMT, respectively, in the same period of 2020. Average NBSK net prices in China were approximately $922 per ADMT in the first half of 2021 compared to approximately $573 per ADMT in the first half of 2020.

Average NBSK pulp sales realizations increased by approximately 30% to $739 per ADMT in the first half of 2021 from approximately $567 per ADMT in the same period of 2020.

In the first half of 2021, primarily as a result of the effect of the weakening dollar on our Canadian dollar and euro denominated costs and expenses, we recorded a negative impact of approximately $54.8 million in operating income due to foreign exchange compared to the same period of 2020.

Costs and expenses in the first half of 2021 increased by approximately 7% to $611.5 million from $572.4 million in the first half of 2020 primarily due to higher maintenance costs and the negative impact of a weaker dollar partially offset by lower pulp sales volumes and per unit fiber costs.

On average, in the first half of 2021 overall per unit fiber costs decreased by approximately 5% from the same period of 2020 due to lower per unit fiber costs for all of our mills. In the first half of 2021, per unit fiber costs for our German mills declined due to the continued availability of beetle damaged wood. For our Canadian mills, per unit fiber costs declined due to improved chip supply as a result of increased sawmill activity.

Transportation costs for our pulp segment decreased to $61.1 million in the first half of 2021 from $70.2 million in the same period of 2020 primarily as a result of lower pulp sales volumes.  

In the first half of 2021, depreciation and amortization decreased to $55.0 million from $57.6 million in the same period of 2020.

In the first half of 2021, pulp segment operating income increased by approximately 31% to $38.6 million from $29.5 million in the same period of 2020 as higher pulp sales realizations and lower per unit fiber costs were only partially offset by higher maintenance costs, the negative impact of a weaker dollar and lower pulp and energy sales volumes.

FORM 10-Q

QUARTERLY REPORT - PAGE 28

Wood Products Segment ‑ Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Selected Financial Information

	Six Months Ended June 30,
	2021		2020
	(in thousands)
Lumber revenues	$	153,596	$	78,597
Energy revenues	$	4,806	$	5,260
Wood residual revenues	$	3,024	$	3,648
Depreciation and amortization	$	7,471	$	5,181
Operating income	$	70,291	$	9,882

In the first half of 2021, lumber revenues increased to $153.6 million from $78.6 million in the same period of 2020 due to higher sales realizations. In the first half of 2021, both the U.S. and European markets were strong. The U.S. market accounted for approximately 64% of our lumber revenues and approximately 41% of our lumber sales volumes, while the majority of remaining sales were to Europe.

Energy and wood residual revenues decreased by approximately 12% to $7.8 million in the first half of 2021 from $8.9 million in the same period of 2020 primarily due to lower sales realizations for wood residuals.  

Lumber production increased by approximately 2% to 234.5 MMfbm in the first half of 2021 from 229.8 MMfbm in the same period of 2020 primarily due to capital improvements.    

Average lumber sales realizations increased to $706 per Mfbm in the first half of 2021 from approximately $347 per Mfbm in the same period of 2020 primarily due to higher pricing in the U.S. and European markets. U.S. lumber pricing increased due to strong demand from the housing and renovation markets. European lumber pricing increased due to steady demand with limited supply.

Fiber costs were approximately 75% of our lumber cash production costs in the first half of 2021. In the first half of 2021 per unit fiber costs increased by approximately 18% from the same period of 2020 primarily due to the negative impact of a weaker dollar on our euro denominated fiber costs and strong demand for sawlogs.

In the first half of 2021, depreciation and amortization increased to $7.5 million from $5.2 million in the same period of 2020 primarily due to the completion of capital projects.  

Transportation costs for our wood products segment in the first half of 2021 increased by approximately 15% to $16.1 million from $14.0 million in the same period of 2020 primarily due to the negative impact of a weaker dollar on our euro denominated transportations costs.

In the first half of 2021, our wood products segment had operating income of $70.3 million compared to $9.9 million in the same period of 2020 primarily due to a higher lumber realized sales price.  

Liquidity and Capital Resources

Summary of Cash Flows

	Six Months Ended June 30,
	2021			2020
	(in thousands)
Net cash from (used in) operating activities	$	111,440		$	(5,737	)
Net cash used in investing activities		(68,656	)		(44,242	)
Net cash from (used in) financing activities		(16,751	)		4,902
Effect of exchange rate changes on cash and cash equivalents		(2,597	)		(2,674	)
Net increase (decrease) in cash and cash equivalents	$	23,436		$	(47,751	)

FORM 10-Q

QUARTERLY REPORT - PAGE 29

We operate in a cyclical industry and our operating cash flows vary accordingly. Our principal operating cash expenditures are for fiber, labor and chemicals. Working capital levels fluctuate throughout the year and are affected by maintenance downtime, changing sales patterns, seasonality and the timing of receivables and sales and the payment of payables and expenses.

Cash Flows from Operating Activities. Cash provided by operating activities was $111.4 million in the six months ended June 30, 2021 compared to cash used in operating activities of $5.7 million in the comparative period of 2020. In the first half of 2021, a decrease in accounts receivable provided cash of $3.9 million compared to an increase in accounts receivable using cash of $6.0 million in the same period of 2020. In the first half of 2021, an increase in inventories used cash of $42.8 million in the six months ended June 30, 2021 compared to $6.7 million in the same period of 2020. An increase in accounts payable and accrued expenses provided cash of $34.6 million compared to a decrease in accounts payable and accrued expenses using cash of $49.8 million in the same period of 2020.

Cash Flows from Investing Activities. Investing activities in the six months ended June 30, 2021 used cash of $68.7 million. In the first half of 2021, capital expenditures were $87.4 million and included the Peace River recovery boiler rebuild, which was financed with insurance proceeds of $20.0 million, capacity expansion projects at the Stendal mill, the substantial completion of the Phase II expansion and optimization project at our Friesau sawmill and other smaller maintenance and optimization projects. In the six months ended June 30, 2020, investing activities used cash of $44.2 million primarily related to capital expenditures.

Cash Flows from Financing Activities. In the first half of 2021, financing activities used cash of $16.8 million. In the six months ended June 30, 2021, we repaid $57.1 million of our credit facilities, received net proceeds from the Refinancing after giving effect to the Redemption of $50.4 million, we paid note issuance costs of $14.4 million related to the issuance of the 2029 Senior Notes and paid $4.3 million of dividends. In the six months ended June 30, 2021, we received $8.5 million in government grants to partially finance innovation and greenhouse gas emission reduction capital projects at our Canadian mills. In the first half of 2020, financing activities provided cash of $4.9 million primarily from $25.6 million of borrowings under our revolving credit facilities. In the six months ended June 30, 2020 we paid dividends of $9.0 million and used $0.2 million to repurchase common shares.

Balance Sheet Data

The following table is a summary of selected financial information as of the dates indicated:

	June 30,		December 31,
	2021		2020
	(in thousands)
Cash and cash equivalents	$	384,534	$	361,098
Working capital	$	672,237	$	663,056
Total assets	$	2,214,698	$	2,129,126
Long-term liabilities	$	1,345,200	$	1,316,303
Total shareholders' equity	$	604,134	$	601,027

FORM 10-Q

QUARTERLY REPORT - PAGE 30

Sources and Uses of Funds

Our principal sources of funds are cash flows from operations and cash and cash equivalents on hand. Our principal uses of funds consist of operating expenditures, capital expenditures and interest payments on our senior notes.

The following table sets out our total capital expenditures and interest expense for the periods indicated:

	Six Months Ended June 30,
	2021		2020
	(in thousands)
Capital expenditures(1)	$	87,386	$	44,562
Cash paid for interest expense(2)	$	40,110	$	38,228
Interest expense(3)	$	36,149	$	40,192

(1) Includes expenditures for the recovery boiler rebuild at the Peace River mill which is financed with insurance proceeds of $20.0 million.

(2) Amounts differ from interest expense which includes non-cash items. See supplemental disclosure of cash flow information from our Interim Consolidated Statements of Cash Flows included in this report.

(3) Interest on our 2024 Senior Notes was paid semi-annually in February and August of each year and interest on our 2025 Senior Notes was paid semi-annually in January and July of each year. In January 2021, we redeemed our 2024 Senior Notes and 2025 Senior Notes.  Interest on our senior notes due 2026 is paid semi-annually in January and July of each year. Interest on our 2029 Senior Notes is paid semi-annually in February and August of each year, commencing August 2021.

As of June 30, 2021 we had cash and cash equivalents of $384.5 million and approximately $310.4 million available under our revolving credit facilities and as a result aggregate liquidity of about $694.9 million.

As of June 30, 2021, we have received approximately $15.8 million in government grants to partially finance greenhouse gas emission reduction capital projects and innovation at our Canadian mills. These projects include upgrades to the woodrooms at such mills which are also expected to reduce fiber costs. As a result of such new woodroom projects, our expected 2021 capital expenditures, excluding amounts financed by government grants and expected insurance proceeds, will be approximately $185 million.

We currently consider the majority of undistributed earnings of our foreign subsidiaries to be indefinitely reinvested and, accordingly, no U.S. income tax has been provided on such earnings. However, if we were required to repatriate funds to the United States, we believe that we currently could repatriate the majority thereof without incurring any material amount of taxes as a result of our shareholder advances and U.S. tax reform. However, it is currently not practical to estimate the income tax liability that might be incurred if such earnings were remitted to the United States. Substantially all of our undistributed earnings are held by our foreign subsidiaries outside of the United States.

Based upon the current level of operations and our current expectations for future periods in light of the current economic environment, and in particular, current and expected pulp and lumber pricing and foreign exchange rates, we believe that cash flow from operations and available cash, together with available borrowings under our revolving credit facilities, will be adequate to finance the capital requirements for our business including the payment of our quarterly dividend during the next 12 months.

In the future we may make acquisitions of businesses or assets or commitments to additional capital projects. To achieve the long-term goals of expanding our assets and earnings, including through acquisitions, capital resources will be required. Depending on the size of a transaction, the capital resources that will be required can be substantial. The necessary resources will be generated from cash flow from operations, cash on hand, borrowing against our assets or the issuance of securities.

FORM 10-Q

QUARTERLY REPORT - PAGE 31

Debt Covenants

Certain of our long-term obligations contain various financial tests and covenants customary to these types of arrangements. See our annual report on Form 10-K for the fiscal year ended December 31, 2020.

As of June 30, 2021, we were in full compliance with all of the covenants of our indebtedness.

Off-Balance Sheet Arrangements

At June 30, 2021, we did not have any off-balance sheet arrangements (as defined in Item 303(a)(4)(ii) of Regulation S-K).

Contractual Obligations and Commitments

There were no material changes outside the ordinary course to any of our material contractual obligations during the six months ended June 30, 2021.

Foreign Currency

As a majority of our assets, liabilities and expenditures are held or denominated in euros or Canadian dollars, our consolidated financial results are subject to foreign currency exchange rate fluctuations.

We translate foreign denominated assets and liabilities into dollars at the rate of exchange on the balance sheet date. Equity accounts are translated using historical exchange rates. Unrealized gains or losses from these translations are recorded in other comprehensive income (loss) and do not affect our net earnings.

As a result of the strengthening of the dollar versus the euro as of June 30, 2021, we recorded a net non-cash decrease of $17.6 million in the carrying value of our net assets, consisting primarily of our fixed assets denominated in euros. This non-cash decrease does not affect our net income (loss), Operating EBITDA or cash but is reflected in our other comprehensive income (loss) and as a decrease to our total equity. As a result, our accumulated other comprehensive loss increased to $44.8 million.

Based upon the exchange rate as of June 30, 2021, the dollar has strengthened by approximately 3% against the euro and has weakened by approximately 3% against the Canadian dollar since December 31, 2020. See "Quantitative and Qualitative Disclosures about Market Risk".

Credit Rating of Senior Notes

We and our Senior Notes are rated by Standard & Poor's Rating Services, referred to as “S&P”.

In June 2021, S&P revised its outlook to stable from negative and confirmed its rating on our senior Notes is B+. Its recovery rating remained unchanged at “3”. Credit ratings are not recommendations to buy, sell or hold securities and may be subject to revision or withdrawal by the assigning rating organization. Each rating should be evaluated independently of any other rating.

Critical Accounting Policies

The preparation of financial statements and related disclosures in conformity with GAAP requires management to make estimates and assumptions that affect both the amount and the timing of the recording of assets, liabilities, revenues, and expenses in the consolidated financial statements and accompanying note disclosures. Our management routinely makes judgments and estimates about the effects of matters that are inherently uncertain. As the number of variables and assumptions affecting the probable future resolution of the uncertainties increases, these judgments become even more subjective and complex.

Our significant accounting policies are disclosed in Note 1 to our audited annual financial statements included in our annual report on Form 10-K for the fiscal year ended December 31, 2020. While all of the significant accounting

FORM 10-Q

QUARTERLY REPORT - PAGE 32

policies are important to the consolidated financial statements, some of these policies may be viewed as having a high degree of judgment. On an ongoing basis using currently available information, management reviews its estimates, including those related to 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.

We have identified certain accounting policies that are the most important to the portrayal of our current financial condition and results of operations.

For information about both our significant and critical accounting policies, see our annual report on Form 10-K for the fiscal year ended December 31, 2020.

Cautionary Statement Regarding Forward-Looking Information

The statements in this report that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, as amended.

Generally, forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include words such as "expects", "anticipates", "intends", "plans", "believes", "seeks", "estimates", or words of similar meaning, or future or conditional verbs, such as "will", "should", "could", or "may", although not all forward-looking statements contain these identifying words. Forward-looking statements are based on expectations, forecasts and assumptions by our management and involve a number of risks, uncertainties and other factors, many of which are beyond our control, that could cause actual conditions, events or results to differ significantly from those described in the forward-looking statements. These factors include, but are not limited to, the following:

Risks Related to our Business

• the COVID-19 pandemic could materially adversely affect our business, financial position and results of operations;

• our business is highly cyclical in nature;

• cyclical fluctuations in the price and supply of our raw materials, particularly fiber, could adversely affect our business;

• we face intense competition in our markets;

• our business is subject to risks associated with climate change and social and government responses thereto;

• our operations require substantial capital and we may be unable to maintain adequate capital resources to provide for such capital requirements;

• we have limited control over the operations of the Cariboo mill;

• fluctuations in prices and demand for lumber could adversely affect our business;

• adverse housing market conditions may increase the credit risk from customers of our wood products segment;

FORM 10-Q

QUARTERLY REPORT - PAGE 33

• our wood products segment lumber products are vulnerable to declines in demand due to competing technologies or materials;

• we may experience material disruptions to our production;

• future acquisitions may result in additional risks and uncertainties in our business;

• we are subject to risks related to our employees;

• we are dependent on key personnel;

• if our long-lived assets become impaired, we may be required to record non-cash impairment charges that could have a material impact on our results of operations;

• our insurance coverage may not be adequate;

• we rely on third parties for transportation services;

• we periodically use derivatives to manage certain risks which could cause significant fluctuations in our operating results;

• failures or security breaches of our information technology systems could disrupt our operations and negatively impact our business;

Risks Related to our Debt

• our level of indebtedness could negatively impact our financial condition, results of operations and liquidity;

• changes in credit ratings issued by nationally recognized statistical rating organizations could adversely affect our cost of financing and have an adverse effect on the market price of our securities;

• we are exposed to interest rate fluctuations;

Risks Related to Macro-economic Conditions

• a weakening of the global economy, including capital and credit markets, could adversely affect our business and financial results and have a material adverse effect on our liquidity and capital resources;

• we are exposed to currency exchange rate fluctuations;

• political uncertainty and an increase in trade protectionism could have a material adverse effect on global macro-economic activities and trade and adversely affect our business, results of operations and financial condition;

• we may incur losses as a result of unforeseen or catastrophic events, including the emergence of a pandemic, terrorist attacks or natural disasters;

Legal and Regulatory Risks

• we are subject to extensive environmental regulation and we could incur substantial costs as a result of compliance with, violations of or liabilities under applicable environmental laws and regulations;

FORM 10-Q

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• we participate in German statutory energy programs;

• our international sales and operations are subject to applicable laws relating to trade, export controls and foreign corrupt practices, the violation of which could adversely affect our operations;

Risks Related to Ownership of our Shares

• the price of our common stock may be volatile; and

• a small number of our shareholders could significantly influence our business.

Given these uncertainties, you should not place undue reliance on our forward-looking statements. The foregoing review of important factors is not exhaustive or necessarily in order of importance and should be read in conjunction with the risks and assumptions including those set forth under "Part II. Other Information – Item 1A. Risk Factors" and in reports and other documents we have filed with or furnished to the SEC, including in our annual report on Form 10-K for the fiscal year ended December 31, 2020. We advise you that these cautionary remarks expressly qualify in their entirety all forward-looking statements attributable to us or persons acting on our behalf. Unless required by law, we do not assume any obligation to update forward-looking statements based on unanticipated events or changed expectations. However, you should carefully review the reports and other documents we file from time to time with the SEC.

Cyclical Nature of Business

Revenues

The pulp and lumber businesses are highly cyclical in nature and markets are characterized by periods of supply and demand imbalance, which in turn can materially affect prices. Pulp and lumber markets are sensitive to cyclical changes in the global economy, industry capacity and foreign exchange rates, all of which can have a significant influence on selling prices and our operating results. The length and magnitude of industry cycles have varied over time but generally reflect changes in macro-economic conditions and levels of industry capacity. Pulp and lumber are commodities that are generally available from other producers. Because commodity products have few distinguishing qualities from producer to producer, competition is generally based upon price, which is generally determined by supply relative to demand.

Industry capacity can fluctuate as changing industry conditions can influence producers to idle production capacity or permanently close mills. In addition, to avoid substantial cash costs in idling or closing a mill, some producers will choose to operate at a loss, sometimes even a cash loss, which can prolong weak pricing environments due to oversupply. Oversupply of our products can also result from producers introducing new capacity in response to favorable pricing trends. Certain integrated pulp and paper producers have the ability to discontinue paper production by idling their paper machines and selling their pulp production on the market, if market conditions, prices and trends warrant such actions.

Demand for each of pulp and lumber has historically been determined primarily by general global macro-economic conditions and has been closely tied to overall business activity. Pulp prices have been and are likely to continue to be volatile and can fluctuate widely over time. Between 2011 and 2021, European list prices for NBSK pulp have fluctuated between a low of approximately $760 per ADMT in 2012 to a high of $1,345 per ADMT in 2021. In the same period, the average North American NBHK price has fluctuated between a low of $700 per ADMT in 2012 to a high of $1,350 per ADMT in 2021.

Our mills and operations voluntarily subject themselves to third-party certification as to compliance with internationally recognized, sustainable management standards because end use paper and lumber customers have shown an increased interest in understanding the origin of products they purchase. Demand for our products could be adversely affected if we, or our suppliers, are unable to achieve compliance, or are perceived by the public as failing to comply, with these standards or if our customers require compliance with alternate standards for which our operations are not certified.

FORM 10-Q

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A pulp producer's actual sales price realizations are net of customer discounts, rebates and other selling concessions.  

Accordingly, prices for pulp and lumber are driven by many factors outside our control, and we have little influence over the timing and extent of price changes, which are often volatile. Because market conditions beyond our control determine the prices for pulp and lumber, prices may fall below our cash production costs, requiring us to either incur short-term losses on product sales or cease production at one or more of our mills. Therefore, our profitability depends on managing our cost structure, particularly raw materials which represent a significant component of our operating costs and can fluctuate based upon factors beyond our control. If the prices of our products decline, or if prices for our raw materials increase, or both, our results of operations and cash flows could be materially adversely affected.

Costs

Our production costs are influenced by the availability and cost of raw materials, energy and labor, and our plant efficiencies and productivity. Our main raw material is fiber in the form of wood chips, pulp logs and sawlogs. Wood chip, pulp log and sawlog costs are primarily affected by the supply of, and demand for, lumber and pulp, which are both highly cyclical. Higher fiber prices could affect producer profit margins if they are unable to pass along price increases to pulp and lumber customers or purchasers of surplus energy.

Currency

We have manufacturing operations in Germany and Canada. Most of the operating costs and expenses of our German mills are incurred in euros and those of our Canadian mills in Canadian dollars. However, the majority of our sales are in products quoted in dollars. Our results of operations and financial condition are reported in dollars. As a result, our costs generally benefit from a strengthening dollar but are adversely affected by a decrease in the value of the dollar relative to the euro and to the Canadian dollar. Such declines in the dollar relative to the euro and the Canadian dollar reduce our operating margins and the cash flow available to fund our operations and to service our debt. This could have a material adverse effect on our business, financial condition, results of operations and cash flows.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risks from changes in interest rates and foreign currency exchange rates, particularly the exchange rates between the dollar and the euro and Canadian dollar. Changes in these rates may affect our results of operations and financial condition and, consequently, our fair value. We seek to manage these risks through internal risk management policies as well as the periodic use of derivatives.

For additional information, please refer to Part II, Item 7A. Quantitative and Qualitative Disclosures about Market Risk included in our annual report on Form 10-K for the fiscal year ended December 31, 2020.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, referred to as the "Exchange Act"), as of the end of the period covered by this report. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in the reports we file or submit under the Exchange Act is accumulated and communicated to management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. Based on such evaluation, our principal executive officer and principal financial officer have concluded that, as of the end of the period covered by this report, our disclosure controls and procedures are effective in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by us in the reports that we file or submit under the Exchange Act.

FORM 10-Q

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It should be noted that any system of controls is based in part upon certain assumptions designed to obtain reasonable (and not absolute) assurance as to its effectiveness and there can be no assurance that any design will succeed in achieving its stated goals.

Changes in Internal Controls

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

FORM 10-Q

QUARTERLY REPORT - PAGE 37

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are subject to routine litigation incidental to our business, including that which is described in our latest annual report on Form 10-K for the fiscal year ended December 31, 2020. We do not believe that the outcome of such litigation will have a material adverse effect on our business or financial condition.

ITEM 1A. RISK FACTORS

There have been no material changes to the factors disclosed in Item 1A. Risk Factors in our annual report on Form 10-K for the fiscal year ended December 31, 2020.

ITEM 2. UNREGISTERED SALE OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

None.

FORM 10-Q

QUARTERLY REPORT - PAGE 38

ITEM 6. EXHIBITS

Exhibit No.	Description
31.1	Section 302 Certification of Chief Executive Officer
31.2	Section 302 Certification of Chief Financial Officer
32.1*	Section 906 Certification of Chief Executive Officer
32.2*	Section 906 Certification of Chief Financial Officer
101	The following financial information from the Quarterly Report on Form 10-Q for the fiscal period ended June 30, 2021 of Mercer International Inc., formatted in Inline Extensible Business Reporting Language (iXBRL): (i) Interim Consolidated Statements of Operations; (ii) Interim Consolidated Statements of Comprehensive Income (Loss); (iii) Interim Consolidated Balance Sheets; (iv) Interim Consolidated Statements of Changes in Shareholders' Equity; (v) Interim Consolidated Statements of Cash Flows; and (vi) Notes to the Interim Consolidated Financial Statements.
104	The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 has been formatted in Inline XBRL.

* In accordance with Release No. 33-8212 of the SEC, these Certifications: (i) are "furnished" to the SEC and are not "filed" for the purposes of liability under the Securities Exchange Act of 1934, as amended; and (ii) are not to be subject to automatic incorporation by reference into any of the Company's registration statements filed under the Securities Act of 1933, as amended, for the purposes of liability thereunder or any offering memorandum, unless the Company specifically incorporates them by reference therein.

FORM 10-Q

QUARTERLY REPORT - PAGE 39

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

MERCER INTERNATIONAL INC.
By:	/s/ David M. Gandossi
	David M. Gandossi
	Chief Executive Officer and President

Date: July 29, 2021

FORM 10-Q

QUARTERLY REPORT - PAGE 40

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF PERIODIC REPORT

I, David M. Gandossi, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Mercer International Inc. (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Dated: July 29, 2021
	/s/ David M. Gandossi
	David M. Gandossi
	Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF PERIODIC REPORT

I, David K. Ure, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Mercer International Inc. (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Dated: July 29, 2021
	/s/ David K. Ure
	David K. Ure
	Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF PERIODIC REPORT

I, David M. Gandossi, Chief Executive Officer of Mercer International Inc. (the "Company"), certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) the Quarterly Report on Form 10-Q of the Company for the quarterly period ended June 30, 2021 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Actof 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  July 29, 2021

/s/ David M. Gandossi

David M. Gandossi

Chief Executive Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Mercer International Inc. and will be retained by Mercer International Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF PERIODIC REPORT

I, David K. Ure, Chief Financial Officer of Mercer International Inc. (the "Company"), certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) the Quarterly Report on Form 10-Q of the Company for the quarterly period ended June 30, 2021 (the "Report") fully complies with the requirements of Section 13(a) or 15 (d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  July 29, 2021

/s/ David K. Ure

David K. Ure

Chief Financial Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Mercer International Inc. and will be retained by Mercer International Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 28, 2021
Cover [Abstract]
Entity Registrant Name	MERCER INTERNATIONAL INC.
Entity Central Index Key	0001333274
Document Type	10-Q
Document Period End Date	Jun. 30, 2021
Trading Symbol	MERC
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		66,037,552
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	000-51826
Entity Incorporation, State or Country Code	WA
Entity Tax Identification Number	47-0956945
Entity Address, Address Line One	Suite 1120
Entity Address, Address Line Two	700 West Pender Street
Entity Address, City or Town	Vancouver
Entity Address, State or Province	BC
Entity Address, Country	CA
Entity Address, Postal Zip Code	V6C 1G8
City Area Code	604
Local Phone Number	684-1099
Title of 12(b) Security	Common Stock, par value $1.00 per share
Security Exchange Name	NASDAQ
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INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenues	$ 401,832	$ 341,195	$ 814,552	$ 691,794
Costs and expenses
Cost of sales, excluding depreciation and amortization	297,826	284,333	608,023	560,389
Cost of sales depreciation and amortization	31,935	30,179	62,881	63,090
Selling, general and administrative expenses	20,235	16,368	40,783	33,938
Operating income	51,836	10,315	102,865	34,377
Other income (expenses)
Interest expense	(17,130)	(20,108)	(36,149)	(40,192)
Loss on early extinguishment of debt	0	0	(30,368)	0
Other income (expenses)	(2,606)	2,264	4,383	238
Total other expenses, net	(19,736)	(17,844)	(62,134)	(39,954)
Income (loss) before income taxes	32,100	(7,529)	40,731	(5,577)
Income tax provision	(10,685)	(882)	(13,383)	(6,226)
Net income (loss)	$ 21,415	$ (8,411)	$ 27,348	$ (11,803)
Net income (loss) per common share
Basic and diluted	$ 0.32	$ (0.13)	$ 0.41	$ (0.18)
Dividends declared per common share	$ 0.0650	$ 0.0650	$ 0.1300	$ 0.2025

XML

INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 21,415	$ (8,411)	$ 27,348	$ (11,803)
Other comprehensive income (loss), net of taxes
Foreign currency translation adjustment	18,457	44,202	(17,566)	(30,792)
Change in unrecognized losses and prior service costs related to defined benefit pension plans, net of tax expense of $nil and $681, respectively (2020 — $nil)	(58)	17	322	23
Other comprehensive income (loss), net of taxes	18,399	44,219	(17,244)	(30,769)
Total comprehensive income (loss)	$ 39,814	$ 35,808	$ 10,104	$ (42,572)

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INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Change in unrecognized losses and prior service costs related to defined benefit pension plans, tax expense	$ 0	$ 0	$ 681	$ 0

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INTERIM CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 384,534	$ 361,098
Accounts receivable, net	225,238	227,055
Inventories	313,354	271,696
Prepaid expenses and other	14,475	15,003
Total current assets	937,601	874,852
Property, plant and equipment, net	1,133,292	1,109,740
Investment in joint ventures	45,844	46,429
Amortizable intangible assets, net	50,982	51,571
Operating lease right-of-use assets	11,829	13,251
Other long-term assets	33,896	31,928
Deferred income tax	1,254	1,355
Total assets	2,214,698	2,129,126
Current liabilities
Accounts payable and other	264,459	210,994
Pension and other post-retirement benefit obligations	905	802
Total current liabilities	265,364	211,796
Debt	1,157,873	1,145,294
Pension and other post-retirement benefit obligations	31,057	31,810
Finance lease liabilities	57,039	41,329
Operating lease liabilities	8,488	9,933
Other long-term liabilities	12,130	10,909
Deferred income tax	78,613	77,028
Total liabilities	1,610,564	1,528,099
Shareholders’ equity
Common shares $1 par value; 200,000,000 authorized; 66,037,000 issued and outstanding (2020 – 65,868,000)	65,988	65,800
Additional paid-in capital	347,093	345,696
Retained earnings	235,872	217,106
Accumulated other comprehensive loss	(44,819)	(27,575)
Total shareholders’ equity	604,134	601,027
Total liabilities and shareholders’ equity	2,214,698	2,129,126
Commitments and contingencies (Note 13)

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INTERIM CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	66,037,000	65,868,000
Common Stock, Shares, Outstanding	66,037,000	65,868,000
Common Stock, Par or Stated Value Per Share	$ 1	$ 1

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INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2019	$ 550,403	$ 65,598	$ 344,994	$ 256,371	$ (116,560)
Balance (in shares) at Dec. 31, 2019		65,629
Shares issued on grants of restricted shares		$ 31	(31)
Shares issued on grants of restricted shares (in shares)		68
Shares issued on grants of performance share units		$ 195	(195)
Shares issued on grants of performance share units (in shares)		195
Stock compensation (reversal) expense	(80)		(80)
Net income (loss)	(11,803)			(11,803)
Dividends declared	(13,329)			(13,329)
Repurchase of common shares	(162)	$ (24)		(138)
Repurchase of common shares, shares		(24)
Other comprehensive income (loss)	(30,769)				(30,769)
Balance at Jun. 30, 2020	494,260	$ 65,800	344,688	231,101	(147,329)
Balance (in shares) at Jun. 30, 2020		65,868
Balance at Mar. 31, 2020	462,768	$ 65,769	344,753	243,794	(191,548)
Balance (in shares) at Mar. 31, 2020		65,800
Shares issued on grants of restricted shares		$ 31	(31)
Shares issued on grants of restricted shares (in shares)		68
Stock compensation (reversal) expense	(34)		(34)
Net income (loss)	(8,411)			(8,411)
Dividends declared	(4,282)			(4,282)
Other comprehensive income (loss)	44,219				44,219
Balance at Jun. 30, 2020	494,260	$ 65,800	344,688	231,101	(147,329)
Balance (in shares) at Jun. 30, 2020		65,868
Balance at Dec. 31, 2020	$ 601,027	$ 65,800	345,696	217,106	(27,575)
Balance (in shares) at Dec. 31, 2020	65,868	65,868
Dividends declared	$ (4,289)
Balance at Mar. 31, 2021	567,638	$ 65,920	346,186	218,750	(63,218)
Balance (in shares) at Mar. 31, 2021		65,988
Balance at Dec. 31, 2020	$ 601,027	$ 65,800	345,696	217,106	(27,575)
Balance (in shares) at Dec. 31, 2020	65,868	65,868
Shares issued on grants of restricted shares		$ 68	(68)
Shares issued on grants of restricted shares (in shares)		49
Shares issued on grants of performance share units		$ 120	(120)
Shares issued on grants of performance share units (in shares)		120
Stock compensation (reversal) expense	$ 1,585		1,585
Net income (loss)	27,348			27,348
Dividends declared	(8,582)			(8,582)
Other comprehensive income (loss)	(17,244)				(17,244)
Balance at Jun. 30, 2021	$ 604,134	$ 65,988	347,093	235,872	(44,819)
Balance (in shares) at Jun. 30, 2021	66,037	66,037
Balance at Mar. 31, 2021	$ 567,638	$ 65,920	346,186	218,750	(63,218)
Balance (in shares) at Mar. 31, 2021		65,988
Shares issued on grants of restricted shares		$ 68	(68)
Shares issued on grants of restricted shares (in shares)		49
Stock compensation (reversal) expense	975		975
Net income (loss)	21,415			21,415
Dividends declared	(4,293)			(4,293)
Other comprehensive income (loss)	18,399				18,399
Balance at Jun. 30, 2021	$ 604,134	$ 65,988	$ 347,093	$ 235,872	$ (44,819)
Balance (in shares) at Jun. 30, 2021	66,037	66,037

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INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Cash flows from (used in) operating activities
Net income (loss)	$ 21,415	$ (8,411)	$ 27,348	$ (11,803)
Adjustments to reconcile net income (loss) to cash flows from operating activities
Depreciation and amortization	31,955	30,201	62,922	63,147
Deferred income tax provision (recovery)	1,276	(4,744)	2,480	(6,075)
Inventory impairment	0	6,530	0	12,264
Loss on early extinguishment of debt	0	0	30,368	0
Defined benefit pension plans and other post-retirement benefit plan expense	856	739	1,775	1,501
Stock compensation expense (reversal)	975	(34)	1,585	(80)
Foreign exchange transaction losses (gains)	1,966	6,880	(6,640)	736
Other	356	(695)	(260)	(1,192)
Defined benefit pension plans and other post-retirement benefit plan contributions	(1,202)	(797)	(2,125)	(1,712)
Changes in working capital
Accounts receivable	16,364	14,938	3,941	(5,988)
Inventories	(21,964)	11,442	(42,763)	(6,678)
Accounts payable and accrued expenses	30,167	7,879	34,603	(49,781)
Other	(1,012)	177	(1,794)	(76)
Net cash from (used in) operating activities	81,152	64,105	111,440	(5,737)
Cash flows from (used in) investing activities
Purchase of property, plant and equipment	(62,124)	(21,544)	(87,386)	(44,562)
Insurance proceeds	20,048	0	20,048	0
Purchase of amortizable intangible assets	(568)	(89)	(1,209)	(527)
Other	285	796	(109)	847
Net cash from (used in) investing activities	(42,359)	(20,837)	(68,656)	(44,242)
Cash flows from (used in) financing activities
Redemption of senior notes	0	0	(824,557)	0
Proceeds from issuance of senior notes	0	0	875,000	0
Proceeds from (repayment of) revolving credit facilities, net	(42,042)	(25,651)	(57,112)	25,609
Dividend payments	(4,289)	0	(4,289)	(9,047)
Payment of debt issuance costs	0	0	(14,414)	0
Proceeds from government grants	0	299	8,532	299
Repurchase of common shares	0	0	0	(162)
Other	(1,832)	(1,996)	89	(11,797)
Net cash from (used in) financing activities	(48,163)	(27,348)	(16,751)	4,902
Effect of exchange rate changes on cash and cash equivalents	(1,179)	888	(2,597)	(2,674)
Net increase (decrease) in cash and cash equivalents	(10,549)	16,808	23,436	(47,751)
Cash and cash equivalents, beginning of period	395,083	286,526	361,098	351,085
Cash and cash equivalents, end of period	384,534	303,334	384,534	303,334
Supplemental cash flow disclosure:
Cash paid for interest	1,084	950	40,110	38,228
Cash paid for income taxes	3,290	1,907	5,135	14,881
Supplemental schedule of non-cash investing and financing activities:
Leased production equipment	$ 7,210	$ 1,702	$ 23,179	$ 10,696

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The Company and Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

The Company and Summary of Significant Accounting Policies

Note 1. The Company and Summary of Significant Accounting Policies

Nature of Operations and Basis of Presentation

The Interim Consolidated Financial Statements contained herein include the accounts of Mercer International Inc. ("Mercer Inc.") and all of its subsidiaries (collectively the "Company"). Mercer Inc. owns 100% of its subsidiaries with the exception of the 50% joint venture interest in the Cariboo mill with West Fraser Mills Ltd., which is accounted for using the equity method. The Company's shares of common stock are quoted and listed for trading on the NASDAQ Global Select Market.

The Interim Consolidated Financial Statements have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). The year-end Consolidated Balance Sheet data was derived from audited financial statements. The footnote disclosure included herein has been prepared in accordance with accounting principles generally accepted for interim financial statements in the United States ("GAAP"). The unaudited Interim Consolidated Financial Statements should be read together with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020. In the opinion of the Company, the unaudited Interim Consolidated Financial Statements contained herein have been prepared on a consistent basis with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020 and contain all adjustments necessary for a fair statement of the results of the interim periods included. The results for the periods included herein may not be indicative of the results for the entire year.

In these Interim Consolidated Financial Statements, unless otherwise indicated, all amounts are expressed in United States dollars ("U.S. dollars" or "$"). The symbol "€" refers to euros and the symbol "C$" refers to Canadian dollars.

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.

Impact of the COVID-19 Pandemic

The Company is subject to risks and uncertainties as a result of the COVID-19 pandemic. Recently many countries eased restrictions on economic and social activities to, among other things, reopen their economies by allowing businesses to restart and encourage economic recovery. The impact of the eased restrictions on the COVID-19 virus infection rate and the possible re-imposition of some restrictions on social, business and other activities is uncertain at this time.

The severity of the impact of the COVID-19 pandemic on the Company's business will depend on a number of factors, including, but not limited to, the duration and severity of the pandemic and the extent and severity of the impact on the Company's customers, all of which are uncertain and cannot be predicted. The Company's future results of operations and liquidity could be adversely impacted by delays in payments of outstanding receivable amounts beyond normal payment terms, supply chain disruptions and uncertain demand, and the impact of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by its customers.

Note 1. The Company and Summary of Significant Accounting Policies (continued)

As of the date of issuance of these Interim Consolidated Financial Statements, the Company has not had significant credit losses, downtime or closures at its mills or disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic, but the extent to which the COVID-19 pandemic may materially impact the Company's future financial condition, liquidity, or results of operations remains uncertain.

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Inventories

6 Months Ended

Jun. 30, 2021

Inventory Net [Abstract]

Inventories

Note 2. Inventories

Inventories as of June 30, 2021 and December 31, 2020, were comprised of the following:

	June 30,		December 31,
	2021		2020
Raw materials	$	107,150	$	74,526
Finished goods		98,413		88,256
Spare parts and other		107,791		108,914
	$	313,354	$	271,696

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Accounts Payable and Other

6 Months Ended

Jun. 30, 2021

Payables And Accruals [Abstract]

Accounts Payable and Other

Note 3. Accounts Payable and Other

Accounts payable and other as of June 30, 2021 and December 31, 2020, was comprised of the following:

	June 30,		December 31,
	2021		2020
Trade payables	$	67,679	$	42,730
Accrued expenses		109,142		90,875
Interest payable		27,289		33,241
Income tax payable		21,319		23,256
Government grants (a)		9,105		7,161
Insurance proceeds (a)		6,941		3,369
Other		22,984		10,362
	$	264,459	$	210,994

(a) The Canadian mills have a liability for unspent government grants which will be used to partially finance innovation and greenhouse gas emission reduction capital projects. The Peace River mill has a liability for unspent insurance proceeds which will be used to finance the rebuild of the recovery boiler. The grants and insurance proceeds are recorded in “Cash and cash equivalents” in the Interim Consolidated Balance Sheets, however, they are considered to be restricted as they are repayable if the mills do not spend the funds on approved projects.

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Debt

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Debt

Note 4. Debt

Debt as of June 30, 2021 and December 31, 2020, was comprised of the following:

		June 30,			December 31,
	Maturity	2021			2020
Senior notes (a)
5.500% senior notes	2026	$	300,000		$	300,000
5.125% senior notes	2029		875,000			—
6.500% senior notes	2024		—			250,000
7.375% senior notes	2025		—			550,000
Credit arrangements
€200 million joint revolving credit facility (b)	2023		—			—
C$60 million revolving credit facility (c)	2024		—			21,992
C$60 million revolving credit facility (d)	2023		—			32,988
€2.6 million demand loan (e)			—			—
			1,175,000			1,154,980
Less: unamortized premium and issuance costs, net			(17,127	)		(9,686	)
		$	1,157,873		$	1,145,294

The maturities of the principal portion of debt as of June 30, 2021 were as follows:

2021	$	—
2022		—
2023		—
2024		—
2025		—
Thereafter		1,175,000
	$	1,175,000

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 June 30, 2021, the Company was in compliance with the terms of its debt agreements.

(a) In January 2021, the Company issued $875,000 in aggregate principal amount of 5.125% senior notes which mature on February 1, 2029 (the “2029 Senior Notes”). The net proceeds from the 2029 Senior Notes issuance were $860,586 after deducting the underwriter’s discount and offering expenses. The net proceeds were used to redeem the outstanding senior notes which were to mature in 2024 and 2025 and for general corporate purposes. In connection with the redemption, the Company recorded a loss on early extinguishment of debt of $30,368 in the Interim Consolidated Statements of Operations.

The 2029 Senior Notes and the senior notes which mature on January 15, 2026 (the “2026 Senior Notes” and collectively with the 2029 Senior Notes, the “Senior Notes”) are general unsecured senior obligations of the Company. The Company may redeem all or a part of the Senior Notes, upon not less than 10 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date.

Note 4. Debt (continued)

The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes:

2026 Senior Notes		2029 Senior Notes
12 Month Period Beginning	Percentage	12 Month Period Beginning	Percentage
January 15, 2021	102.750%	February 1, 2024	102.563%
January 15, 2022	101.375%	February 1, 2025	101.281%
January 15, 2023 and thereafter	100.000%	February 1, 2026 and thereafter	100.000%

(b) A €200.0 million joint revolving credit facility with all of the Company's German mills that matures in December 2023. Borrowings under the facility are unsecured and bear interest at Euribor plus a variable margin ranging from 1.05% to 2.00% dependent on conditions including but not limited to a prescribed leverage ratio. As of June 30, 2021, approximately €9.9 million ($11,720) of this facility was supporting bank guarantees and approximately €190.1 million ($225,960) was available.

(c) A C$60.0 million revolving credit facility for Peace River that matures in February 2024. The facility is available by way of: (i) Canadian dollar denominated advances, which bear interest at a designated prime rate per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.50% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, a designated LIBOR rate plus 1.00% and the bank's applicable reference rate for U.S. dollar loans; and (iv) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.50% per annum. Borrowings under the facility are collateralized by, among other things, the mill's inventories and accounts receivable. As of June 30, 2021, approximately C$0.9 million ($738) was supporting letters of credit and approximately C$45.1 million ($36,391) was available.

(d) A C$60.0 million revolving credit facility for Celgar that matures in July 2023. Borrowings under the facility are collateralized by the mill's inventories, accounts receivable, general intangibles and capital assets and are restricted by a borrowing base calculated on the mill's inventories and accounts receivable. The facility is available by way of: (i) Canadian and U.S. dollar denominated advances, which bear interest at a designated prime rate less 0.125% to plus 0.125% per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.625% per annum; and (iii) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.625% per annum. As of June 30, 2021, approximately C$0.5 million ($364) was supporting letters of credit and approximately C$59.5 million ($48,046) was available.

(e) A €2.6 million demand loan for Rosenthal that does not have a maturity date. Borrowings under this facility are unsecured and bear interest at the rate of the three-month Euribor plus 2.50%. As of June 30, 2021, approximately €2.6 million ($3,033) of this facility was supporting bank guarantees and approximately $nil was available.

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Pension and Other Post-Retirement Benefit Obligations

6 Months Ended

Jun. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Pension and Other Post-Retirement Benefit Obligations

Note 5. 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. The components of the net benefit costs for the Celgar and Peace River defined benefit plans, in aggregate for the three and six month periods ended June 30, 2021 and 2020 were as follows:

	Three Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	956		$	73		$	824		$	63
Interest cost		854			94			814			93
Expected return on plan assets		(1,095	)		—			(1,072	)		—
Amortization of unrecognized items		165			(191	)		233			(216	)
Net benefit costs	$	880		$	(24	)	$	799		$	(60	)

	Six Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	1,981		$	152		$	1,673		$	127
Interest cost		1,771			196			1,654			189
Expected return on plan assets		(2,269	)		—			(2,165	)		—
Amortization of unrecognized items		341			(397	)		461			(438	)
Net benefit costs	$	1,824		$	(49	)	$	1,623		$	(122	)

The components of the net benefit costs other than service cost are recorded in "Other income (expenses)" in the Interim Consolidated Statements of Operations. The amortization of unrecognized items relates to net actuarial losses and prior service costs.

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 three and six month periods ended June 30, 2021, the Company made contributions of $315 and $695, respectively to this plan (2020 – $58 and $471).

Multiemployer Plan

The Company participates in a multiemployer plan for the hourly-paid employees at the Celgar mill. The contributions to the plan are determined based on a percentage of pensionable earnings pursuant to a collective bargaining agreement. The Company has no current or future contribution obligations in excess of the contractual contributions. During the three and six month periods ended June 30, 2021, the Company made contributions of $610 and $1,324, respectively to this plan (2020 – $555 and $1,006).

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Income Taxes

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Note 6. Income Taxes

Differences between the U.S. Federal statutory and the Company's effective tax rates for the three and six month periods ended June 30, 2021 and 2020, were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
U.S. Federal statutory rate	21%			21%			21%			21%
U.S. Federal statutory rate on income (loss) before income taxes	$	(6,741	)	$	1,581		$	(8,554	)	$	1,171
Tax differential on foreign income		(6,532	)		(662	)		(9,380	)		(1,881	)
Effect of foreign earnings (a)		(3,508	)		(1,295	)		(6,620	)		(2,870	)
Valuation allowance (b)		165			(3,169	)		(10,952	)		(3,165	)
Tax benefit of partnership structure		673			935			1,566			1,870
Non-taxable foreign subsidies		743			678			1,491			1,364
True-up of prior year taxes		(46	)		1,068			3,124			(154	)
Annual effective tax rate adjustment		4,700			—			18,000			—
Other, net		(139	)		(18	)		(2,058	)		(2,561	)
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)
Comprised of:
Current income tax provision	$	(9,409	)	$	(5,626	)	$	(10,903	)	$	(12,301	)
Deferred income tax recovery (provision)		(1,276	)		4,744			(2,480	)		6,075
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)

(a) Primarily due to the impact of the global intangible low-taxed income provision in the Tax Cuts and Jobs Act of 2017.

(b) For the three and six month periods ended June 30, 2021, the valuation allowance primarily relates to taxable losses and denied interest expense.

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Shareholders' Equity

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Shareholders' Equity

Note 7. Shareholders' Equity

Dividends

During the six month period ended June 30, 2021, the Company's board of directors declared the following quarterly dividends:

Date Declared	Dividend Per Common Share		Amount
February 16, 2021	$	0.0650	$	4,289
April 29, 2021		0.0650		4,293
	$	0.1300	$	8,582

In July 2021, the Company's board of directors declared a quarterly dividend of $0.065 per common share. Payment of the dividend will be made on October 6, 2021 to all shareholders of record on September 29, 2021. Future dividends are subject to approval by the board of directors and may be adjusted as business and industry conditions warrant.

Note 7. Shareholders' Equity (continued)

Stock Based Compensation

The Company has a stock incentive plan which provides for options, restricted stock rights, restricted shares, performance shares, performance share units ("PSUs") and stock appreciation rights to be awarded to employees, consultants and non-employee directors. During the three and six month periods ended June 30, 2021, there were no issued and outstanding options, restricted stock rights, performance shares or stock appreciation rights. As of June 30, 2021, after factoring in all allocated shares, there remain approximately 1.2 million common shares available for grant.

PSUs

PSUs comprise rights to receive common shares at a future date that are contingent on the Company and the grantee achieving certain performance objectives. The performance objective period is generally three years. For the three and six month periods ended June 30, 2021, the Company recognized an expense of $822 and $1,295, respectively related to PSUs (2020 – a reversal of $154 and $313).

The following table summarizes PSU activity during the period:

	Number of PSUs
Outstanding as of January 1, 2021		2,364,848
Granted		1,007,912
Vested and issued		(120,271	)
Forfeited		(498,017	)
Outstanding as of June 30, 2021		2,754,472

Restricted Shares

Restricted shares generally vest at the end of one year. For the three and six month periods ended June 30, 2021, the Company recognized an expense of $153 and $290, respectively related to restricted shares (2020 - $120 and $233). As of June 30, 2021, the total remaining unrecognized compensation cost related to restricted shares amounted to approximately $669 which will be amortized over the remaining vesting periods.

The following table summarizes restricted share activity during the period:

	Number of Restricted Shares
Outstanding as of January 1, 2021		68,140
Granted		49,195
Vested		(68,140	)
Outstanding as of June 30, 2021		49,195

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Net Income (Loss) Per Common Share

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share

Note 8. Net Income (Loss) Per Common Share

The reconciliation of basic and diluted net income (loss) per common share for the three and six month periods ended June 30, 2021 and 2020 was as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2021		2020			2021		2020
Net income (loss)
Basic and diluted	$	21,415	$	(8,411	)	$	27,348	$	(11,803	)
Net income (loss) per common share
Basic and diluted	$	0.32	$	(0.13	)	$	0.41	$	(0.18	)
Weighted average number of common shares outstanding:
Basic (a)		65,941,932		65,778,894			65,899,904		65,736,677
Effect of dilutive instruments:
PSUs		352,170		—			318,770		—
Restricted shares		38,581		—			47,342		—
Diluted		66,332,683		65,778,894			66,266,016		65,736,677

(a) For the three and six month periods ended June 30, 2021, the basic weighted average number of common shares outstanding excludes 49,195 restricted shares which have been issued, but have not vested as of June 30, 2021 (2020 – 68,140 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 three and six month periods ended June 30, 2021 and 2020 were as follows:  

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
PSUs		—		2,391,082		—		2,391,082
Restricted shares		—		68,140		—		68,140

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Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2021

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Accumulated Other Comprehensive Loss

Note 9. Accumulated Other Comprehensive Loss

The change in the accumulated other comprehensive loss by component (net of tax) for the six month period ended June 30, 2021 was as follows:

	Foreign Currency Translation Adjustment			Defined Benefit Pension and Other Post- Retirement Benefit Items			Total
Balance as of January 1, 2021	$	(19,578	)	$	(7,997	)	$	(27,575	)
Other comprehensive income (loss) before reclassifications		(17,566	)		378			(17,188	)
Amounts reclassified		—			(56	)		(56	)
Other comprehensive income (loss), net of taxes		(17,566	)		322			(17,244	)
Balance as of June 30, 2021	$	(37,144	)	$	(7,675	)	$	(44,819	)

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Related Party Transactions

6 Months Ended

Jun. 30, 2021

Related Party Transactions [Abstract]

Related Party Transactions

Note 10. Related Party Transactions

The Company enters into related party transactions with its joint ventures. For the three and six month periods ended June 30, 2021, pulp purchases from the Company's 50% owned Cariboo mill, which are transacted at the Cariboo mill's cost, were $27,152 and $48,195, respectively (2020 – $13,942 and $33,536) and as of June 30, 2021 the Company had a receivable balance from the Cariboo mill of $2,791 (December 31, 2020 – $3,518). For the three and six month periods ended June 30, 2021, services from the Company's 50% owned logging and chipping operation, which are transacted at arm's length negotiated prices, were $610 and $5,234, respectively (2020 – $1,735 and $8,278) and as of June 30, 2021 the Company had a payable balance to the operation of $2,172 (December 31, 2020 – $1,953).  

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Segment Information

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Segment Information

Note 11. 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 Cariboo mill are aggregated into the pulp segment, and the Friesau sawmill is a separate reportable 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 reportable segment.

None of the income or loss items following operating income in the Company's Interim Consolidated Statements of Operations are allocated to the segments, as those items are reviewed separately by management.

Information about certain segment data for the three and six month periods ended June 30, 2021 and 2020, was as follows:

Three Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	310,249	$	90,439	$	1,144		$	401,832
Operating income (loss)	$	13,338	$	42,314	$	(3,816	)	$	51,836
Depreciation and amortization	$	27,967	$	3,748	$	240		$	31,955
Revenues by major products
Pulp	$	297,191	$	—	$	—		$	297,191
Lumber		—		86,285		—			86,285
Energy and chemicals		13,058		2,692		1,144			16,894
Wood residuals		—		1,462		—			1,462
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832
Revenues by geographical markets (a)
U.S.	$	34,406	$	53,610	$	547		$	88,563
Germany		101,095		17,422		—			118,517
China		68,008		469		—			68,477
Other countries		106,740		18,938		597			126,275
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832

(a) Sales are attributed to countries based on the ship-to location provided by the customer.

Note 11. Business Segment Information (continued)

Three Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	298,046	$	41,727	$	1,422		$	341,195
Operating income (loss)	$	8,110	$	4,327	$	(2,122	)	$	10,315
Depreciation and amortization	$	27,219	$	2,804	$	178		$	30,201
Revenues by major products
Pulp	$	276,919	$	—	$	—		$	276,919
Lumber		—		37,611		—			37,611
Energy and chemicals		21,127		2,629		1,422			25,178
Wood residuals		—		1,487		—			1,487
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195
Revenues by geographical markets (a)
U.S.	$	39,651	$	17,622	$	575		$	57,848
Germany		77,568		12,294		—			89,862
China		78,814		—		—			78,814
Other countries		102,013		11,811		847			114,671
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195

(a) Sales are attributed to countries based on the ship-to location provided by the customer.    

Six Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	650,005	$	161,426	$	3,121		$	814,552
Operating income (loss)	$	38,634	$	70,291	$	(6,060	)	$	102,865
Depreciation and amortization	$	55,013	$	7,471	$	438		$	62,922
Total assets (a)	$	1,778,079	$	249,205	$	187,414		$	2,214,698
Revenues by major products
Pulp	$	614,773	$	—	$	—		$	614,773
Lumber		—		153,596		—			153,596
Energy and chemicals		35,232		4,806		3,121			43,159
Wood residuals		—		3,024		—			3,024
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552
Revenues by geographical markets (b)
U.S.	$	80,278	$	98,702	$	1,306		$	180,286
Germany		193,632		29,539		—			223,171
China		163,543		846		—			164,389
Other countries		212,552		32,339		1,815			246,706
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552

(a) Total assets for the pulp segment includes the Company's $45,844 investment in joint ventures, primarily for the Cariboo mill.

(b) Sales are attributed to countries based on the ship-to location provided by the customer.      

Note 11. Business Segment Information (continued)

Six Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	601,651	$	87,505	$	2,638		$	691,794
Operating income (loss)	$	29,549	$	9,882	$	(5,054	)	$	34,377
Depreciation and amortization	$	57,590	$	5,181	$	376		$	63,147
Revenues by major products
Pulp	$	555,867	$	—	$	—		$	555,867
Lumber		—		78,597		—			78,597
Energy and chemicals		45,784		5,260		2,638			53,682
Wood residuals		—		3,648		—			3,648
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794
Revenues by geographical markets (a)
U.S.	$	73,518	$	35,244	$	1,161		$	109,923
Germany		167,240		27,197		—			194,437
China		164,362		—		—			164,362
Other countries		196,531		25,064		1,477			223,072
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794

(a) Sales are attributed to countries based on the ship-to location provided by the customer.      

As of December 31, 2020, the Company had total assets of $1,740,233 in the pulp segment, $112,267 in the wood products segment and $276,626 in corporate and other. Total assets for the pulp segment includes the Company's $46,429 investment in joint ventures, primarily for the Cariboo mill.

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 three and six month periods ended June 30, 2021, the pulp segment sold $52 and $151, respectively of residual fuel to the wood products segment (2020 – $164 and $346) and the wood products segment sold $2,901 and $5,833, respectively of residual fiber to the pulp segment (2020 – $3,594 and $7,430).

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Financial Instruments and Fair Value Measurement

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Financial Instruments and Fair Value Measurement

Note 12. 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 June 30, 2021 and December 31, 2020 were as follows:

	Fair value measurements as of June 30, 2021 using:
Description	Level 1		Level 2		Level 3		Total
Senior notes	$	—	$	1,208,622	$	—	$	1,208,622

	Fair value measurements as of December 31, 2020 using:
Description	Level 1		Level 2		Level 3		Total
Revolving credit facilities	$	—	$	54,980	$	—	$	54,980
Senior notes		—		1,131,229		—		1,131,229
	$	—	$	1,186,209	$	—	$	1,186,209

The carrying value of the revolving credit facilities classified as Level 2 approximates the fair value as the variable interest rates reflect current interest rates for financial instruments with similar characteristics and maturities.

The fair value of the senior notes classified as Level 2 was determined using quoted prices in a dealer market, or using recent market transactions. The Company's senior notes are not carried at fair value in the Interim Consolidated Balance Sheets as of June 30, 2021 or December 31, 2020. However, fair value disclosure is required. The carrying value of the Company's senior notes, net of note issuance costs and premium is $1,157,873 as of June 30, 2021 (December 31, 2020 – $1,090,314).

Credit Risk

The Company's credit risk is primarily attributable to cash held in bank accounts and accounts receivable. The Company maintains cash balances in foreign financial institutions in excess of insured limits. The Company limits its credit exposure on cash held in bank accounts by periodically investing cash in excess of short-term operating requirements and debt obligations in low risk government bonds, or similar debt instruments. The Company's credit risk associated with the sale of pulp, lumber and other wood residuals is managed through setting credit limits, the purchase of credit insurance and for certain customers a letter of credit is received prior to shipping the product. The Company reviews new customers' credit history before granting credit and conducts regular reviews of existing customers' credit performance. Concentrations of credit risk on the sale of pulp, lumber and other wood residuals are with customers and agents based primarily in Germany, China and the U.S.

The Company's exposure to credit losses may increase if its customers are adversely affected by the COVID-19 pandemic. Although the Company has historically not experienced significant credit losses, it is possible that there could be a material adverse impact from potential adjustments of the carrying amount of trade receivables if the cash flows of the Company's customers are adversely impacted by the COVID-19 pandemic. As of June 30, 2021, the Company has not had significant credit losses due to the COVID-19 pandemic.

The carrying amount of cash and cash equivalents of $384,534 and accounts receivable of $225,238 recorded in the Interim Consolidated Balance Sheet, net of any allowances for losses, represents the Company's maximum exposure to credit risk.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 13. Commitments and Contingencies

(a) 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.

(b) 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.

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The Company and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Nature of Operations and Basis of Presentation

Nature of Operations and Basis of Presentation

The Interim Consolidated Financial Statements contained herein include the accounts of Mercer International Inc. ("Mercer Inc.") and all of its subsidiaries (collectively the "Company"). Mercer Inc. owns 100% of its subsidiaries with the exception of the 50% joint venture interest in the Cariboo mill with West Fraser Mills Ltd., which is accounted for using the equity method. The Company's shares of common stock are quoted and listed for trading on the NASDAQ Global Select Market.

The Interim Consolidated Financial Statements have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). The year-end Consolidated Balance Sheet data was derived from audited financial statements. The footnote disclosure included herein has been prepared in accordance with accounting principles generally accepted for interim financial statements in the United States ("GAAP"). The unaudited Interim Consolidated Financial Statements should be read together with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020. In the opinion of the Company, the unaudited Interim Consolidated Financial Statements contained herein have been prepared on a consistent basis with the audited Consolidated Financial Statements and accompanying notes included in the Company's latest Annual Report on Form 10‑K for the fiscal year ended December 31, 2020 and contain all adjustments necessary for a fair statement of the results of the interim periods included. The results for the periods included herein may not be indicative of the results for the entire year.

In these Interim Consolidated Financial Statements, unless otherwise indicated, all amounts are expressed in United States dollars ("U.S. dollars" or "$"). The symbol "€" refers to euros and the symbol "C$" refers to Canadian dollars.

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.

Impact of the COVID-19 Pandemic

Impact of the COVID-19 Pandemic

The Company is subject to risks and uncertainties as a result of the COVID-19 pandemic. Recently many countries eased restrictions on economic and social activities to, among other things, reopen their economies by allowing businesses to restart and encourage economic recovery. The impact of the eased restrictions on the COVID-19 virus infection rate and the possible re-imposition of some restrictions on social, business and other activities is uncertain at this time.

The severity of the impact of the COVID-19 pandemic on the Company's business will depend on a number of factors, including, but not limited to, the duration and severity of the pandemic and the extent and severity of the impact on the Company's customers, all of which are uncertain and cannot be predicted. The Company's future results of operations and liquidity could be adversely impacted by delays in payments of outstanding receivable amounts beyond normal payment terms, supply chain disruptions and uncertain demand, and the impact of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by its customers.

As of the date of issuance of these Interim Consolidated Financial Statements, the Company has not had significant credit losses, downtime or closures at its mills or disruptions to raw material supplies or access to logistics networks due to the COVID-19 pandemic, but the extent to which the COVID-19 pandemic may materially impact the Company's future financial condition, liquidity, or results of operations remains uncertain.

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Inventories (Tables)

6 Months Ended

Jun. 30, 2021

Inventory Net [Abstract]

Components of Inventories

Inventories as of June 30, 2021 and December 31, 2020, were comprised of the following:

	June 30,		December 31,
	2021		2020
Raw materials	$	107,150	$	74,526
Finished goods		98,413		88,256
Spare parts and other		107,791		108,914
	$	313,354	$	271,696

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Accounts Payable and Other (Tables)

6 Months Ended

Jun. 30, 2021

Payables And Accruals [Abstract]

Schedule of Accounts Payable and Other

Accounts payable and other as of June 30, 2021 and December 31, 2020, was comprised of the following:

	June 30,		December 31,
	2021		2020
Trade payables	$	67,679	$	42,730
Accrued expenses		109,142		90,875
Interest payable		27,289		33,241
Income tax payable		21,319		23,256
Government grants (a)		9,105		7,161
Insurance proceeds (a)		6,941		3,369
Other		22,984		10,362
	$	264,459	$	210,994

(a) The Canadian mills have a liability for unspent government grants which will be used to partially finance innovation and greenhouse gas emission reduction capital projects. The Peace River mill has a liability for unspent insurance proceeds which will be used to finance the rebuild of the recovery boiler. The grants and insurance proceeds are recorded in “Cash and cash equivalents” in the Interim Consolidated Balance Sheets, however, they are considered to be restricted as they are repayable if the mills do not spend the funds on approved projects.

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Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Schedule of Debt

Debt as of June 30, 2021 and December 31, 2020, was comprised of the following:

		June 30,			December 31,
	Maturity	2021			2020
Senior notes (a)
5.500% senior notes	2026	$	300,000		$	300,000
5.125% senior notes	2029		875,000			—
6.500% senior notes	2024		—			250,000
7.375% senior notes	2025		—			550,000
Credit arrangements
€200 million joint revolving credit facility (b)	2023		—			—
C$60 million revolving credit facility (c)	2024		—			21,992
C$60 million revolving credit facility (d)	2023		—			32,988
€2.6 million demand loan (e)			—			—
			1,175,000			1,154,980
Less: unamortized premium and issuance costs, net			(17,127	)		(9,686	)
		$	1,157,873		$	1,145,294

(a) In January 2021, the Company issued $875,000 in aggregate principal amount of 5.125% senior notes which mature on February 1, 2029 (the “2029 Senior Notes”). The net proceeds from the 2029 Senior Notes issuance were $860,586 after deducting the underwriter’s discount and offering expenses. The net proceeds were used to redeem the outstanding senior notes which were to mature in 2024 and 2025 and for general corporate purposes. In connection with the redemption, the Company recorded a loss on early extinguishment of debt of $30,368 in the Interim Consolidated Statements of Operations.

The 2029 Senior Notes and the senior notes which mature on January 15, 2026 (the “2026 Senior Notes” and collectively with the 2029 Senior Notes, the “Senior Notes”) are general unsecured senior obligations of the Company. The Company may redeem all or a part of the Senior Notes, upon not less than 10 days’ or more than 60 days’ notice at the redemption price plus accrued and unpaid interest to (but not including) the applicable redemption date.

Note 4. Debt (continued)

The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes:

2026 Senior Notes		2029 Senior Notes
12 Month Period Beginning	Percentage	12 Month Period Beginning	Percentage
January 15, 2021	102.750%	February 1, 2024	102.563%
January 15, 2022	101.375%	February 1, 2025	101.281%
January 15, 2023 and thereafter	100.000%	February 1, 2026 and thereafter	100.000%

(b) A €200.0 million joint revolving credit facility with all of the Company's German mills that matures in December 2023. Borrowings under the facility are unsecured and bear interest at Euribor plus a variable margin ranging from 1.05% to 2.00% dependent on conditions including but not limited to a prescribed leverage ratio. As of June 30, 2021, approximately €9.9 million ($11,720) of this facility was supporting bank guarantees and approximately €190.1 million ($225,960) was available.

(c) A C$60.0 million revolving credit facility for Peace River that matures in February 2024. The facility is available by way of: (i) Canadian dollar denominated advances, which bear interest at a designated prime rate per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.50% per annum; (iii) dollar denominated base rate advances at the greater of the federal funds rate plus 0.50%, a designated LIBOR rate plus 1.00% and the bank's applicable reference rate for U.S. dollar loans; and (iv) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.50% per annum. Borrowings under the facility are collateralized by, among other things, the mill's inventories and accounts receivable. As of June 30, 2021, approximately C$0.9 million ($738) was supporting letters of credit and approximately C$45.1 million ($36,391) was available.

(d) A C$60.0 million revolving credit facility for Celgar that matures in July 2023. Borrowings under the facility are collateralized by the mill's inventories, accounts receivable, general intangibles and capital assets and are restricted by a borrowing base calculated on the mill's inventories and accounts receivable. The facility is available by way of: (i) Canadian and U.S. dollar denominated advances, which bear interest at a designated prime rate less 0.125% to plus 0.125% per annum; (ii) banker's acceptance equivalent loans, which bear interest at the applicable Canadian dollar banker's acceptance plus 1.25% to 1.625% per annum; and (iii) dollar LIBOR advances, which bear interest at LIBOR plus 1.25% to 1.625% per annum. As of June 30, 2021, approximately C$0.5 million ($364) was supporting letters of credit and approximately C$59.5 million ($48,046) was available.

(e) A €2.6 million demand loan for Rosenthal that does not have a maturity date. Borrowings under this facility are unsecured and bear interest at the rate of the three-month Euribor plus 2.50%. As of June 30, 2021, approximately €2.6 million ($3,033) of this facility was supporting bank guarantees and approximately $nil was available.

Principal Maturities of Debt

The maturities of the principal portion of debt as of June 30, 2021 were as follows:

2021	$	—
2022		—
2023		—
2024		—
2025		—
Thereafter		1,175,000
	$	1,175,000

Debt Redemption Period for Outstanding Senior Notes

The following table presents the redemption prices (expressed as percentages of principal amount) and the redemption periods of the Senior Notes:

2026 Senior Notes		2029 Senior Notes
12 Month Period Beginning	Percentage	12 Month Period Beginning	Percentage
January 15, 2021	102.750%	February 1, 2024	102.563%
January 15, 2022	101.375%	February 1, 2025	101.281%
January 15, 2023 and thereafter	100.000%	February 1, 2026 and thereafter	100.000%

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Pension And Other Post-Retirement Benefit Obligations (Tables)

6 Months Ended

Jun. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The components of the net benefit costs for the Celgar and Peace River defined benefit plans, in aggregate for the three and six month periods ended June 30, 2021 and 2020 were as follows:

	Three Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	956		$	73		$	824		$	63
Interest cost		854			94			814			93
Expected return on plan assets		(1,095	)		—			(1,072	)		—
Amortization of unrecognized items		165			(191	)		233			(216	)
Net benefit costs	$	880		$	(24	)	$	799		$	(60	)

	Six Months Ended June 30,
	2021						2020
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	1,981		$	152		$	1,673		$	127
Interest cost		1,771			196			1,654			189
Expected return on plan assets		(2,269	)		—			(2,165	)		—
Amortization of unrecognized items		341			(397	)		461			(438	)
Net benefit costs	$	1,824		$	(49	)	$	1,623		$	(122	)

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Income Taxes (Tables)

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Reconciliation of Effective Tax Rate

Differences between the U.S. Federal statutory and the Company's effective tax rates for the three and six month periods ended June 30, 2021 and 2020, were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
U.S. Federal statutory rate	21%			21%			21%			21%
U.S. Federal statutory rate on income (loss) before income taxes	$	(6,741	)	$	1,581		$	(8,554	)	$	1,171
Tax differential on foreign income		(6,532	)		(662	)		(9,380	)		(1,881	)
Effect of foreign earnings (a)		(3,508	)		(1,295	)		(6,620	)		(2,870	)
Valuation allowance (b)		165			(3,169	)		(10,952	)		(3,165	)
Tax benefit of partnership structure		673			935			1,566			1,870
Non-taxable foreign subsidies		743			678			1,491			1,364
True-up of prior year taxes		(46	)		1,068			3,124			(154	)
Annual effective tax rate adjustment		4,700			—			18,000			—
Other, net		(139	)		(18	)		(2,058	)		(2,561	)
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)
Comprised of:
Current income tax provision	$	(9,409	)	$	(5,626	)	$	(10,903	)	$	(12,301	)
Deferred income tax recovery (provision)		(1,276	)		4,744			(2,480	)		6,075
Income tax provision	$	(10,685	)	$	(882	)	$	(13,383	)	$	(6,226	)

(a) Primarily due to the impact of the global intangible low-taxed income provision in the Tax Cuts and Jobs Act of 2017.

(b) For the three and six month periods ended June 30, 2021, the valuation allowance primarily relates to taxable losses and denied interest expense.

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Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2021

Stockholders Equity [Line Items]

Summary of Dividends Declared

During the six month period ended June 30, 2021, the Company's board of directors declared the following quarterly dividends:

Date Declared	Dividend Per Common Share		Amount
February 16, 2021	$	0.0650	$	4,289
April 29, 2021		0.0650		4,293
	$	0.1300	$	8,582

Performance Share Units

Stockholders Equity [Line Items]

Summary of Share Activity

The following table summarizes PSU activity during the period:

	Number of PSUs
Outstanding as of January 1, 2021		2,364,848
Granted		1,007,912
Vested and issued		(120,271	)
Forfeited		(498,017	)
Outstanding as of June 30, 2021		2,754,472

Restricted Stock

Stockholders Equity [Line Items]

Summary of Share Activity

The following table summarizes restricted share activity during the period:

	Number of Restricted Shares
Outstanding as of January 1, 2021		68,140
Granted		49,195
Vested		(68,140	)
Outstanding as of June 30, 2021		49,195

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Net Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share

The reconciliation of basic and diluted net income (loss) per common share for the three and six month periods ended June 30, 2021 and 2020 was as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2021		2020			2021		2020
Net income (loss)
Basic and diluted	$	21,415	$	(8,411	)	$	27,348	$	(11,803	)
Net income (loss) per common share
Basic and diluted	$	0.32	$	(0.13	)	$	0.41	$	(0.18	)
Weighted average number of common shares outstanding:
Basic (a)		65,941,932		65,778,894			65,899,904		65,736,677
Effect of dilutive instruments:
PSUs		352,170		—			318,770		—
Restricted shares		38,581		—			47,342		—
Diluted		66,332,683		65,778,894			66,266,016		65,736,677

(a) For the three and six month periods ended June 30, 2021, the basic weighted average number of common shares outstanding excludes 49,195 restricted shares which have been issued, but have not vested as of June 30, 2021 (2020 – 68,140 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 three and six month periods ended June 30, 2021 and 2020 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
PSUs		—		2,391,082		—		2,391,082
Restricted shares		—		68,140		—		68,140

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Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2021

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Schedule of Change in Accumulated Other Comprehensive Loss by Components

The change in the accumulated other comprehensive loss by component (net of tax) for the six month period ended June 30, 2021 was as follows:

	Foreign Currency Translation Adjustment			Defined Benefit Pension and Other Post- Retirement Benefit Items			Total
Balance as of January 1, 2021	$	(19,578	)	$	(7,997	)	$	(27,575	)
Other comprehensive income (loss) before reclassifications		(17,566	)		378			(17,188	)
Amounts reclassified		—			(56	)		(56	)
Other comprehensive income (loss), net of taxes		(17,566	)		322			(17,244	)
Balance as of June 30, 2021	$	(37,144	)	$	(7,675	)	$	(44,819	)

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Information about certain segment data for the three and six month periods ended June 30, 2021 and 2020, was as follows:

Three Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	310,249	$	90,439	$	1,144		$	401,832
Operating income (loss)	$	13,338	$	42,314	$	(3,816	)	$	51,836
Depreciation and amortization	$	27,967	$	3,748	$	240		$	31,955
Revenues by major products
Pulp	$	297,191	$	—	$	—		$	297,191
Lumber		—		86,285		—			86,285
Energy and chemicals		13,058		2,692		1,144			16,894
Wood residuals		—		1,462		—			1,462
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832
Revenues by geographical markets (a)
U.S.	$	34,406	$	53,610	$	547		$	88,563
Germany		101,095		17,422		—			118,517
China		68,008		469		—			68,477
Other countries		106,740		18,938		597			126,275
Total revenues	$	310,249	$	90,439	$	1,144		$	401,832

(a) Sales are attributed to countries based on the ship-to location provided by the customer.

Note 11. Business Segment Information (continued)

Three Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	298,046	$	41,727	$	1,422		$	341,195
Operating income (loss)	$	8,110	$	4,327	$	(2,122	)	$	10,315
Depreciation and amortization	$	27,219	$	2,804	$	178		$	30,201
Revenues by major products
Pulp	$	276,919	$	—	$	—		$	276,919
Lumber		—		37,611		—			37,611
Energy and chemicals		21,127		2,629		1,422			25,178
Wood residuals		—		1,487		—			1,487
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195
Revenues by geographical markets (a)
U.S.	$	39,651	$	17,622	$	575		$	57,848
Germany		77,568		12,294		—			89,862
China		78,814		—		—			78,814
Other countries		102,013		11,811		847			114,671
Total revenues	$	298,046	$	41,727	$	1,422		$	341,195

(a) Sales are attributed to countries based on the ship-to location provided by the customer.    

Six Months Ended June 30, 2021	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	650,005	$	161,426	$	3,121		$	814,552
Operating income (loss)	$	38,634	$	70,291	$	(6,060	)	$	102,865
Depreciation and amortization	$	55,013	$	7,471	$	438		$	62,922
Total assets (a)	$	1,778,079	$	249,205	$	187,414		$	2,214,698
Revenues by major products
Pulp	$	614,773	$	—	$	—		$	614,773
Lumber		—		153,596		—			153,596
Energy and chemicals		35,232		4,806		3,121			43,159
Wood residuals		—		3,024		—			3,024
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552
Revenues by geographical markets (b)
U.S.	$	80,278	$	98,702	$	1,306		$	180,286
Germany		193,632		29,539		—			223,171
China		163,543		846		—			164,389
Other countries		212,552		32,339		1,815			246,706
Total revenues	$	650,005	$	161,426	$	3,121		$	814,552

(a) Total assets for the pulp segment includes the Company's $45,844 investment in joint ventures, primarily for the Cariboo mill.

(b) Sales are attributed to countries based on the ship-to location provided by the customer.      

Note 11. Business Segment Information (continued)

Six Months Ended June 30, 2020	Pulp		Wood Products		Corporate and Other			Consolidated
Revenues from external customers	$	601,651	$	87,505	$	2,638		$	691,794
Operating income (loss)	$	29,549	$	9,882	$	(5,054	)	$	34,377
Depreciation and amortization	$	57,590	$	5,181	$	376		$	63,147
Revenues by major products
Pulp	$	555,867	$	—	$	—		$	555,867
Lumber		—		78,597		—			78,597
Energy and chemicals		45,784		5,260		2,638			53,682
Wood residuals		—		3,648		—			3,648
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794
Revenues by geographical markets (a)
U.S.	$	73,518	$	35,244	$	1,161		$	109,923
Germany		167,240		27,197		—			194,437
China		164,362		—		—			164,362
Other countries		196,531		25,064		1,477			223,072
Total revenues	$	601,651	$	87,505	$	2,638		$	691,794

(a) Sales are attributed to countries based on the ship-to location provided by the customer.      

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Financial Instruments and Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Estimated Fair Values of the Outstanding Debt

The estimated fair values of the Company's outstanding debt under the fair value hierarchy as of June 30, 2021 and December 31, 2020 were as follows:

	Fair value measurements as of June 30, 2021 using:
Description	Level 1		Level 2		Level 3		Total
Senior notes	$	—	$	1,208,622	$	—	$	1,208,622

	Fair value measurements as of December 31, 2020 using:
Description	Level 1		Level 2		Level 3		Total
Revolving credit facilities	$	—	$	54,980	$	—	$	54,980
Senior notes		—		1,131,229		—		1,131,229
	$	—	$	1,186,209	$	—	$	1,186,209

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The Company and Summary of Significant Accounting Policies - Additional Information (Details)	Jun. 30, 2021
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage in subsidiaries	100.00%
MPR - Cariboo Mill
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	50.00%

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Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventory Net [Abstract]
Raw materials	$ 107,150	$ 74,526
Finished goods	98,413	88,256
Spare parts and other	107,791	108,914
Inventories	$ 313,354	$ 271,696

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Accounts Payable and Other - Schedule of Accounts Payable and Other (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Trade payables	$ 67,679	$ 42,730
Accrued expenses	109,142	90,875
Interest payable	27,289	33,241
Income tax payable	21,319	23,256
Government grants	9,105	7,161
Insurance proceeds	6,941	3,369
Other	22,984	10,362
Accounts payable and other	$ 264,459	$ 210,994

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Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,175,000	$ 1,154,980
Less: unamortized premium and issuance costs, net	(17,127)	(9,686)
Long-term debt, net	$ 1,157,873	1,145,294
5.500% Senior Notes
Debt Instrument [Line Items]
Maturity	2026
Long-term debt, gross	$ 300,000	300,000
5.125% Senior Notes
Debt Instrument [Line Items]
Maturity	2029
Long-term debt, gross	$ 875,000	0
6.500% Senior Notes
Debt Instrument [Line Items]
Maturity	2024
Long-term debt, gross	$ 0	250,000
7.375% Senior Notes
Debt Instrument [Line Items]
Maturity	2025
Long-term debt, gross	$ 0	550,000
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Maturity	2023
Long-term debt, gross	$ 0	0
Peace River Credit Facility - C$60 Million
Debt Instrument [Line Items]
Maturity	2024
Long-term debt, gross	$ 0	21,992
Celgar Credit Facility - C$60.0 Million
Debt Instrument [Line Items]
Maturity	2023
Long-term debt, gross	$ 0	32,988
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 0

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Debt - Schedule of Debt (Parenthetical) (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 EUR (€)	Jun. 30, 2021 CAD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Long-term Debt		$ 1,157,873,000		$ 1,157,873,000				$ 1,145,294,000
Loss on early extinguishment of debt		0	$ 0	$ (30,368,000)	$ 0
German Joint RCF - EUR 200 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €						€ 200,000,000
Debt, description of variable basis spread				Euribor
Debt, amount of debt supporting bank guarantees		11,720,000		$ 11,720,000		9,900,000
Line of credit facility, remaining borrowing capacity		225,960,000		$ 225,960,000		190,100,000
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%
Peace River Credit Facility - C$60 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity							$ 60,000,000
Line of credit facility, remaining borrowing capacity		36,391,000		$ 36,391,000			45,100,000
Line of credit, letters of credit outstanding, amount		738,000		$ 738,000			900,000
Peace River Credit Facility - C$60 Million | Canadian Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				designated prime rate
Peace River Credit Facility - C$60 Million | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, description of variable basis spread				banker's acceptance
Peace River 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%
Peace River 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%
Peace River 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
Peace River Credit Facility - C$60 Million | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				LIBOR
Peace River Credit Facility - C$60 Million | Minimum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread				1.25%
Peace River Credit Facility - C$60 Million | Minimum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				1.25%
Peace River Credit Facility - C$60 Million | Maximum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread				1.50%
Peace River Credit Facility - C$60 Million | Maximum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				1.50%
Celgar Credit Facility - C$60.0 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity							60,000,000
Line of credit facility, remaining borrowing capacity		48,046,000		$ 48,046,000			59,500,000
Line of credit, letters of credit outstanding, amount		364,000		$ 364,000			$ 500,000
Celgar Credit Facility - C$60.0 Million | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, description of variable basis spread				banker's acceptance
Celgar Credit Facility - C$60.0 Million | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				LIBOR
Celgar Credit Facility - C$60.0 Million | Canadian & US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, description of variable basis spread				designated prime rate
Celgar Credit Facility - C$60.0 Million | Minimum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread				1.25%
Celgar Credit Facility - C$60.0 Million | Minimum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				1.25%
Celgar Credit Facility - C$60.0 Million | Minimum | Canadian & US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				(0.125%)
Celgar Credit Facility - C$60.0 Million | Maximum | Canadian Dollar Borrowings Rate Option 1
Debt Instrument [Line Items]
Debt, variable basis spread				1.625%
Celgar Credit Facility - C$60.0 Million | Maximum | US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				1.625%
Celgar Credit Facility - C$60.0 Million | Maximum | Canadian & US Dollar Borrowings Rate Option 2
Debt Instrument [Line Items]
Debt, variable basis spread				0.125%
Rosenthal Credit Facility - EUR 2.6 Million
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity | €						2,600,000
Debt, description of variable basis spread				three-month Euribor
Debt, variable basis spread				2.50%
Debt, amount of debt supporting bank guarantees		3,033,000		$ 3,033,000		€ 2,600,000
Line of credit facility, remaining borrowing capacity		$ 0		$ 0
2029 Senior Notes
Debt Instrument [Line Items]
Debt, interest rate	5.125%
Debt, face amount	$ 875,000,000
Debt, maturity date	Feb. 01, 2029
Long-term Debt	$ 860,586,000
Loss on early extinguishment of debt	$ 30,368,000
2026 Senior Notes
Debt Instrument [Line Items]
Debt, maturity date				Jan. 15, 2026
2026 and 2029 Senior Notes | Minimum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				10 days
2026 and 2029 Senior Notes | Maximum
Debt Instrument [Line Items]
Senior Notes, redemption notice days				60 days
5.500% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate		5.50%		5.50%		5.50%	5.50%
5.125% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate		5.125%		5.125%		5.125%	5.125%
6.500% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate		6.50%		6.50%		6.50%	6.50%
7.375% Senior Notes
Debt Instrument [Line Items]
Debt, interest rate		7.375%		7.375%		7.375%	7.375%

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Debt - Principal Maturities of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Long-term Debt, Fiscal Year Maturity [Abstract]
2021	$ 0
2022	0
2023	0
2024	0
2025	0
Thereafter	1,175,000
Total debt	$ 1,175,000	$ 1,154,980

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Debt - Debt Redemption Period for Senior Notes (Details)	6 Months Ended
	Jun. 30, 2021
2026 Senior Notes | January 15, 2021
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.75%
2026 Senior Notes | January 15, 2022
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.375%
2026 Senior Notes | January 15, 2023 and thereafter
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
2029 Senior Notes | February 1, 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.563%
2029 Senior Notes | February 1, 2025
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.281%
2029 Senior Notes | February 1, 2026 and thereafter
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%

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Pension And Other Post-Retirement Benefit Obligations - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 956	$ 824	$ 1,981	$ 1,673
Interest cost	854	814	1,771	1,654
Expected return on plan assets	(1,095)	(1,072)	(2,269)	(2,165)
Amortization of unrecognized items	165	233	341	461
Net benefit costs	880	799	1,824	1,623
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	73	63	152	127
Interest cost	94	93	196	189
Expected return on plan assets	0	0	0	0
Amortization of unrecognized items	(191)	(216)	(397)	(438)
Net benefit costs	$ (24)	$ (60)	$ (49)	$ (122)

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Pension and Other Post-Retirement Benefit Obligations - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Defined contribution plan, employer discretionary contribution amount	$ 315	$ 58	$ 695	$ 471
Multiemployer plan, contributions by employer	$ 610	$ 555	$ 1,324	$ 1,006

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Income Taxes - Reconciliation Of Effective Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
U.S. Federal statutory rate	21.00%	21.00%	21.00%	21.00%
U.S. Federal statutory rate on income (loss) before income taxes	$ (6,741)	$ 1,581	$ (8,554)	$ 1,171
Tax differential on foreign income	(6,532)	(662)	(9,380)	(1,881)
Effect of foreign earnings	(3,508)	(1,295)	(6,620)	(2,870)
Valuation allowance	165	(3,169)	(10,952)	(3,165)
Tax benefit of partnership structure	673	935	1,566	1,870
Non-taxable foreign subsidies	743	678	1,491	1,364
True-up of prior year taxes	(46)	1,068	3,124	(154)
Annual effective tax rate adjustment	4,700		18,000
Other, net	(139)	(18)	(2,058)	(2,561)
Income tax provision	(10,685)	(882)	(13,383)	(6,226)
Current income tax provision	(9,409)	(5,626)	(10,903)	(12,301)
Deferred income tax recovery (provision)	$ (1,276)	$ 4,744	$ (2,480)	$ 6,075

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Shareholders' Equity - Summary of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Equity [Abstract]
Date Declared	Apr. 29, 2021	Feb. 16, 2021
Dividends declared per common share	$ 0.0650	$ 0.0650	$ 0.0650	$ 0.1300	$ 0.2025
Dividends, Common Stock, Cash	$ 4,293	$ 4,289	$ 4,282	$ 8,582	$ 13,329

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Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Jul. 29, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share		$ 0.0650	$ 0.0650	$ 0.0650	$ 0.1300	$ 0.2025
Common shares available for grant		1,200,000			1,200,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0			0
Shares outstanding		0			0
Restricted Stock Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0			0
Shares outstanding		0			0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0			0
Shares outstanding		0			0
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0			0
Shares outstanding		0			0
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted					1,007,912
Shares outstanding		2,754,472			2,754,472		2,364,848
Vesting period					3 years
Expense (reversal) recognized		$ 822		$ (154)	$ 1,295	$ (313)
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted					49,195
Shares outstanding		49,195			49,195		68,140
Vesting period					1 year
Expense (reversal) recognized		$ 153		$ 120	$ 290	$ 233
Unrecognized compensation cost		$ 669			$ 669
Dividend Declared | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share	$ 0.065
Dividends Payable, Date to be Paid	Oct. 06, 2021
Dividends Payable, Date of Record	Sep. 29, 2021

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Shareholders' Equity - Summary of Share Activity - PSU's (Details) - Performance Share Units	6 Months Ended
	Jun. 30, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	2,364,848
Granted	1,007,912
Vested and issued (in shares)	(120,271)
Forfeited (in shares)	(498,017)
Outstanding - Ending	2,754,472

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Shareholders' Equity - Summary of Share Activity - Restricted Shares (Details) - Restricted Stock	6 Months Ended
	Jun. 30, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Beginning	68,140
Granted	49,195
Vested	(68,140)
Outstanding - Ending	49,195

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Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Income Per Common Share Basic And Diluted [Line Items]
Net income (loss) - basic and diluted	$ 21,415	$ (8,411)	$ 27,348	$ (11,803)
Net income (loss) per common share, basic and diluted	$ 0.32	$ (0.13)	$ 0.41	$ (0.18)
Basic, Weighted average number of common shares outstanding	65,941,932	65,778,894	65,899,904	65,736,677
Diluted, Weighted average number of common shares outstanding	66,332,683	65,778,894	66,266,016	65,736,677
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)	352,170		318,770
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Effect of dilutive instruments (in shares)	38,581		47,342

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Net Income (Loss) Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share (Parenthetical) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Contingently issuable shares excluded from the basic weighted average shares outstanding	49,195	68,140	49,195	68,140

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Net Income (Loss) Per Common Share - Anti-Dilutive Instruments Excluded from Calculation of Net Income (Loss) Per Common Share (Details) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Performance Share Units
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per common share	2,391,082	2,391,082
Restricted Stock
Net Income Per Common Share Basic And Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per common share	68,140	68,140

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Accumulated Other Comprehensive Loss - Schedule of Change in Accumulated Other Comprehensive Loss by Components (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 567,638	$ 462,768	$ 601,027	$ 550,403
Other comprehensive income (loss), net of taxes	18,399	44,219	(17,244)	(30,769)
Balance	604,134	494,260	604,134	494,260
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(19,578)
Other comprehensive income (loss) before reclassifications			(17,566)
Amounts reclassified			0
Other comprehensive income (loss), net of taxes			(17,566)
Balance	(37,144)		(37,144)
Defined Benefit Pension and Other Post-Retirement Benefit Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(7,997)
Other comprehensive income (loss) before reclassifications			378
Amounts reclassified			(56)
Other comprehensive income (loss), net of taxes			322
Balance	(7,675)		(7,675)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(63,218)	(191,548)	(27,575)	(116,560)
Other comprehensive income (loss) before reclassifications			(17,188)
Amounts reclassified			(56)
Other comprehensive income (loss), net of taxes	18,399	44,219	(17,244)	(30,769)
Balance	$ (44,819)	$ (147,329)	$ (44,819)	$ (147,329)

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Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
MPR - Cariboo Mill
Related Party Transaction [Line Items]
Ownership percentage	50.00%		50.00%
Related party transaction, purchases from related party	$ 27,152	$ 13,942	$ 48,195	$ 33,536
Receivable balance from related party	$ 2,791		$ 2,791		$ 3,518
MPR - logging JV
Related Party Transaction [Line Items]
Ownership percentage	50.00%		50.00%
Related party transaction, purchases from related party	$ 610	$ 1,735	$ 5,234	$ 8,278
Accounts payable, related parties	$ 2,172		$ 2,172		$ 1,953

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Segment Information - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) mill	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) mill	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of pulp mills | mill	4		4
Assets	$ 2,214,698		$ 2,214,698		$ 2,129,126
Investment in joint ventures	45,844		45,844		46,429
Revenues	401,832	$ 341,195	814,552	$ 691,794
Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Assets	1,778,079		1,778,079		1,740,233
Revenues	310,249	298,046	650,005	601,651
Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Assets	249,205		249,205		112,267
Revenues	90,439	41,727	161,426	87,505
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Assets	187,414		187,414		$ 276,626
Revenues	1,144	1,422	3,121	2,638
Intersegment Eliminations | Market Pulp
Segment Reporting Information [Line Items]
Revenues	52	164	151	346
Intersegment Eliminations | Wood Products
Segment Reporting Information [Line Items]
Revenues	$ 2,901	$ 3,594	$ 5,833	$ 7,430
MPR - Cariboo Mill
Segment Reporting Information [Line Items]
Ownership percentage	50.00%		50.00%

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Segment Information - Schedule of Results by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 401,832	$ 341,195	$ 814,552	$ 691,794
Operating income (loss)	51,836	10,315	102,865	34,377
Depreciation and amortization	31,955	30,201	62,922	63,147
Total assets	2,214,698		2,214,698		$ 2,129,126
Pulp
Segment Reporting Information [Line Items]
Total revenues	297,191	276,919	614,773	555,867
Lumber
Segment Reporting Information [Line Items]
Total revenues	86,285	37,611	153,596	78,597
Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	16,894	25,178	43,159	53,682
Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	1,462	1,487	3,024	3,648
Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	310,249	298,046	650,005	601,651
Operating income (loss)	13,338	8,110	38,634	29,549
Depreciation and amortization	27,967	27,219	55,013	57,590
Total assets	1,778,079		1,778,079		1,740,233
Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	90,439	41,727	161,426	87,505
Operating income (loss)	42,314	4,327	70,291	9,882
Depreciation and amortization	3,748	2,804	7,471	5,181
Total assets	249,205		249,205		112,267
Operating Segments | Pulp | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	297,191	276,919	614,773	555,867
Operating Segments | Pulp | Wood Products
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Lumber | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Lumber | Wood Products
Segment Reporting Information [Line Items]
Total revenues	86,285	37,611	153,596	78,597
Operating Segments | Energy and Chemicals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	13,058	21,127	35,232	45,784
Operating Segments | Energy and Chemicals | Wood Products
Segment Reporting Information [Line Items]
Total revenues	2,692	2,629	4,806	5,260
Operating Segments | Wood Residuals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Wood Residuals | Wood Products
Segment Reporting Information [Line Items]
Total revenues	1,462	1,487	3,024	3,648
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	1,144	1,422	3,121	2,638
Operating income (loss)	(3,816)	(2,122)	(6,060)	(5,054)
Depreciation and amortization	240	178	438	376
Total assets	187,414		187,414		$ 276,626
Corporate, Non-Segment | Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Lumber
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	1,144	1,422	3,121	2,638
Corporate, Non-Segment | Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
United States
Segment Reporting Information [Line Items]
Total revenues	88,563	57,848	180,286	109,923
United States | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	34,406	39,651	80,278	73,518
United States | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	53,610	17,622	98,702	35,244
United States | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	547	575	1,306	1,161
Germany
Segment Reporting Information [Line Items]
Total revenues	118,517	89,862	223,171	194,437
Germany | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	101,095	77,568	193,632	167,240
Germany | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	17,422	12,294	29,539	27,197
Germany | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
China
Segment Reporting Information [Line Items]
Total revenues	68,477	78,814	164,389	164,362
China | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	68,008	78,814	163,543	164,362
China | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	469	0	846	0
China | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Other Countries
Segment Reporting Information [Line Items]
Total revenues	126,275	114,671	246,706	223,072
Other Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	106,740	102,013	212,552	196,531
Other Countries | Operating Segments | Wood Products
Segment Reporting Information [Line Items]
Total revenues	18,938	11,811	32,339	25,064
Other Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	$ 597	$ 847	$ 1,815	$ 1,477

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Segment Information - Schedule of Results by Segment (Parenthetical) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Investment in joint ventures	$ 45,844	$ 46,429

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Financial Instruments and Fair Value Measurement - Estimated Fair Values of Outstanding Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,186,209
Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		54,980
Senior notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,208,622	1,131,229
Fair Value, Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		0
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		1,186,209
Fair Value, Significant Other Observable Inputs (Level 2) | Revolving credit facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		54,980
Fair Value, Significant Other Observable Inputs (Level 2) | Senior notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	1,208,622	1,131,229
Fair Value, Significant unobservable inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		0
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

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Financial Instruments and Fair Value Measurement - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Accounts receivable	$ 225,238	$ 227,055
Cash and cash equivalents	384,534	361,098
Senior notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value of senior notes, net of note issuance costs and premium	$ 1,157,873	$ 1,090,314