Westport Fuel Systems (WPRT) 40-F 14 Mar 22 2021 FY Annual report (Canada) Financial data

Cover

Cover	12 Months Ended
	Dec. 31, 2021shares
Cover [Abstract]
Entity Registrant Name	WESTPORT FUEL SYSTEMS INC.
Entity Central Index Key	0001370416
Document Type	40-F
Document Period End Date	Dec. 31, 2021
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding	170,799,325
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	Vancouver, BC, Canada
Auditor Firm ID	85

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents (including restricted cash, note 3(c))	$ 124,892	$ 64,262
Accounts receivable (note 5)	101,508	90,467
Inventories (note 6)	83,128	51,402
Prepaid expenses	6,997	11,767
Assets held for sale (note 7)	22,039	10,866
Total current assets	338,564	228,764
Long-term investments (note 8)	3,824	3,088
Property, plant and equipment (note 9)	64,420	57,507
Operating lease right-of-use assets (note 13)	28,830	27,962
Intangible assets (note 10)	9,286	11,784
Deferred income tax assets (note 19(b))	11,653	2,140
Goodwill (note 11)	3,121	3,397
Other long-term assets	11,615	11,621
Total assets	471,313	346,263
Current liabilities:
Accounts payable and accrued liabilities (note 12)	99,238	84,599
Current portion of operating lease liabilities (note 13)	4,190	4,476
Short-term debt (note 14)	12,965	23,445
Current portion of long-term debt (note 15)	11,277	16,302
Current portion of long-term royalty payable (note 16)	5,200	7,451
Current portion of warranty liability (note 17)	13,577	10,749
Total current liabilities	146,447	147,022
Long-term operating lease liabilities (note 13)	24,362	23,486
Long-term debt (note 15)	45,125	45,651
Long-term royalty payable (note 16)	4,747	8,591
Warranty liability (note 17)	5,214	8,187
Deferred income tax liabilities (note 19(b))	3,392	3,250
Other long-term liabilities	5,607	6,017
Total liabilities	234,894	242,204
Share capital (note 18):
Unlimited common shares, no par value: 151,722,963 (2019 - 144,069,972) common shares issued and outstanding	1,242,006	1,115,092
Other equity instruments	8,412	7,671
Additional paid-in-capital	11,516	11,516
Accumulated deficit	(992,021)	(1,005,679)
Accumulated other comprehensive loss	(33,494)	(24,541)
Total shareholders' equity	236,419	104,059
Total liabilities and shareholders' equity	471,313	346,263
Commitments and contingencies (note 21)

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common shares par value (in dollars per share)	$ 0	$ 0
Preferred shares par value (in dollars per share)	$ 0	$ 0
Common shares, shares outstanding (in shares)	170,799,325	144,069,972
Common shares, shares issued (in shares)	170,799,325	144,069,972

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 312,412	$ 252,497
Cost of revenue and expenses:
Cost of revenue	264,260	212,953
Research and development	25,194	20,976
General and administrative	36,290	26,629
Sales and marketing	13,495	11,510
Foreign exchange gain	(1,984)	(4,300)
Depreciation and amortization (notes 9 and 10)	5,390	6,239
Gain on sale of assets	(146)	0
Impairment on long-lived assets, net (note 9)	459	479
Cost of revenue and expenses	342,958	274,486
Loss from operations	(30,546)	(21,989)
Income from investments accounted for by the equity method	33,741	24,047
Interest on long-term debt and accretion on royalty payable	(4,937)	(7,988)
Bargain purchase gain from acquisition	5,856	0
Interest and other income	1,413	2
Income (loss) before income taxes	5,527	(5,928)
Income tax expense (recovery) (note 19):
Current	2,172	2,438
Deferred	(10,303)	(1,007)
Income tax expense (recovery)	(8,131)	1,431
Net income (loss) for the year	13,658	(7,359)
Other comprehensive income (loss):
Cumulative translation adjustment	(8,953)	(651)
Comprehensive income (loss)	$ 4,705	$ (8,010)
Income (loss) per share:
Net income (loss) per share, basic (in dollars per share)	$ 0.09	$ (0.05)
Net income (loss) per share, diluted (in dollars per share)	$ 0.08	$ (0.05)
Weighted average common shares outstanding:
Basic (in shares)	160,232,742	137,092,854
Diluted (in shares)	162,099,175	137,092,854

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	At The Market Offering	Public Offering	Common stock	Common stockAt The Market Offering	Common stockPublic Offering	Other equity instruments	Additional paid in capital	Accumulated deficit	Accumulated other comprehensive income (loss)
Balance (in shares) at Dec. 31, 2019				136,416,981
Balance at Dec. 31, 2019	$ 89,359			$ 1,094,633			$ 6,857	$ 10,079	$ (998,320)	$ (23,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares on exercise of share units (in shares)				829,553
Issuance of common shares on exercise of share units	0			$ 1,433			(1,433)
Issuance of common shares on conversions of convertible debt (in shares)				3,607,468
Issuance of common shares on conversions of convertible debt	5,122			$ 5,122
Issuance of common shares on at-the-market public offering, net of costs incurred (in shares)				3,215,970
Issuance of common shares on at-the-market public offering, net of costs incurred	13,904			$ 13,904
Change in fair value of the embedded conversion feature on convertible debt	1,437							1,437
Stock-based compensation	2,247						2,247
Net income (loss) for the year	(7,359)								(7,359)
Other comprehensive income (loss)	$ (651)									(651)
Balance (in shares) at Dec. 31, 2020	144,069,972			144,069,972
Balance at Dec. 31, 2020	$ 104,059			$ 1,115,092			7,671	11,516	(1,005,679)	(24,541)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares on exercise of share units (in shares)				327,774
Issuance of common shares on exercise of share units	0			$ 1,001			(1,001)
Issuance of common shares on conversions of convertible debt (in shares)				3,651,867
Issuance of common shares on conversions of convertible debt	5,186			$ 5,186
Issuance of common shares on at-the-market public offering, net of costs incurred (in shares)					1,819,712	20,930,000
Issuance of common shares on at-the-market public offering, net of costs incurred	120,727	$ 12,806	$ 107,921		$ 12,806	$ 107,921
Stock-based compensation	1,742						1,742
Net income (loss) for the year	13,658								13,658
Other comprehensive income (loss)	$ (8,953)									(8,953)
Balance (in shares) at Dec. 31, 2021	170,799,325			170,799,325
Balance at Dec. 31, 2021	$ 236,419			$ 1,242,006			$ 8,412	$ 11,516	$ (992,021)	$ (33,494)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from (used in) operating activities:
Net income (loss) for the year	$ 13,658	$ (7,359)
Items not involving cash:
Depreciation and amortization	14,035	14,034
Stock-based compensation expense	1,911	2,368
Unrealized foreign exchange gain	(1,984)	(4,300)
Deferred income tax	(10,303)	(1,007)
Income from investments accounted for by the equity method	(33,741)	(24,047)
Interest on long-term debt and accretion of royalty payable	4,937	7,988
Impairment on long lived assets, net	459	479
Change in inventory write-downs to net realizable value (note 6)	914	507
Gain on sale of assets	(146)	0
Bargain purchase gain from acquisition	5,856	0
Change in bad debt expense	(326)	299
Net cash used before working capital changes	(16,442)	(11,038)
Changes in non-cash operating working capital:
Accounts receivable	(11,117)	(22,721)
Inventories	(31,744)	(3,225)
Prepaid expenses	3,964	(8,685)
Accounts payable and accrued liabilities	11,313	(420)
Warranty liability	233	10,940
Net cash used in operating activities	(43,793)	(35,149)
Cash flows from (used in) investing activities:
Purchase of property, plant and equipment	(14,158)	(7,123)
Acquisitions, net of acquired cash (note 5)	(5,948)	0
Proceeds on sale of assets	600	207
Dividends received from joint ventures	21,796	20,758
Net cash from investing activities	2,290	13,842
Cash flows from (used in) financing activities:
Drawings on operating lines of credit and long-term facilities	74,408	85,258
Repayment of operating lines of credit and long-term facilities	(82,958)	(53,523)
Proceeds from share issuance, net	120,727	13,904
Repayment of royalty payable	(7,451)	(5,948)
Net cash from financing activities	104,726	39,691
Effect of foreign exchange on cash and cash equivalents	(2,593)	(134)
Increase in cash and cash equivalents	60,630	18,250
Cash and cash equivalents, beginning of year (including restricted cash)	64,262	46,012
Cash and cash equivalents, end of year (including restricted cash)	124,892	64,262
Supplementary information:
Interest paid	3,916	4,699
Taxes paid, net of refunds	$ 3,106	$ 1,374

Company organization and operat

Company organization and operations	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company organization and operations	1. Company organization and operations: Westport Fuel Systems Inc. (the “Company”) was incorporated under the Business Corporations Act (Alberta) on March 20, 1995. The Company engineers, manufactures and supplies alternative fuel systems and components for use in transportation markets on a global basis. The Company's components and systems control the pressure and flow of gaseous alternative fuels, such as propane, natural gas, and hydrogen used in internal combustion engines and fuel cells.

Liquidity and impact of COVID-1

Liquidity and impact of COVID-19	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquidity and impact of COVID-19	2. Liquidity and impact of COVID-19: The COVID-19 pandemic has impacted the Company's business since March 2020 which led to temporary closure of production plants in Northern Italy in the first half of 2020. Since the second half of 2020, the Company's sales and customer demand have continued to recover and the Company's production plants have since remained open and have been in normal production operations during the full year of 2021. However, the COVID-19 related global supply chain disruptions and inflationary pressures with rising prices for natural gas and liquid petroleum gas are ongoing challenges. The Company is closely monitoring and making efforts to mitigate the impact on the business from COVID-19 and the related global supply chain shortages of semiconductors, raw materials and other parts. Like other automotive manufacturers or suppliers, the Company sources components globally and has been impacted along with its customers by global supply chain disruptions. At this time, management does not see a material impact to its business; however, the situation not yet stabilized and could become material in case of a prolonged supply chain disruption that results in production delays or end-customer demand declines. During the year, the Company raised $120,727 through equity offerings which strengthened the Company's liquidity position (Refer to note 18 in these consolidated financial statements for more details). Further, the Company restructured its existing non-revolving term facility and COVID-19 credit facility with Export Development Canada ("EDC") into a new 5-year $20,000 term loan. Besides these financing activities, the Company applies, when appropriate, for government wage-subsidy and other support programs in the countries where it operates. The Company has recorded $1,065 in the year ended December 31, 2021 ($6,093 in the year ended December 31, 2020), related to these programs. On February 7, 2022, the Company agreed to sell 100% of its shares in Cummins Westport Inc. ("CWI") to Cummins Inc. for proceeds of approximately $22,200, along with its interest in the intellectual property of CWI for proceeds of $20,000 (Refer to note 7 in these consolidated financial statements for more details). The Company believes that it has considered all possible impacts of known events arising from the COVID-19 pandemic in the preparation of the consolidated financial statements; however, changes in circumstances due to COVID-19 could impact management's judgments and estimates associated with the liquidity and impact of COVID-19 assessment and other critical accounting assessments. The Company continues to sustain operating losses and negative cash flows from operating activities. As at December 31, 2021, the Company has cash and cash equivalents of $124,892 and during the year ended December 31, 2021, the Company used cash in operating activities of $43,793. The ability to continue as a going concern beyond March 2023 will depend on the Company's ability to generate sufficient positive cash flows from operations specifically through profitable, sustainable growth of Westport's HPDI 2.0™ fuel systems business, and on the Company's ability to finance its long term strategic objectives and operations. Westport’s HPDI™ fuel system is designed to directly inject a fuel into the combustion chamber of an internal combustion engine.

Significant accounting policies

Significant accounting policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Significant accounting policies	3. Significant accounting policies: (a) Basis of presentation: The consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated on consolidation. These consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). (b) Foreign currency translation: The Company’s functional currency is the Canadian dollar and its reporting currency for its consolidated financial statement presentation is the United States dollar ("U.S. Dollar"). The functional currencies for the Company's subsidiaries include the following: U.S. dollar, Canadian dollar, Euro, Argentina Peso, Chinese Renminbi (“RMB”), Swedish Krona, Indian Rupee, and Polish Zloty. The Company translates assets and liabilities of non-U.S. dollar functional currency operations using the period end exchange rates, shareholders’ equity balances using the weighted average of historical exchange rates, and revenues and expenses using the monthly average rate for the period, with the resulting exchange differences recognized in other comprehensive income. Transactions that are denominated in currencies other than the functional currencies of the Company’s or its subsidiaries' operations are translated at the rates in effect on the date of the transaction. Foreign currency denominated monetary assets and liabilities are translated to the applicable functional currency at the exchange rates in effect on the balance sheet date. Non-monetary assets and liabilities are translated at the historical exchange rate. All foreign exchange gains and losses are recognized in the statement of operations, except for the translation gains and losses arising from available-for-sale instruments, which are recorded through other comprehensive income until realized through disposal or impairment. As at June 30, 2018, the Company concluded that Argentina's economy is highly inflationary. As a result, the Company has remeasured the financial statements of the Argentinian subsidiary in the Company's reporting currency beginning July 1, 2018. Except as otherwise noted, all amounts in these financial statements are presented in U.S. dollars. For the years presented, the Company used the following exchange rates: Year-end exchange rate as at: Average for the year ended: December 31, 2021 December 31, 2020 December 31, 2021 December 31, 2020 Canadian dollar 1.27 1.27 1.25 1.34 Euro 0.88 0.82 0.85 0.88 RMB 6.35 6.53 6.45 6.90 Polish Zloty 4.04 3.72 3.92 3.90 Swedish Krona 9.05 8.19 8.57 9.18 Indian Rupee 74.45 73.00 73.92 74.08 Argentina Peso 102.54 84.06 94.79 69.59 (c) Cash and cash equivalents (including restricted cash): Cash and cash equivalents include cash on hand, term deposits, banker acceptances and guaranteed investment certificates with maturities of ninety days or less when acquired. Cash equivalents are considered as held for trading and recorded at fair value with changes in fair value recognized in the consolidated statements of operations. Cash and cash equivalents at December 31, 2021 include restricted cash of $104 (2020 - $75). Restricted cash at December 31, 2021 and 2020 is related to cash used to secure a letter of credit. (d) Accounts receivable, net: The accounts receivable balance reflects invoiced and accrued revenue and is presented net of an allowance for credit losses. The Company expects the majority of its accounts receivable balances to continue to come from large customers as it supplies the majority of its products and services through a network of distributors and Original Equipment Manufacturers ("OEM") and provides Delayed OEM ("DOEM") services. The Company establishes current expected credit losses ("CECL") for pools of assets with similar risk characteristics by evaluating historical levels of credit losses, current economic conditions that may affect a customer's ability to pay, and creditworthiness of significant customers. When specific customers are identified as no longer sharing the same risk profile as their current pool, they are removed from the pool and evaluated separately. The Company, in the normal course of business, monitors the financial condition of its customers and reviews the credit history of each new customer. When the Company becomes aware of a specific customer's inability to meet its financial obligations to the Company (such as in the case of bankruptcy filings or material deterioration in the customer's operating results or financial position, and payment experiences), the Company records a specific credit loss provision to reduce the customer's related accounts receivable to its estimated net realizable value. If circumstances related to specific customers change, the Company's estimates of the recoverability of accounts receivable balances could be further adjusted. (e) Inventories: The Company’s inventories consist of the Company’s fuel system products (finished goods), work-in-progress, purchased parts and assembled parts. Inventories are recorded at the lower of cost and net realizable value. Cost is determined based on the lower of weighted average cost or first-in, first-out. The cost of fuel system product inventories, assembled parts and work-in-progress includes materials, labour and production overhead, including depreciation. The Company records inventory write-downs based on an analysis of excess and obsolete inventories determined primarily by future demand forecasts. In addition, the Company records a liability for firm, noncancellable, and unconditional purchase commitments with manufacturers for quantities in excess of the Company’s future demand forecast consistent with its valuation of excess and obsolete inventory. (f) Property, plant and equipment: Property, plant and equipment are stated at cost. Depreciation is provided for as follows: Assets Basis Rate Buildings Straight-line 10 years Computer equipment and software Straight-line 3 years Furniture and fixtures Straight-line 5 years Machinery and equipment Straight-line 5 - 10 years Leasehold improvements Straight-line Lease term Depreciation expense on machinery and equipment used in the production and manufacturing process is included in cost of revenue. All other depreciation is included in depreciation and amortization expense in the statement of operations and comprehensive loss. (g) Long-term investments: The Company accounts for investments in which it has significant influence, including variable interest entities ("VIEs") for which the Company is not the primary beneficiary, using the equity method of accounting. Under the equity method, the Company recognizes its share of income from equity accounted investees in the statement of operations with a corresponding increase in long-term investments. Any dividends paid or payable are credited against long-term investments. 3. Significant accounting policies (continued): (h) Financial liabilities: Accounts payable and accrued liabilities, short-term debt and long-term debt are measured at amortized cost. Transaction costs relating to long-term debt are netted against long-term debt and are amortized using the effective interest rate method. (i) Research and development costs: Research and development costs are expensed as incurred and are recorded net of funding received or receivable. (j) Intangible assets: Intangible assets consist primarily of the estimated value of intellectual property, trademarks, technology, customer contracts and non-compete agreements acquired through acquisitions. Intangible assets are amortized over their estimated useful lives, which range from 5 to 20 years. (k) Impairment of long-lived assets: The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. If such conditions exist, assets are considered impaired if the sum of the undiscounted expected future cash flows expected to result from the use and eventual disposition of an asset is less than its carrying amount. An impairment loss is measured at the amount by which the carrying amount of the asset exceeds its fair value. When quoted market prices are not available, the Company uses the expected future cash flows discounted at a rate commensurate with the risks associated with the recovery of the asset as an estimate of fair value. The Company has significant investments in property, plant and equipment used in its heavy-duty OEM business, relating to the HPDI 2.0 fuel systems that is in the early stages of commercialization, and, as a result, is currently generating losses. Based on the Company's current projections, meaningful increases in component sales, compared to 2021 levels, are expected, allowing the business to benefit from economies of scale and become profitable. If these assumptions are not realized, the Company may be required to record an impairment on these assets in future periods. (l) Goodwill: Goodwill is recorded at the time of purchase for the excess of the amount of the purchase price over the fair values of the identifiable assets acquired and liabilities assumed. Goodwill is not amortized and instead is tested at least annually for impairment, or more frequently when events or changes in circumstances indicate that goodwill might be impaired. This impairment test is performed annually at December 31. Future adverse changes in market conditions or poor operating results of underlying assets could result in an inability to recover the carrying value of the goodwill, thereby possibly requiring an impairment charge. (m) Warranty liability: (n) Revenue recognition: The Company generates revenues primarily from product sales. Product revenues are derived from standard product sales contracts and from long-term fixed price contracts. The Company recognizes revenue when a customer obtains control of the goods or services. Determining the timing of the transfer of control, at a point in time or over time, requires judgment. On standard product sales contracts, revenues are recognized when customers obtain control of the product, that is when transfer of title and risks and rewards of ownership of goods have passed and when obligation to pay is considered certain. Invoices are generated and revenue is recognized at that point in time. Provisions for warranties are made at the time of sale. Service revenue is recognized over time as performance obligations are satisfied. (o) Income taxes: The Company accounts for income taxes using the asset and liability method. Under this method, deferred income tax assets and liabilities are determined based on the temporary differences between the accounting basis and tax basis of the assets and liabilities and for loss carry-forwards, tax credits and other tax attributes, using the enacted tax rates in effect for the years in which the differences are expected to reverse. The effect of a change in tax rates on the deferred income tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company recognizes deferred income tax assets to the extent the assets are more-likely-than-not to be realized. In making such a determination the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If it is determined that, based on all available evidence, it is more-likely-than-not that some or all of the deferred income tax assets will not be realized, a valuation allowance is provided to reduce the deferred income tax assets. The Company uses a two-step process to recognize and measure the income tax benefit of uncertain tax positions taken or expected to be taken in a tax return. The tax benefit from an uncertain tax position is recognized if it is more-likely-than-not that the position will be sustained upon examination by a tax authority based solely on the technical merits of the position. A tax benefit that meets the more-likely-than-not recognition threshold is measured as the largest amount that is greater than 50% likely to be realized upon settlement with the tax authority. To the extent a full benefit is not expected to be realized, an income tax liability is established. Any change in judgment related to the expected resolution of an uncertain tax position is recognized in the year of such a change.

Business combinations

Business combinations	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Business combinations	4. Business combinations: Acquisition of Stako sp. z.o.o (“Stako”): On May 28, 2021, the Company entered into an agreement to acquire all of the issued and outstanding shares of Stako from Worthington Industries Inc. for a total purchase price of $7,130. The transaction was completed on May 30, 2021. Stako is a leading manufacturer of liquid petroleum gas fuel (“LPG”) storage, supplying the aftermarket and OEM market segments through a worldwide network of dealers. Stako’s current product range includes over 1,000 models of LPG storage tanks. Over the last 30 years, Stako has supplied tanks to leading automobile manufacturers worldwide. The business combination resulted in a bargain purchase transaction as the fair value of assets acquired and liabilities assumed exceeded the total of the transaction date fair value of consideration paid by $5,856. The Company was able to acquire Stako for less than its fair value due to the decision of the seller to divest their non-core LPG business. The following table summarizes the final allocation of the purchase price to the fair values of assets acquired and liabilities assumed at the date of the acquisition. Consideration allocated to: Cash and cash equivalents $ 1,180 Accounts receivable (1) 5,609 Inventory (2) 4,217 Property, plant and equipment (3) 6,435 Other assets 319 Accounts payable and accrued liabilities (4) (4,678) Deferred income tax liabilities (96) Total net identifiable assets $ 12,986 Bargain purchase gain (5,856) Total consideration $ 7,130 (1) The fair value of $5,609 of accounts receivable was based on the cash flows expected to be collectible. (2) The fair value of inventory of $4,217 assigned to inventory was based on estimated selling prices net of selling costs associated with finished goods, and replacement value for raw materials and unassembled components. (3) Property, plant and equipment of $6,435 was determined based on their estimated fair market values. (4) The fair value of $4,678 of accounts payable and accrued liabilities acquired was based on the expected amount to be paid. No contingent liabilities were identified subsequent to the acquisition date. 4. Business combinations (continued): Proforma Results The following unaudited supplemental proforma information presents the consolidated financial results as if the acquisition of Stako had occurred on January 1, 2020. This supplemental proforma information has been prepared for comparative purposes and does not purport to be indicative of what would have occurred had the acquisition been made on January 1, 2020, nor are they indicative of any future results. Included in revenue and net income for the year ended December 31, 2021 are $13,791 and $1,601 related to the operations of Stako, respectively. Years ended December 31 2021 2020 Revenue Revenue for the period $ 312,412 $ 252,497 Stako for the period (prior to acquisition) 10,217 19,263 Proforma revenue for the period $ 322,629 $ 271,760 Net income (loss) Net income (loss) for the period $ 13,658 $ (7,359) Stako for the period (prior to acquisition) 722 1,260 Proforma adjustments (1) (5,377) — Adjusted proforma net income (loss) for the period $ 9,003 $ (6,099) (1) Includes adjustment of the bargain purchase gain and transaction costs incurred for the acquisition during the year.

Accounts receivable

Accounts receivable	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Accounts receivable	5. Accounts receivable: December 31, 2021 December 31, 2020 Customer trade receivables $ 90,324 $ 80,972 Other receivables 14,504 14,967 Income tax receivable 872 52 Due from related parties (notes 7 and 20) 1,651 1,070 Allowance for credit losses (5,843) (6,594) $ 101,508 $ 90,467

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories	6. Inventories: December 31, 2021 December 31, 2020 Purchased parts and materials $ 62,896 $ 36,066 Work-in-process 3,681 3,203 Finished goods 16,551 12,133 $ 83,128 $ 51,402 During the year ended December 31, 2021, the Company recorded write-downs to net realizable value of approximately $914 (year ended December 31, 2020 - $507).

Assets held for sale

Assets held for sale	12 Months Ended
	Dec. 31, 2021
Long-term Investments [Abstract]
Assets held for sale	7. Assets held for sale: The Company, indirectly through one of its wholly-owned subsidiary, entered into a joint venture with Cummins Inc. ("Cummins") on March 7, 2001. On February 19, 2012, the joint venture agreement ("JVA") was amended and restated to provide for, among other things, clarification concerning the scope of products within CWI. In addition, the parties revised certain economic terms of the JVA. Prior to February 19, 2012, the Company and Cummins shared equally in the profits and losses of CWI. Under the amended JVA, profits and losses are shared equally up to an established revenue baseline, then any excess profit will be allocated 75% to the Company and 25% to Cummins. The joint venture term ended December 31, 2021 as per the terms of the joint venture agreement. The investment was presented as assets held for sale as at December 31, 2021, with the comparative period balance reclassified accordingly. On February 7, 2022, the Company agreed to sell 100% of its shares in CWI to Cummins for proceeds of approximately $22,200, with Cummins continuing to operate the business as the sole owner. As part of the agreement, Cummins also agreed to purchase the Company's interest in the intellectual property with proceeds to the Company of $20,000. The Company received proceeds of $31,445, net of a $10,800 holdback, after the closing date. The holdback will be retained by Cummins for a term of three years to satisfy any extended warranty obligations in excess of the current recorded extended warranty obligation. Any unused amounts will be repaid to the Company at the end of three-year term. The Company recognized its share of CWI’s income and received dividends as follows: Years ended December 31, 2021 2020 Investment income from CWI $ 32,969 $ 23,774 Dividends received 21,796 20,758 As at December 31, 2021, the Company has a related party accounts receivable balance of $58 (2020 - $74) due from CWI. During the year ended December 31, 2021, total expense recoveries from CWI were $791 (2020 - $1,611). The carrying amount and maximum exposure to losses relating to CWI were as follows: Balance at December 31, 2021 Balance at December 31, 2020 Carrying Maximum Carrying Maximum Equity method investment in CWI $ 22,039 $ 22,039 $ 10,866 $ 10,866 Accounts receivable due from CWI 58 58 74 74 Assets, liabilities, revenue and expenses of CWI, are as follows: December 31, 2021 December 31, 2020 Current assets: Cash and short-term investments $ 113,936 $ 94,984 Accounts receivable 9,999 5,681 Long-term assets: Property, plant and equipment 259 605 Deferred income tax assets 22,584 21,651 Total assets $ 146,778 $ 122,921 Current liabilities: Accounts payable and accrued liabilities $ 5,509 $ 5,557 Current portion of warranty liability 26,105 19,485 Current portion of deferred revenue 12,374 13,628 43,988 38,670 Long-term liabilities: Warranty liability 36,267 34,737 Deferred revenue 20,122 23,802 Other long-term liabilities 2,312 3,969 58,701 62,508 Total liabilities $ 102,689 $ 101,178 Years ended December 31, 2021 2020 Product revenue $ 252,135 $ 219,141 Parts revenue 115,371 104,339 367,506 323,480 Cost of revenue and expenses: Cost of product and parts revenue 268,440 236,154 Research and development 6,084 12,185 General and administrative 1,778 1,650 Sales and marketing 12,865 12,567 289,167 262,556 Income from operations 78,339 60,924 Interest and investment income 522 1,074 Income before income taxes 78,861 61,998 Income tax expense: Current 13,857 14,779 Deferred (933) (329) 12,924 14,450 Income for the year $ 65,937 $ 47,548 8. Long-term investments: December 31, 2021 December 31, 2020 Weichai Westport Inc. $ 1,824 $ 1,824 Minda Westport Technologies Limited 1,852 1,116 Other equity accounted investees 148 148 $ 3,824 $ 3,088 Weichai Westport Inc. ("WWI"): The Company, indirectly through its wholly-owned subsidiary, Westport Innovations (Hong Kong) Limited (“Westport HK”), is currently the registered holder of a 23.33% equity interest in WWI. In April 2016, the Company sold to Cartesian Capital Group (“Cartesian”) a derivative economic interest granting it the right to receive an amount of future income received by Westport HK from WWI equivalent to having an 18.78% equity interest in WWI and concurrently granted a Cartesian entity an option to acquire all of the equity securities of Westport HK for a nominal amount. The Company retained the right to transfer any equity interest held by Westport HK in WWI that was in excess of an 18.78% interest in the event that such option was exercised. As a result of such transactions, the Company’s residual 23.33% equity interest in WWI currently corresponds to an economic interest in WWI equivalent to just 4.55%. Cartesian had financing arrangements with the Company through convertible debt and a royalty payable described in notes 15(b) and 16. Various Cartesian entities are associated with these investments including Pangaea Two Management, LP; Pangaea Two Acquisition Holdings XIV, LLC, Pangaea Two Acquisition Holdings Parallel XIV, LLC. Collectively, these entities will be referred to as “Cartesian”.

Long-term investments

Long-term investments	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Long-term investments	7. Assets held for sale: The Company, indirectly through one of its wholly-owned subsidiary, entered into a joint venture with Cummins Inc. ("Cummins") on March 7, 2001. On February 19, 2012, the joint venture agreement ("JVA") was amended and restated to provide for, among other things, clarification concerning the scope of products within CWI. In addition, the parties revised certain economic terms of the JVA. Prior to February 19, 2012, the Company and Cummins shared equally in the profits and losses of CWI. Under the amended JVA, profits and losses are shared equally up to an established revenue baseline, then any excess profit will be allocated 75% to the Company and 25% to Cummins. The joint venture term ended December 31, 2021 as per the terms of the joint venture agreement. The investment was presented as assets held for sale as at December 31, 2021, with the comparative period balance reclassified accordingly. On February 7, 2022, the Company agreed to sell 100% of its shares in CWI to Cummins for proceeds of approximately $22,200, with Cummins continuing to operate the business as the sole owner. As part of the agreement, Cummins also agreed to purchase the Company's interest in the intellectual property with proceeds to the Company of $20,000. The Company received proceeds of $31,445, net of a $10,800 holdback, after the closing date. The holdback will be retained by Cummins for a term of three years to satisfy any extended warranty obligations in excess of the current recorded extended warranty obligation. Any unused amounts will be repaid to the Company at the end of three-year term. The Company recognized its share of CWI’s income and received dividends as follows: Years ended December 31, 2021 2020 Investment income from CWI $ 32,969 $ 23,774 Dividends received 21,796 20,758 As at December 31, 2021, the Company has a related party accounts receivable balance of $58 (2020 - $74) due from CWI. During the year ended December 31, 2021, total expense recoveries from CWI were $791 (2020 - $1,611). The carrying amount and maximum exposure to losses relating to CWI were as follows: Balance at December 31, 2021 Balance at December 31, 2020 Carrying Maximum Carrying Maximum Equity method investment in CWI $ 22,039 $ 22,039 $ 10,866 $ 10,866 Accounts receivable due from CWI 58 58 74 74 Assets, liabilities, revenue and expenses of CWI, are as follows: December 31, 2021 December 31, 2020 Current assets: Cash and short-term investments $ 113,936 $ 94,984 Accounts receivable 9,999 5,681 Long-term assets: Property, plant and equipment 259 605 Deferred income tax assets 22,584 21,651 Total assets $ 146,778 $ 122,921 Current liabilities: Accounts payable and accrued liabilities $ 5,509 $ 5,557 Current portion of warranty liability 26,105 19,485 Current portion of deferred revenue 12,374 13,628 43,988 38,670 Long-term liabilities: Warranty liability 36,267 34,737 Deferred revenue 20,122 23,802 Other long-term liabilities 2,312 3,969 58,701 62,508 Total liabilities $ 102,689 $ 101,178 Years ended December 31, 2021 2020 Product revenue $ 252,135 $ 219,141 Parts revenue 115,371 104,339 367,506 323,480 Cost of revenue and expenses: Cost of product and parts revenue 268,440 236,154 Research and development 6,084 12,185 General and administrative 1,778 1,650 Sales and marketing 12,865 12,567 289,167 262,556 Income from operations 78,339 60,924 Interest and investment income 522 1,074 Income before income taxes 78,861 61,998 Income tax expense: Current 13,857 14,779 Deferred (933) (329) 12,924 14,450 Income for the year $ 65,937 $ 47,548 8. Long-term investments: December 31, 2021 December 31, 2020 Weichai Westport Inc. $ 1,824 $ 1,824 Minda Westport Technologies Limited 1,852 1,116 Other equity accounted investees 148 148 $ 3,824 $ 3,088 Weichai Westport Inc. ("WWI"): The Company, indirectly through its wholly-owned subsidiary, Westport Innovations (Hong Kong) Limited (“Westport HK”), is currently the registered holder of a 23.33% equity interest in WWI. In April 2016, the Company sold to Cartesian Capital Group (“Cartesian”) a derivative economic interest granting it the right to receive an amount of future income received by Westport HK from WWI equivalent to having an 18.78% equity interest in WWI and concurrently granted a Cartesian entity an option to acquire all of the equity securities of Westport HK for a nominal amount. The Company retained the right to transfer any equity interest held by Westport HK in WWI that was in excess of an 18.78% interest in the event that such option was exercised. As a result of such transactions, the Company’s residual 23.33% equity interest in WWI currently corresponds to an economic interest in WWI equivalent to just 4.55%. Cartesian had financing arrangements with the Company through convertible debt and a royalty payable described in notes 15(b) and 16. Various Cartesian entities are associated with these investments including Pangaea Two Management, LP; Pangaea Two Acquisition Holdings XIV, LLC, Pangaea Two Acquisition Holdings Parallel XIV, LLC. Collectively, these entities will be referred to as “Cartesian”.

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, plant and equipment	9. Property, plant and equipment: Accumulated Net book December 31, 2021 Cost depreciation value Land and buildings $ 8,843 $ 1,883 $ 6,960 Computer equipment and software 7,965 6,054 1,911 Furniture and fixtures 6,223 5,149 1,074 Machinery and equipment 113,479 62,320 51,159 Leasehold improvements 13,502 10,186 3,316 $ 150,012 $ 85,592 $ 64,420 Accumulated Net book December 31, 2020 Cost depreciation value Land and buildings $ 5,303 $ 1,701 $ 3,602 Computer equipment and software 7,045 5,570 1,475 Furniture and fixtures 4,968 4,148 820 Machinery and equipment 102,834 54,387 48,447 Leasehold improvements 12,479 9,316 3,163 $ 132,629 $ 75,122 $ 57,507 From the acquisition of Stako in 2021, the Company had additions in land and buildings, furniture and fixtures, and machinery and equipment of $4,155, $75, and $2,205, respectively. During the year ended December 31, 2021, an impairment charge of $459 was recorded related to property, plant and equipment in Rohan BRC Gas Equipment Pvt. Ltd., one of the Company's subsidiaries in India (December 31, 2020 - $479). Total depreciation expense for the year ended December 31, 2021 was $12,437 (year ended December 31, 2020 - $12,288). The amount of depreciation expense included in cost of revenue for the year ended December 31, 2021 was $8,645 (year ended December 31, 2020 - $7,795).

Intangible assets

Intangible assets	12 Months Ended
	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible assets	10. Intangible assets: Accumulated Net book December 31, 2021 Cost amortization value Patents and trademarks $ 20,748 $ 11,823 $ 8,925 Technology 4,202 3,894 308 Customer contracts 11,954 11,901 53 Total $ 36,904 $ 27,618 $ 9,286 Accumulated Net book December 31, 2020 Cost amortization value Patents and trademarks $ 21,763 $ 11,513 $ 10,250 Technology 6,040 5,613 427 Customer contracts 13,234 12,283 951 Other intangibles 477 321 156 Total $ 41,514 $ 29,730 $ 11,784

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	11. Goodwill: A continuity of goodwill is as follows: December 31, 2021 December 31, 2020 Balance, beginning of year $ 3,397 $ 3,110 Impact of foreign exchange changes (276) 287 Balance, end of year $ 3,121 $ 3,397 Goodwill of $3,121 (December 31, 2020 - $3,397), relates to the acquisition of Prins Autogassystemen Holding B.V. in 2014. The Company completed its annual assessment of impairment and concluded that goodwill of $3,121 related to the IAM business segment was not impaired as at December 31, 2021.

Accounts payable and accrued li

Accounts payable and accrued liabilities	12 Months Ended
	Dec. 31, 2021
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts payable and accrued liabilities	12. Accounts payable and accrued liabilities: December 31, 2021 December 31, 2020 Trade accounts payable $ 73,388 $ 57,307 Accrued payroll 16,591 14,737 Accrued interest — 137 Taxes payable 4,621 3,905 Deferred revenue 3,503 8,008 Other payables 1,135 505 $ 99,238 $ 84,599

Operating leases right-of-use a

Operating leases right-of-use assets	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Operating leases right-of-use assets	13. Operating leases right-of-use assets: The Company has entered into various non-cancellable operating lease agreements primarily for its manufacturing facilities and offices. The Company's leases have lease terms expiring between 2021 and 2033. Many leases include one or more options to renew. The Company does not assume renewals in its determination of the lease term unless the renewals are deemed to be reasonably assured at lease commencement. The average remaining lease term is approximately five years and the present value of the outstanding operating lease liability was determined applying a weighted average discount rate of 3.0% based on incremental borrowing rates applicable in each location. The components of lease cost are as follows: Years ended December 31, 2021 2020 Operating lease cost: Amortization of right-of-use assets $ 3,620 $ 3,874 Interest 891 813 Total lease cost $ 4,511 $ 4,687 The maturities of lease liabilities as of December 31, 2021 are as follows: 2022 $ 4,190 2023 3,499 2024 3,088 2025 2,549 2026 2,048 Thereafter 17,449 Total undiscounted cash flows 32,823 Less: imputed interest (4,271) Present value of operating lease liabilities 28,552 Less: current portion (4,190) Long term operating lease liabilities $ 24,362

Short-term debt

Short-term debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Short-term debt	14. Short-term debt: December 31, 2021 December 31, 2020 Revolving financing facility (a) $ 12,965 $ 17,428 Credit facility (b) — 6,017 Balance, end of year $ 12,965 $ 23,445 (a) The Company has a revolving financing facility with HSBC. This facility is secured by certain receivables of the Company and the maximum draw amount is $20,000, based on the receivables outstanding. As the Company collects these secured receivables, the facility is repaid. The interest rate for this facility was the LIBOR rate plus 2.5%. On December 22, 2021, the Company and HSBC amended the revolving financing facility's advances denominated in U.S. Dollars' and Euros' interest rates to the secured overnight financing rate plus 2.66% per annum and Euro short-term rate plus 2.5%, respectively. (b) On July 23, 2020, the Company entered into a one

Long-term debt

Long-term debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Long-term debt	15. Long-term debt: December 31, 2021 December 31, 2020 Term loan facilities, net of debt issuance costs (a) $ 53,516 $ 53,731 Convertible debt (b) — 4,362 Other bank financing (c) 1,231 1,325 Capital lease obligations (d) 1,655 2,535 Balance, end of year 56,402 61,953 Current portion (11,277) (16,302) Long-term portion $ 45,125 $ 45,651 (a) On December 20, 2017, the Company entered into a loan agreement with EDC for a $20,000 non-revolving term facility. The Company incurred debt issuance costs of $1,013 related to this loan, which are being amortized over the loan term using the effective interest rate method. The loan bore interest at 6% (prior to March 1, 2019, 9% plus monitoring fees), payable quarterly, as well as quarterly principal repayments. On December 13, 2021, the credit facility and non-revolving term facility were refinanced to a $20,000 term loan. The refinanced term loan provides an extension of the maturity of the indebtedness to EDC to September 15, 2026 and reduced the interest rate to U.S. Prime rate plus 2.01% per annum. The Company incurred transaction costs of $300 related to this amendment, which are being amortized over the remainder of the loan term from the debt modification date using the effective interest rate method. As at December 31, 2021 the amount outstanding for this loan was $18,583, net of transaction costs, compared to $13,618, net of transaction costs, as at December 31, 2020. The loan is secured by share pledges over Westport Fuel Systems Canada Inc., Fuel Systems Solutions, Inc., Westport Luxembourg S.a.r.l and by certain of the Company's property, plant and equipment. 15. Long-term debt (continued): On October 9, 2018, and November 28, 2019, the Company entered into Euro denominated loan agreements with UniCredit S.p.A. ("UniCredit"). These loan bears interest at an annual rate of 2.3% and 1.8%, respectively, and interest is paid quarterly. The loans matures on December 31, 2023 and September 30, 2023, respectively. On April 29, 2021, the Company and UniCredit amended the terms of the above Euro denominated loan agreements to combine the facilities into one $8,803 loan facility. This loan matures on March 31, 2027, bears interest at an annual rate of 1.65% and interest is paid quarterly. The cash pledge is removed after the amendment. As at December 31, 2021, the amount outstanding for this loan was $8,470 compared to $7,246 as at December 31, 2020. On May 20, 2020, the Company entered into a third Euro denominated loan agreement with UniCredit. The effective interest rate of this loan is 1.82% with a maturity date of May 31, 2025. As at December 31, 2021, the amount outstanding for this loan was $4,000 compared to $5,558 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government's COVID-19 Decreto Liquidità to help Italian companies to secure liquidity to continue operating while mitigating some of the impact of COVID-19. On July 17, 2020, the Company entered into a fourth Euro denominated loan agreement with UniCredit. The effective interest rate of this loan is 1.75% with a maturity date of July 31, 2026. As at December 31, 2021, the amount outstanding for this loan was $15,335 compared to $18,650 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government’s COVID-19 Decreto Liquidità. On August 11, 2020, the Company entered into a Euro denominated loan agreement with Deutsche Bank. The effective interest rate of this loan is 1.7% with a maturity date of August 31, 2026. As at December 31, 2021, the amount outstanding for this loan was $7,128 compared to $8,659 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government’s COVID-19 Decreto Liquidità. (b) On January 11, 2016, the Company entered into a financing agreement ("Tranche 2 Financing") with Cartesian. As part of the agreement, on June 1, 2016, convertible debt was issued in exchange for 9.0% convertible unsecured notes due June 1, 2021, which are convertible into common shares of the Company in whole or in part, at Cartesian's option, at any time following the twelve month anniversary of the closing at a conversion price of $2.17 per share. Interest is payable annually in arrears on December 31 of each year during the term. On July 24, 2020, Westport restructured the Tranche 2 Financing agreement and entered into a new financing agreement with Cartesian. Under the terms of the agreement, the Company agreed to pay down the principal amount of the existing convertible notes from $17,500 to $10,000. Concurrent with such repayment, the maturity of the remaining amended notes was extended three years to July 30, 2023, the coupon rate was reduced from 9.0% annually to 6.5% annually, and the conversion price was revised from $2.17 per share to $1.42 per share. During the fourth quarter of 2020, Cartesian exercised its option to convert principal amounts of $5,000, plus accrued but unpaid interest on such principal amounts, into common shares of the Company. On January 21, 2021, and August 31, 2021, respectively, Cartesian exercised its options to convert a principal amount of $2,500, plus accrued and unpaid interest on such principal amount, into 1,815,117 common shares of the Company and the final principal balance of $2,500, plus accrued and unpaid interest on such principal amount, into 1,836,750 common shares of the Company, respectively. As at December 31, 2021, the convertible note was fully repaid and converted into common shares of the Company. (c) Other bank financing consists of various secured and unsecured bank financing arrangements that carry rates of interest ranging from 0.75% to 3.8% and have various maturities out to 2025. Security includes a building owned by the Company in the Netherlands and certain accounts receivable. (d) The Company has capital lease obligations that have terms of two 15. Long-term debt (continued): Throughout the term of certain of these financing arrangements, the Company is required to meet certain financial and non-financial covenants. As of December 31, 2021, the Company is in compliance with all covenants under the financing arrangements. The principal repayment schedule of long-term debt is as follows as at December 31, 2021: Term loan facilities Other bank financing Capital lease obligations Total 2022 $ 10,057 $ 687 $ 517 $ 11,261 2023 11,582 — 460 12,042 2024 12,167 136 427 12,730 2025 11,609 136 228 11,973 2026 and thereafter 8,101 272 23 8,396 $ 53,516 $ 1,231 $ 1,655 $ 56,402

Long-term royalty payable

Long-term royalty payable	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Long-term royalty payable	16. Long-term royalty payable: December 31, 2021 December 31, 2020 Balance, beginning of year $ 16,042 $ 18,258 Accretion expense 1,356 3,732 Repayment (7,451) (5,948) Balance, end of year 9,947 16,042 Current portion (5,200) (7,451) Long-term portion $ 4,747 $ 8,591 On January 11, 2016, the Company entered into a financing agreement with Cartesian to support the Company's global growth initiatives. The financing agreement immediately provided $17,500 in cash (the “Tranche 1 Financing”). In consideration for the funds provided to the Company, Cartesian is entitled to royalty payments based on the greater of (i) a percentage of amounts received by the Company on select HPDI 2.0 fuel systems and CWI joint venture income through 2025 and (ii) stated fixed amounts per annum subject to adjustment for asset sales. The carrying value is being accreted to the expected redemption value using the effective interest method, which is approximately 23% per annum. Amounts due to Cartesian are secured by an interest in the Company's HPDI 2.0 fuel systems intellectual property and a priority interest in the Company's CWI joint venture interest. In January 2017, the Company and Cartesian signed a Consent Agreement which allows the Company to sell certain assets in exchange for prepayment of the Cartesian royalty. Cartesian is paid 15% of the net proceeds from these asset sales to a maximum of $15,000, with these payments being allocated on a non-discounted basis to future years' minimum payments. As of December 31, 2021, the total royalty prepayments paid to Cartesian as a result of the Consent Agreement was $11,912. 16. Long-term royalty payable (continued): The estimated repayments including interest are as follows, for the years ending December 31: 2022 $ 5,200 2023 1,320 2024 1,848 2025 2,270 2026 2,851 $ 13,489

Warranty liability

Warranty liability	12 Months Ended
	Dec. 31, 2021
Product Warranties Disclosures [Abstract]
Warranty liability	17. Warranty liability: A continuity of the warranty liability is as follows: Years ended December 31, 2021 2020 Balance, beginning of year $ 18,936 $ 8,901 Warranty claims (5,322) (6,906) Warranty accruals 7,025 16,191 Change in estimate (337) (291) Impact of foreign exchange changes (1,511) 1,041 Balance, end of year 18,791 18,936 Current portion (13,577) (10,749) Long-term portion $ 5,214 $ 8,187 During the year ended December 31, 2020 , the Company recorded a $11,224 warranty accrual related to a field service campaign for the replacement of a pressure release device that the Company manufactures and sells to OEM customers. No safety events or field performance issues have been identified from this product. The Company recorded an insurance recovery of $8,865 related to this issue during the year ended December 31, 2020, including $3,521 in other receivables and $5,344 as an other long-term assets. As at December 31, 2021, the Company had a remaining balance of $655 and $6,931 in other receivables and other long-term assets, respectively, for the aforementioned insurance recovery.

Share capital, stock options an

Share capital, stock options and other stock-based plans	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Share capital, stock options and other stock-based plans	18. Share capital, stock options and other stock-based plans: On November 9, 2020, the Company filed a prospectus supplement to establish an at-the-market equity offering program (the "ATM Program") which allowed the Company to issue up to $50,000 of common shares from treasury to the public from time to time, at the Company's discretion and subject to regulatory requirements. In the first quarter of 2021, the Company issued 1,819,712 common shares at weighted average share price of $7.26 per share for gross proceeds of $13,211, net of total transaction costs of $405, including commission of $264, resulting in net proceeds of $12,806. The ATM Program was completed as of March 20, 2021 and the Company raised a total of $27,586 gross proceeds through this ATM Program. On January 21, 2021, Cartesian exercised its option to convert a principal amount of $2,500, plus accrued and unpaid interest on such principal amount, into 1,815,117 common shares of the Company. On June 8, 2021, the Company completed a marketed public offering of common shares for gross proceeds to the Company of $115,115. The Company issued a total of 20,930,000 common shares at $5.50 per common share, including 2,730,000 common shares following the exercise in full by the underwriters of their over-allotment option. Total transaction costs of $7,194 were incurred and deducted from the gross proceeds for net proceeds of $107,921. 18. Share capital, stock options and other stock-based plans (continued): On August 31, 2021, the Company exercised its option to convert the final principal balance of $2,500, plus accrued and unpaid interest on such principal amount, into 1,836,750 common shares of the Company. As at December 31, 2021, the convertible note was fully repaid and converted into common shares of the Company. During the year ended December 31, 2021, the Company issued 327,774 common shares, net of cancellations, upon exercises of share units (year ended December 31, 2020 – 829,553 common shares). The Company issues shares from treasury to satisfy share unit exercises. (a) Share Units ("Units"): The value assigned to issued Units and the amounts accrued are recorded as other equity instruments. As Units are exercised or vested and the underlying shares are issued from treasury of the Company, the value is reclassified to share capital. During the year ended December 31, 2021, the Company recognized $1,911 (year ended December 31, 2020 - $2,368) of stock-based compensation associated with the Westport Omnibus Plan. A continuity of the Units issued under the Westport Omnibus Plan are as follows: December 31, 2021 December 31, 2020 Number of Weighted Number of Weighted Outstanding, beginning of year 1,452,378 $ 3.29 1,777,941 $ 3.19 Granted 875,703 4.87 525,807 2.09 Vested and exercised (327,774) 3.86 (829,553) 2.31 Forfeited/expired (133,874) 1.62 (21,817) 3.37 Outstanding, end of year 1,866,433 $ 2.98 1,452,378 $ 3.29 Units outstanding and exercisable, end of year 61,086 $ 2.84 22,588 $ 5.69 During the year ended December 31, 2021, 875,703 share units were granted to directors, executives and employees (2020 - 525,807). This included 417,719 Restricted Share Units ("RSUs") (2020 - 504,907) and 457,984 Performance Share Units ("PSUs") (2020 - 20,900). Values of RSU awards are generally determined based on the fair market value of the underlying common shares on the date of grant. RSUs typically vest over a three-year period so the actual value received by the individual depends on the share price on the day such RSUs are settled for common shares, not the date of grant. PSU awards do not have a certain number of common shares that will be issued over time, but are based on future performance and other conditions tied to the payout of the PSU. (b) Aggregate intrinsic values: The aggregate intrinsic value of the Company’s share units at December 31, 2021 and 2020 are as follows: December 31, 2021 December 31, 2020 CDN$ CDN$ Share units: Outstanding $ 5,434 $ 9,787 Exercisable 173 153 (c) Stock-based compensation: Stock-based compensation associated with the Unit plans is included in operating expenses as follows: Years ended December 31, 2021 2020 Cost of revenue $ 91 $ 140 Research and development 217 365 General and administrative 1,502 1,621 Sales and marketing 101 242 $ 1,911 $ 2,368

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income taxes	19. Income taxes: (a) The Company’s income tax provision differs from that calculated by applying the combined enacted Canadian federal and provincial statutory income tax rate of 27% for the year ended December 31, 2021 (year ended December 31, 2020 – 27%) as follows: Years ended December 31, 2021 2020 Income (loss) before income taxes $ 5,527 $ (5,928) Expected income tax expense (recovery) 1,492 (1,601) Increase (reduction) in income taxes resulting from: Non-deductible stock-based compensation 389 244 Other permanent differences 4,559 3,819 Withholding taxes and other foreign taxes 76 804 Change in enacted tax rates 61 (189) Foreign tax rate differences, foreign exchange and other adjustments 457 (1,177) Non-taxable income from equity investment (8,902) (6,418) Change in valuation allowance 2,970 5,949 Bargain purchase gain (1,579) — Tax realignment due to Italian tax law changes (7,654) — Income tax expense (recovery) $ (8,131) $ 1,431 19. Income taxes (continued): (b) The significant components of the deferred income tax assets and liabilities are as follows: December 31, 2021 December 31, 2020 Deferred income tax assets: Net loss carry forwards $ 223,129 $ 218,323 Intangible assets 4,571 4,629 Property, plant and equipment 18,225 17,155 Warranty liability 4,785 4,752 Foreign tax credits 620 620 Inventory 1,614 1,631 Research and development 7,537 6,316 Tax realignment due to Italian tax law changes 8,705 — Other 10,858 10,592 Total gross deferred income tax assets 280,044 264,018 Valuation allowance (268,391) (261,878) Total deferred income tax assets $ 11,653 $ 2,140 Deferred income tax liabilities: Intangible assets $ (430) $ (430) Property, plant and equipment (12) (22) Other (2,950) (2,798) Total deferred income tax liabilities $ (3,392) $ (3,250) Total net deferred income tax assets (liabilities) $ 8,261 $ (1,110) The valuation allowance is reviewed on a quarterly basis to determine if, based on all available evidence, it is more-likely-than-not that some or all of the deferred income tax assets will not be realized. The ultimate realization of deferred income tax assets is dependent on the generation of sufficient taxable income during the future periods in which those temporary differences are expected to reverse. If the evidence does not exist that the deferred income tax assets will be fully realized, a valuation allowance has been provided. The deferred income tax assets have been reduced by the uncertain tax position presented in note 19(f). 19. Income taxes (continued): (c) The components of the Company’s income tax expense (recovery) are as follows: Income tax expense (recovery) Net income (loss) before income taxes Current Deferred Total Year ended December 31, 2021 Italy $ 921 $ 1,417 $ (10,373) $ (8,956) United States 31,476 (3) — (3) Canada (35,809) 69 — 69 Other 8,939 689 70 759 $ 5,527 $ 2,172 $ (10,303) $ (8,131) Year ended December 31, 2020 Italy $ 5,244 $ 2,007 $ (1,146) $ 861 United States 21,400 (274) — (274) Canada (31,429) 80 — 80 Other (1,143) 625 139 764 $ (5,928) $ 2,438 $ (1,007) $ 1,431 (d) The Company has loss carry-forwards in the various tax jurisdictions available to offset future taxable income that expire in the following years, as follows: 2022 2023 2024 2025 and later Total Canada $ — $ — $ — $ 619,313 $ 619,313 Italy — — — 3,254 3,254 United States — — — 97,233 97,233 Sweden — — — 13,241 13,241 Other 3,966 1,660 1,030 15,722 22,378 Total $ 3,966 $ 1,660 $ 1,030 $ 748,763 $ 755,419 Certain tax attributes are subject to an annual limitation as a result of the acquisition of Fuel Systems which constitutes a change of ownership as defined under Internal Revenue Code Section 382. (e) The Company has not recognized a deferred income tax liability for certain undistributed earnings of foreign subsidiaries which are essentially investments in those foreign subsidiaries and are permanent in duration. (f) The Company records uncertain tax positions in accordance with ASC No. 740, Income Taxes. As at December 31, 2021, the total amount of the Company’s uncertain tax benefits was $5,152 (year ended December 31, 2020 - $3,852). If recognized in future periods, the uncertain tax benefits would affect our effective tax rate. The Company files income tax returns in Canada, the U.S., Italy, and various other foreign jurisdictions. All taxation years remain open to examination by the Canada Revenue Agency, the 2018 to 2021 taxation years remain open to examination by the Internal Revenue Service and the 2016 to 2021 taxation years remain open to examination by the Italian Revenue Agency, and various years remain open in the other foreign jurisdictions.

Related party transactions

Related party transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related party transactions	20. Related party transactions: The Company's related parties are CWI, Minda Westport Technologies Limited, directors, officers and shareholders which own greater than 10% of the Company's shares.

Commitments and contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	21. Commitments and contingencies: (a) Contractual commitments The Company is a party to a variety of agreements in the ordinary course of business under which it is obligated to indemnify a third party with respect to certain matters. Typically, these obligations arise as a result of contracts for sale of the Company’s product to customers where the Company provides indemnification against losses arising from matters such as product liabilities. The potential impact on the Company’s financial results is not subject to reasonable estimation because considerable uncertainty exists as to whether claims will be made and the final outcome of potential claims. To date, the Company has not incurred significant costs related to these types of indemnifications. (b) Contingencies The Company is engaged in certain legal actions and tax audits in the ordinary course of business and believes that, based on the information currently available, the ultimate outcome of these actions will not have a material adverse effect on our operating results, liquidity or financial position.

Segment information

Segment information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment information	22. Segment information: The Company manages and reports the results of its business through three segments: OEM, Independent Aftermarket ("IAM"), and Corporate. This reflects the manner in which operating decisions and assessing business performance is currently managed by the Chief Operating Decision Maker ("CODM"). As discussed in note 7 of these consolidated financial statements, the CWI joint venture ended as at December 31, 2021 and the Company's 50% share in the joint venture was sold to Cummins on February 7, 2022. The Company recorded the investment as an asset held for sale as at December 31, 2021 and no longer considered it as an operating segment, however the income from the investment in the CWI joint venture remained as the Corporate equity income in 2021. The comparative segment information below was also adjusted. Financial information by business segment as follows: Year ended December 31, 2021 Revenue Operating income (loss) Depreciation & amortization Equity income OEM $ 195,476 $ (22,259) $ 8,654 $ 773 IAM 116,936 2,046 5,113 — Corporate — (10,333) 268 32,968 Total consolidated $ 312,412 $ (30,546) $ 14,035 $ 33,741 Year ended December 31, 2020 Revenue Operating income (loss) Depreciation & amortization Equity income OEM $ 149,632 $ (21,214) $ 8,225 $ 273 IAM 102,865 6,624 5,562 — Corporate — (7,399) 247 23,774 Total consolidated $ 252,497 $ (21,989) $ 14,034 $ 24,047 Years ended December 31, 2021 2020 Total additions to long-lived assets, excluding business combinations: OEM $ 9,878 $ 2,477 IAM 2,493 3,403 Corporate 1,787 1,243 Total consolidated $ 14,158 $ 7,123 It is impracticable for the Company to provide geographical revenue information by individual countries; however, it is practicable to provide it by geographical regions. Product and service and other revenues are attributable to geographical regions based on location of the Company’s customers and presented as a percentage of the Company’s product and service revenues are as follows: % of total revenue Years ended December 31, 2021 2020 Europe 66 % 70 % Americas 11 % 13 % Asia 12 % 9 % Africa 7 % 3 % Other 4 % 5 % During the year ended December 31, 2021, total revenue of 49,683 (2020 - 51,580), or 16% (2020 - 20%) of total revenue, was generated from our OEM launch partner. As at December 31, 2021, total goodwill of $3,121 (December 31, 2020 - $3,397) was allocated to the IAM segment. As at December 31, 2021, total long-term investments of $1,972 (December 31, 2020 - $1,972) were allocated to the Corporate segment and $1,852 (December 31, 2020 - $1,116) to the OEM segment. Total assets are allocated as follows : Total assets by operating segment Years ended December 31 2021 2020 OEM $ 193,928 $ 148,959 IAM 148,745 156,967 Corporate 128,640 40,337 Total consolidated assets $ 471,313 $ 346,263 The Company’s long-lived assets consist of property, plant and equipment, intangible assets and goodwill. Long-lived assets information by geographic area: December 31, 2021 Property, plant and equipment Intangible assets and goodwill Total Italy $ 21,140 $ 9,131 $ 30,271 Canada 29,095 155 29,250 United States — — — Rest of Europe 9,480 3,121 12,601 Asia Pacific 4,705 — 4,705 Total consolidated long-lived assets $ 64,420 $ 12,407 $ 76,827 December 31, 2020 Property, plant and equipment Intangible assets and goodwill Total Italy $ 24,490 $ 11,613 $ 36,103 Canada 28,557 171 28,728 United States 719 — 719 Rest of Europe 3,713 3,397 7,110 Asia Pacific 633 — 633 Total consolidated long-lived assets $ 57,507 $ 15,181 $ 72,688

Financial instruments

Financial instruments	12 Months Ended
	Dec. 31, 2021
Financial Instruments Disclosure [Abstract]
Financial instruments	23. Financial instruments: Financial risk management The Company has exposure to liquidity risk, credit risk, foreign currency risk and interest rate risk. Liquidity risk Liquidity risk is the risk that the Company will not be able to meet its financial obligations as they are due. The Company has a history of losses and negative cash flows from operations since inception. At December 31, 2021, the Company has $124,892 of cash, cash equivalents and short-term investments, including of $104 restricted cash (see note 3(c)). The following are the contractual maturities of financial obligations as at December 31, 2021: Carrying Contractual < 1 year 1-3 years 4-5 years >5 years Accounts payable and accrued liabilities $ 99,238 $ 99,238 $ 99,238 $ — $ — $ — Short-term debt (note 14) 12,965 12,965 12,965 — — — Term loan facilities (note 15(a)) 53,516 59,514 12,189 26,713 20,075 537 Other bank financing (note 15(c)) 1,231 1,236 690 137 273 136 Capital lease obligations (note 15(d)) 1,655 1,726 587 888 251 — Long-term royalty payable (note 16) 9,947 13,489 5,200 5,438 2,851 Operating lease commitments (note 13) 28,552 32,823 4,190 6,587 4,597 17,449 $ 207,104 $ 220,991 $ 135,059 $ 39,763 $ 28,047 $ 18,122 Credit risk Credit risk arises from the potential that a counterparty to a financial instrument fails to meet its contractual obligations and arises principally from the Company’s cash and cash equivalents, short-term investments and accounts receivable. The Company manages credit risk associated with cash and cash equivalents by regularly investing primarily in liquid short-term paper issued by major banks. The Company monitors its portfolio and its policy is to diversify its investments to manage this potential risk. The Company is also exposed to credit risk with respect to uncertainties as to timing and amount of collectability of accounts receivable and other receivables. As at December 31, 2021, 83% (December 31, 2020 - 83%) of accounts receivable relates to customer receivables, and 17% (December 31, 2020 - 17%) relates to amounts due from related parties and income tax authorities for value added taxes and other tax related refunds. In order to minimize the risk of loss for customer receivables, the Company’s extension of credit to customers involves review and approval by senior management as well as progress payments as contracts are executed. Most sales are invoiced with payment terms in the range of 30 days to 90 days. Refer to note 3(d) for the Company's policy with respect to an allowance for credit losses. Foreign currency risk Foreign currency risk is the risk that the fair value of future cash flows of financial instruments will fluctuate because of changes in foreign currency exchange rates. The Company conducts a significant portion of its business activities in foreign currencies, primarily the U.S. dollar and the Euro. We are subject to foreign currency exchange rate risk to the extent that our costs are denominated in currencies other than those in which we earn revenues. In addition, since our consolidated financial statements are denominated in U.S. dollars, changes in foreign currency exchange rates between the U.S. dollar and other currencies have had, and will continue to have, an impact on our results of operations, financial condition and cash flows. Cash and cash equivalents, short-term investments, accounts receivable, accounts payable, and long-term debt that are denominated in foreign currencies will be affected by changes in the exchange rate between the Canadian dollar and these foreign currencies. The Company’s functional currency is the Canadian dollar. The fluctuation in the average U.S. dollar in recent years has resulted in material impacts on our revenues in those years. If the U.S. dollar continues to fluctuate against other currencies, we will experience additional volatility in our financial statements. A 5% increase/decrease in the relative value of the U.S. dollar against the Canadian dollar and Euro compared to the exchange rates in effect for the year ended December 31, 2021 would have resulted in lower/higher income from operations of approximately $1,851. This assumes a consistent 5% appreciation in the U.S. dollar against the Canadian dollar and the Euro throughout the fiscal year. The timing of changes in the relative value of the U.S. dollar can affect the magnitude of the impact that fluctuations in foreign exchange rates have on our income from operations. Interest rate risk Interest rate risk is the risk that the fair value of future cash flows of a financial instrument will fluctuate because of changes in market interest rates. The Company is subject to interest rate risk on certain short-term and long-term debt with variable rates of interest. The Company limits its exposure to interest rate risk by continually monitoring and adjusting portfolio duration to align to forecasted cash requirements and anticipated changes in interest rates. If interest rates for the year ended December 31, 2021 had increased or decreased by 100 basis points, with all other variables held constant, net loss for the year ended December 31, 2021 would have increased or decreased by $694. 23. Financial instruments (continued): Fair value of financial instruments The carrying amounts reported in the balance sheets for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair values due to the short-term period to maturity of these instruments. The long-term investments represent our interest in WWI, Minda Westport Technologies Limited, and other investments. CWI was accounted for as assets held for sale. WWI and other investments are accounted for at fair value. The carrying values reported in the consolidated balance sheet for obligations under capital and operating leases, which are based upon discounted cash flows, approximate their fair values. The carrying value of the term loan facilities, and other bank financing included in the long-term debt (note 15) do not materially differ from their fair value as at December 31, 2021, as the majority of the term loan facilities, and other bank financing were raised or amended recently. The Company categorizes its fair value measurements for items measured at fair value on a recurring basis into three categories as follows: Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 – Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 – Inputs for the asset or liability that are not based on observable market data (unobservable inputs). When available, the Company uses quoted market prices to determine fair value and classify such items in Level 1. When necessary, Level 2 valuations are performed based on quoted market prices for similar instruments in active markets and/or model–derived valuations with inputs that are observable in active markets. Level 3 valuations are undertaken in the absence of reliable Level 1 or Level 2 information. As at December 31, 2021, cash and cash equivalents and short-term investments are measured at fair value on a recurring basis and are included in Level 1.

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation: The consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated on consolidation. These consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).
Foreign currency translation	Foreign currency translation: The Company’s functional currency is the Canadian dollar and its reporting currency for its consolidated financial statement presentation is the United States dollar ("U.S. Dollar"). The functional currencies for the Company's subsidiaries include the following: U.S. dollar, Canadian dollar, Euro, Argentina Peso, Chinese Renminbi (“RMB”), Swedish Krona, Indian Rupee, and Polish Zloty. The Company translates assets and liabilities of non-U.S. dollar functional currency operations using the period end exchange rates, shareholders’ equity balances using the weighted average of historical exchange rates, and revenues and expenses using the monthly average rate for the period, with the resulting exchange differences recognized in other comprehensive income. Transactions that are denominated in currencies other than the functional currencies of the Company’s or its subsidiaries' operations are translated at the rates in effect on the date of the transaction. Foreign currency denominated monetary assets and liabilities are translated to the applicable functional currency at the exchange rates in effect on the balance sheet date. Non-monetary assets and liabilities are translated at the historical exchange rate. All foreign exchange gains and losses are recognized in the statement of operations, except for the translation gains and losses arising from available-for-sale instruments, which are recorded through other comprehensive income until realized through disposal or impairment.
Cash and cash equivalents	Cash and cash equivalents (including restricted cash):Cash and cash equivalents include cash on hand, term deposits, banker acceptances and guaranteed investment certificates with maturities of ninety days or less when acquired. Cash equivalents are considered as held for trading and recorded at fair value with changes in fair value recognized in the consolidated statements of operations. Cash and cash equivalents at December 31, 2021 include restricted cash of $104 (2020 - $75). Restricted cash at December 31, 2021 and 2020 is related to cash used to secure a letter of credit.
Accounts receivable, net	Accounts receivable, net:The accounts receivable balance reflects invoiced and accrued revenue and is presented net of an allowance for credit losses. The Company expects the majority of its accounts receivable balances to continue to come from large customers as it supplies the majority of its products and services through a network of distributors and Original Equipment Manufacturers ("OEM") and provides Delayed OEM ("DOEM") services. The Company establishes current expected credit losses ("CECL") for pools of assets with similar risk characteristics by evaluating historical levels of credit losses, current economic conditions that may affect a customer's ability to pay, and creditworthiness of significant customers. When specific customers are identified as no longer sharing the same risk profile as their current pool, they are removed from the pool and evaluated separately. The Company, in the normal course of business, monitors the financial condition of its customers and reviews the credit history of each new customer. When the Company becomes aware of a specific customer's inability to meet its financial obligations to the Company (such as in the case of bankruptcy filings or material deterioration in the customer's operating results or financial position, and payment experiences), the Company records a specific credit loss provision to reduce the customer's related accounts receivable to its estimated net realizable value. If circumstances related to specific customers change, the Company's estimates of the recoverability of accounts receivable balances could be further adjusted.
Inventories	Inventories:The Company’s inventories consist of the Company’s fuel system products (finished goods), work-in-progress, purchased parts and assembled parts. Inventories are recorded at the lower of cost and net realizable value. Cost is determined based on the lower of weighted average cost or first-in, first-out. The cost of fuel system product inventories, assembled parts and work-in-progress includes materials, labour and production overhead, including depreciation. The Company records inventory write-downs based on an analysis of excess and obsolete inventories determined primarily by future demand forecasts. In addition, the Company records a liability for firm, noncancellable, and unconditional purchase commitments with manufacturers for quantities in excess of the Company’s future demand forecast consistent with its valuation of excess and obsolete inventory.
Property, plant and equipment	Property, plant and equipment: Property, plant and equipment are stated at cost. Depreciation is provided for as follows: Assets Basis Rate Buildings Straight-line 10 years Computer equipment and software Straight-line 3 years Furniture and fixtures Straight-line 5 years Machinery and equipment Straight-line 5 - 10 years Leasehold improvements Straight-line Lease term Depreciation expense on machinery and equipment used in the production and manufacturing process is included in cost of revenue. All other depreciation is included in depreciation and amortization expense in the statement of operations and comprehensive loss.
Long-term investments	Long-term investments:The Company accounts for investments in which it has significant influence, including variable interest entities ("VIEs") for which the Company is not the primary beneficiary, using the equity method of accounting. Under the equity method, the Company recognizes its share of income from equity accounted investees in the statement of operations with a corresponding increase in long-term investments. Any dividends paid or payable are credited against long-term investments.
Financial liabilities	Financial liabilities:Accounts payable and accrued liabilities, short-term debt and long-term debt are measured at amortized cost. Transaction costs relating to long-term debt are netted against long-term debt and are amortized using the effective interest rate method.
Research and development costs	Research and development costs:Research and development costs are expensed as incurred and are recorded net of funding received or receivable.
Intangible assets	Intangible assets:Intangible assets consist primarily of the estimated value of intellectual property, trademarks, technology, customer contracts and non-compete agreements acquired through acquisitions. Intangible assets are amortized over their estimated useful lives, which range from 5 to 20 years.
Impairment of long-lived assets	Impairment of long-lived assets: The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. If such conditions exist, assets are considered impaired if the sum of the undiscounted expected future cash flows expected to result from the use and eventual disposition of an asset is less than its carrying amount. An impairment loss is measured at the amount by which the carrying amount of the asset exceeds its fair value. When quoted market prices are not available, the Company uses the expected future cash flows discounted at a rate commensurate with the risks associated with the recovery of the asset as an estimate of fair value. The Company has significant investments in property, plant and equipment used in its heavy-duty OEM business, relating to the HPDI 2.0 fuel systems that is in the early stages of commercialization, and, as a result, is currently generating losses. Based on the Company's current projections, meaningful increases in component sales, compared to 2021 levels, are expected, allowing the business to benefit from economies of scale and become profitable. If these assumptions are not realized, the Company may be required to record an impairment on these assets in future periods.
Goodwill	Goodwill:Goodwill is recorded at the time of purchase for the excess of the amount of the purchase price over the fair values of the identifiable assets acquired and liabilities assumed. Goodwill is not amortized and instead is tested at least annually for impairment, or more frequently when events or changes in circumstances indicate that goodwill might be impaired. This impairment test is performed annually at December 31. Future adverse changes in market conditions or poor operating results of underlying assets could result in an inability to recover the carrying value of the goodwill, thereby possibly requiring an impairment charge.
Warranty liability	Warranty liability:Estimated warranty costs are recognized at the time the Company sells its products and are included in cost of revenue. The Company provides warranty coverage on products sold from the date the products are put into service by customers. Warranty liability represents the Company’s best estimate of warranty costs expected to be incurred during the warranty period.  Furthermore, the current portion of warranty liability represents the Company’s best estimate of the costs to be incurred in the next twelve-month period. The Company uses historical failure rates and costs to repair defective products to estimate the warranty liability. New product launches require a greater use of judgment in developing estimates until claims experience becomes available. Product specific experience is typically available four or five quarters after product launch, with a clear experience trend not evident until eight to twelve quarters after launch. The Company records warranty expense for new products using historical experience from previous engine generations in the first year, a blend of actual product and historical experience in the second year and product specific experience thereafter. The amount payable by the Company and the timing will depend on actual failure rates and cost to repair failures of its products.
Revenue recognition	Revenue recognition:The Company generates revenues primarily from product sales. Product revenues are derived from standard product sales contracts and from long-term fixed price contracts. The Company recognizes revenue when a customer obtains control of the goods or services. Determining the timing of the transfer of control, at a point in time or over time, requires judgment. On standard product sales contracts, revenues are recognized when customers obtain control of the product, that is when transfer of title and risks and rewards of ownership of goods have passed and when obligation to pay is considered certain. Invoices are generated and revenue is recognized at that point in time. Provisions for warranties are made at the time of sale. Service revenue is recognized over time as performance obligations are satisfied.
Income taxes	Income taxes: The Company accounts for income taxes using the asset and liability method. Under this method, deferred income tax assets and liabilities are determined based on the temporary differences between the accounting basis and tax basis of the assets and liabilities and for loss carry-forwards, tax credits and other tax attributes, using the enacted tax rates in effect for the years in which the differences are expected to reverse. The effect of a change in tax rates on the deferred income tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company recognizes deferred income tax assets to the extent the assets are more-likely-than-not to be realized. In making such a determination the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If it is determined that, based on all available evidence, it is more-likely-than-not that some or all of the deferred income tax assets will not be realized, a valuation allowance is provided to reduce the deferred income tax assets. The Company uses a two-step process to recognize and measure the income tax benefit of uncertain tax positions taken or expected to be taken in a tax return. The tax benefit from an uncertain tax position is recognized if it is more-likely-than-not that the position will be sustained upon examination by a tax authority based solely on the technical merits of the position. A tax benefit that meets the more-likely-than-not recognition threshold is measured as the largest amount that is greater than 50% likely to be realized upon settlement with the tax authority. To the extent a full benefit is not expected to be realized, an income tax liability is established. Any change in judgment related to the expected resolution of an uncertain tax position is recognized in the year of such a change.

Significant accounting polici_3

Significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Foreign Currency Exchange Rate Translation	For the years presented, the Company used the following exchange rates: Year-end exchange rate as at: Average for the year ended: December 31, 2021 December 31, 2020 December 31, 2021 December 31, 2020 Canadian dollar 1.27 1.27 1.25 1.34 Euro 0.88 0.82 0.85 0.88 RMB 6.35 6.53 6.45 6.90 Polish Zloty 4.04 3.72 3.92 3.90 Swedish Krona 9.05 8.19 8.57 9.18 Indian Rupee 74.45 73.00 73.92 74.08 Argentina Peso 102.54 84.06 94.79 69.59
Schedule of Property Plant and Equipment Components	Property, plant and equipment are stated at cost. Depreciation is provided for as follows: Assets Basis Rate Buildings Straight-line 10 years Computer equipment and software Straight-line 3 years Furniture and fixtures Straight-line 5 years Machinery and equipment Straight-line 5 - 10 years Leasehold improvements Straight-line Lease term

Business combinations (Tables)

Business combinations (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table summarizes the final allocation of the purchase price to the fair values of assets acquired and liabilities assumed at the date of the acquisition. Consideration allocated to: Cash and cash equivalents $ 1,180 Accounts receivable (1) 5,609 Inventory (2) 4,217 Property, plant and equipment (3) 6,435 Other assets 319 Accounts payable and accrued liabilities (4) (4,678) Deferred income tax liabilities (96) Total net identifiable assets $ 12,986 Bargain purchase gain (5,856) Total consideration $ 7,130 (1) The fair value of $5,609 of accounts receivable was based on the cash flows expected to be collectible. (2) The fair value of inventory of $4,217 assigned to inventory was based on estimated selling prices net of selling costs associated with finished goods, and replacement value for raw materials and unassembled components. (3) Property, plant and equipment of $6,435 was determined based on their estimated fair market values. (4) The fair value of $4,678 of accounts payable and accrued liabilities acquired was based on the expected amount to be paid. No contingent liabilities were identified subsequent to the acquisition date.
Business Acquisition, Pro Forma Information	The following unaudited supplemental proforma information presents the consolidated financial results as if the acquisition of Stako had occurred on January 1, 2020. This supplemental proforma information has been prepared for comparative purposes and does not purport to be indicative of what would have occurred had the acquisition been made on January 1, 2020, nor are they indicative of any future results. Included in revenue and net income for the year ended December 31, 2021 are $13,791 and $1,601 related to the operations of Stako, respectively. Years ended December 31 2021 2020 Revenue Revenue for the period $ 312,412 $ 252,497 Stako for the period (prior to acquisition) 10,217 19,263 Proforma revenue for the period $ 322,629 $ 271,760 Net income (loss) Net income (loss) for the period $ 13,658 $ (7,359) Stako for the period (prior to acquisition) 722 1,260 Proforma adjustments (1) (5,377) — Adjusted proforma net income (loss) for the period $ 9,003 $ (6,099) (1) Includes adjustment of the bargain purchase gain and transaction costs incurred for the acquisition during the year.

Accounts receivable (Tables)

Accounts receivable (Tables)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Schedule of Accounts Receivable	December 31, 2021 December 31, 2020 Customer trade receivables $ 90,324 $ 80,972 Other receivables 14,504 14,967 Income tax receivable 872 52 Due from related parties (notes 7 and 20) 1,651 1,070 Allowance for credit losses (5,843) (6,594) $ 101,508 $ 90,467

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Schedule of Inventories	December 31, 2021 December 31, 2020 Purchased parts and materials $ 62,896 $ 36,066 Work-in-process 3,681 3,203 Finished goods 16,551 12,133 $ 83,128 $ 51,402

Assets held for sale (Tables)

Assets held for sale (Tables)	12 Months Ended
	Dec. 31, 2021
Long-term Investments [Abstract]
Schedule of Long-term Investments	The Company recognized its share of CWI’s income and received dividends as follows: Years ended December 31, 2021 2020 Investment income from CWI $ 32,969 $ 23,774 Dividends received 21,796 20,758 Assets, liabilities, revenue and expenses of CWI, are as follows: December 31, 2021 December 31, 2020 Current assets: Cash and short-term investments $ 113,936 $ 94,984 Accounts receivable 9,999 5,681 Long-term assets: Property, plant and equipment 259 605 Deferred income tax assets 22,584 21,651 Total assets $ 146,778 $ 122,921 Current liabilities: Accounts payable and accrued liabilities $ 5,509 $ 5,557 Current portion of warranty liability 26,105 19,485 Current portion of deferred revenue 12,374 13,628 43,988 38,670 Long-term liabilities: Warranty liability 36,267 34,737 Deferred revenue 20,122 23,802 Other long-term liabilities 2,312 3,969 58,701 62,508 Total liabilities $ 102,689 $ 101,178 Years ended December 31, 2021 2020 Product revenue $ 252,135 $ 219,141 Parts revenue 115,371 104,339 367,506 323,480 Cost of revenue and expenses: Cost of product and parts revenue 268,440 236,154 Research and development 6,084 12,185 General and administrative 1,778 1,650 Sales and marketing 12,865 12,567 289,167 262,556 Income from operations 78,339 60,924 Interest and investment income 522 1,074 Income before income taxes 78,861 61,998 Income tax expense: Current 13,857 14,779 Deferred (933) (329) 12,924 14,450 Income for the year $ 65,937 $ 47,548 December 31, 2021 December 31, 2020 Weichai Westport Inc. $ 1,824 $ 1,824 Minda Westport Technologies Limited 1,852 1,116 Other equity accounted investees 148 148 $ 3,824 $ 3,088
Schedule of Variable Interest Entities	The carrying amount and maximum exposure to losses relating to CWI were as follows: Balance at December 31, 2021 Balance at December 31, 2020 Carrying Maximum Carrying Maximum Equity method investment in CWI $ 22,039 $ 22,039 $ 10,866 $ 10,866 Accounts receivable due from CWI 58 58 74 74

Long-term investments (Tables)

Long-term investments (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Long-term Investments	The Company recognized its share of CWI’s income and received dividends as follows: Years ended December 31, 2021 2020 Investment income from CWI $ 32,969 $ 23,774 Dividends received 21,796 20,758 Assets, liabilities, revenue and expenses of CWI, are as follows: December 31, 2021 December 31, 2020 Current assets: Cash and short-term investments $ 113,936 $ 94,984 Accounts receivable 9,999 5,681 Long-term assets: Property, plant and equipment 259 605 Deferred income tax assets 22,584 21,651 Total assets $ 146,778 $ 122,921 Current liabilities: Accounts payable and accrued liabilities $ 5,509 $ 5,557 Current portion of warranty liability 26,105 19,485 Current portion of deferred revenue 12,374 13,628 43,988 38,670 Long-term liabilities: Warranty liability 36,267 34,737 Deferred revenue 20,122 23,802 Other long-term liabilities 2,312 3,969 58,701 62,508 Total liabilities $ 102,689 $ 101,178 Years ended December 31, 2021 2020 Product revenue $ 252,135 $ 219,141 Parts revenue 115,371 104,339 367,506 323,480 Cost of revenue and expenses: Cost of product and parts revenue 268,440 236,154 Research and development 6,084 12,185 General and administrative 1,778 1,650 Sales and marketing 12,865 12,567 289,167 262,556 Income from operations 78,339 60,924 Interest and investment income 522 1,074 Income before income taxes 78,861 61,998 Income tax expense: Current 13,857 14,779 Deferred (933) (329) 12,924 14,450 Income for the year $ 65,937 $ 47,548 December 31, 2021 December 31, 2020 Weichai Westport Inc. $ 1,824 $ 1,824 Minda Westport Technologies Limited 1,852 1,116 Other equity accounted investees 148 148 $ 3,824 $ 3,088

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Accumulated Net book December 31, 2021 Cost depreciation value Land and buildings $ 8,843 $ 1,883 $ 6,960 Computer equipment and software 7,965 6,054 1,911 Furniture and fixtures 6,223 5,149 1,074 Machinery and equipment 113,479 62,320 51,159 Leasehold improvements 13,502 10,186 3,316 $ 150,012 $ 85,592 $ 64,420 Accumulated Net book December 31, 2020 Cost depreciation value Land and buildings $ 5,303 $ 1,701 $ 3,602 Computer equipment and software 7,045 5,570 1,475 Furniture and fixtures 4,968 4,148 820 Machinery and equipment 102,834 54,387 48,447 Leasehold improvements 12,479 9,316 3,163 $ 132,629 $ 75,122 $ 57,507

Intangible assets (Tables)

Intangible assets (Tables)	12 Months Ended
	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Schedule of Finite-Lived Intangible Assets	Accumulated Net book December 31, 2021 Cost amortization value Patents and trademarks $ 20,748 $ 11,823 $ 8,925 Technology 4,202 3,894 308 Customer contracts 11,954 11,901 53 Total $ 36,904 $ 27,618 $ 9,286 Accumulated Net book December 31, 2020 Cost amortization value Patents and trademarks $ 21,763 $ 11,513 $ 10,250 Technology 6,040 5,613 427 Customer contracts 13,234 12,283 951 Other intangibles 477 321 156 Total $ 41,514 $ 29,730 $ 11,784

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	A continuity of goodwill is as follows: December 31, 2021 December 31, 2020 Balance, beginning of year $ 3,397 $ 3,110 Impact of foreign exchange changes (276) 287 Balance, end of year $ 3,121 $ 3,397

Accounts payable and accrued _2

Accounts payable and accrued liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Accounts Payable and Accrued Liabilities, Current [Abstract]
Schedule of Accounts Payable and Accrued Liabilities	December 31, 2021 December 31, 2020 Trade accounts payable $ 73,388 $ 57,307 Accrued payroll 16,591 14,737 Accrued interest — 137 Taxes payable 4,621 3,905 Deferred revenue 3,503 8,008 Other payables 1,135 505 $ 99,238 $ 84,599

Operating leases right-of-use_2

Operating leases right-of-use assets (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of Lease Cost	The components of lease cost are as follows: Years ended December 31, 2021 2020 Operating lease cost: Amortization of right-of-use assets $ 3,620 $ 3,874 Interest 891 813 Total lease cost $ 4,511 $ 4,687
Schedule of Maturities of Lease Liabilities	The maturities of lease liabilities as of December 31, 2021 are as follows: 2022 $ 4,190 2023 3,499 2024 3,088 2025 2,549 2026 2,048 Thereafter 17,449 Total undiscounted cash flows 32,823 Less: imputed interest (4,271) Present value of operating lease liabilities 28,552 Less: current portion (4,190) Long term operating lease liabilities $ 24,362

Short-term debt (Tables)

Short-term debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Short-term Debt	December 31, 2021 December 31, 2020 Revolving financing facility (a) $ 12,965 $ 17,428 Credit facility (b) — 6,017 Balance, end of year $ 12,965 $ 23,445 (a) The Company has a revolving financing facility with HSBC. This facility is secured by certain receivables of the Company and the maximum draw amount is $20,000, based on the receivables outstanding. As the Company collects these secured receivables, the facility is repaid. The interest rate for this facility was the LIBOR rate plus 2.5%. On December 22, 2021, the Company and HSBC amended the revolving financing facility's advances denominated in U.S. Dollars' and Euros' interest rates to the secured overnight financing rate plus 2.66% per annum and Euro short-term rate plus 2.5%, respectively. (b) On July 23, 2020, the Company entered into a one

Long-term debt (Tables)

Long-term debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	December 31, 2021 December 31, 2020 Term loan facilities, net of debt issuance costs (a) $ 53,516 $ 53,731 Convertible debt (b) — 4,362 Other bank financing (c) 1,231 1,325 Capital lease obligations (d) 1,655 2,535 Balance, end of year 56,402 61,953 Current portion (11,277) (16,302) Long-term portion $ 45,125 $ 45,651 (a) On December 20, 2017, the Company entered into a loan agreement with EDC for a $20,000 non-revolving term facility. The Company incurred debt issuance costs of $1,013 related to this loan, which are being amortized over the loan term using the effective interest rate method. The loan bore interest at 6% (prior to March 1, 2019, 9% plus monitoring fees), payable quarterly, as well as quarterly principal repayments. On December 13, 2021, the credit facility and non-revolving term facility were refinanced to a $20,000 term loan. The refinanced term loan provides an extension of the maturity of the indebtedness to EDC to September 15, 2026 and reduced the interest rate to U.S. Prime rate plus 2.01% per annum. The Company incurred transaction costs of $300 related to this amendment, which are being amortized over the remainder of the loan term from the debt modification date using the effective interest rate method. As at December 31, 2021 the amount outstanding for this loan was $18,583, net of transaction costs, compared to $13,618, net of transaction costs, as at December 31, 2020. The loan is secured by share pledges over Westport Fuel Systems Canada Inc., Fuel Systems Solutions, Inc., Westport Luxembourg S.a.r.l and by certain of the Company's property, plant and equipment. 15. Long-term debt (continued): On October 9, 2018, and November 28, 2019, the Company entered into Euro denominated loan agreements with UniCredit S.p.A. ("UniCredit"). These loan bears interest at an annual rate of 2.3% and 1.8%, respectively, and interest is paid quarterly. The loans matures on December 31, 2023 and September 30, 2023, respectively. On April 29, 2021, the Company and UniCredit amended the terms of the above Euro denominated loan agreements to combine the facilities into one $8,803 loan facility. This loan matures on March 31, 2027, bears interest at an annual rate of 1.65% and interest is paid quarterly. The cash pledge is removed after the amendment. As at December 31, 2021, the amount outstanding for this loan was $8,470 compared to $7,246 as at December 31, 2020. On May 20, 2020, the Company entered into a third Euro denominated loan agreement with UniCredit. The effective interest rate of this loan is 1.82% with a maturity date of May 31, 2025. As at December 31, 2021, the amount outstanding for this loan was $4,000 compared to $5,558 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government's COVID-19 Decreto Liquidità to help Italian companies to secure liquidity to continue operating while mitigating some of the impact of COVID-19. On July 17, 2020, the Company entered into a fourth Euro denominated loan agreement with UniCredit. The effective interest rate of this loan is 1.75% with a maturity date of July 31, 2026. As at December 31, 2021, the amount outstanding for this loan was $15,335 compared to $18,650 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government’s COVID-19 Decreto Liquidità. On August 11, 2020, the Company entered into a Euro denominated loan agreement with Deutsche Bank. The effective interest rate of this loan is 1.7% with a maturity date of August 31, 2026. As at December 31, 2021, the amount outstanding for this loan was $7,128 compared to $8,659 as at December 31, 2020. There is no security on the loan as it was made as part of the Italian government’s COVID-19 Decreto Liquidità. (b) On January 11, 2016, the Company entered into a financing agreement ("Tranche 2 Financing") with Cartesian. As part of the agreement, on June 1, 2016, convertible debt was issued in exchange for 9.0% convertible unsecured notes due June 1, 2021, which are convertible into common shares of the Company in whole or in part, at Cartesian's option, at any time following the twelve month anniversary of the closing at a conversion price of $2.17 per share. Interest is payable annually in arrears on December 31 of each year during the term. On July 24, 2020, Westport restructured the Tranche 2 Financing agreement and entered into a new financing agreement with Cartesian. Under the terms of the agreement, the Company agreed to pay down the principal amount of the existing convertible notes from $17,500 to $10,000. Concurrent with such repayment, the maturity of the remaining amended notes was extended three years to July 30, 2023, the coupon rate was reduced from 9.0% annually to 6.5% annually, and the conversion price was revised from $2.17 per share to $1.42 per share. During the fourth quarter of 2020, Cartesian exercised its option to convert principal amounts of $5,000, plus accrued but unpaid interest on such principal amounts, into common shares of the Company. On January 21, 2021, and August 31, 2021, respectively, Cartesian exercised its options to convert a principal amount of $2,500, plus accrued and unpaid interest on such principal amount, into 1,815,117 common shares of the Company and the final principal balance of $2,500, plus accrued and unpaid interest on such principal amount, into 1,836,750 common shares of the Company, respectively. As at December 31, 2021, the convertible note was fully repaid and converted into common shares of the Company. (c) Other bank financing consists of various secured and unsecured bank financing arrangements that carry rates of interest ranging from 0.75% to 3.8% and have various maturities out to 2025. Security includes a building owned by the Company in the Netherlands and certain accounts receivable. two
Schedule of Maturities of Long-term Debt	The principal repayment schedule of long-term debt is as follows as at December 31, 2021: Term loan facilities Other bank financing Capital lease obligations Total 2022 $ 10,057 $ 687 $ 517 $ 11,261 2023 11,582 — 460 12,042 2024 12,167 136 427 12,730 2025 11,609 136 228 11,973 2026 and thereafter 8,101 272 23 8,396 $ 53,516 $ 1,231 $ 1,655 $ 56,402 The estimated repayments including interest are as follows, for the years ending December 31: 2022 $ 5,200 2023 1,320 2024 1,848 2025 2,270 2026 2,851 $ 13,489

Long-term royalty payable (Tabl

Long-term royalty payable (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Royalty Payable	December 31, 2021 December 31, 2020 Balance, beginning of year $ 16,042 $ 18,258 Accretion expense 1,356 3,732 Repayment (7,451) (5,948) Balance, end of year 9,947 16,042 Current portion (5,200) (7,451) Long-term portion $ 4,747 $ 8,591
Schedule of Maturities of Long-term Debt	The principal repayment schedule of long-term debt is as follows as at December 31, 2021: Term loan facilities Other bank financing Capital lease obligations Total 2022 $ 10,057 $ 687 $ 517 $ 11,261 2023 11,582 — 460 12,042 2024 12,167 136 427 12,730 2025 11,609 136 228 11,973 2026 and thereafter 8,101 272 23 8,396 $ 53,516 $ 1,231 $ 1,655 $ 56,402 The estimated repayments including interest are as follows, for the years ending December 31: 2022 $ 5,200 2023 1,320 2024 1,848 2025 2,270 2026 2,851 $ 13,489

Warranty liability (Tables)

Warranty liability (Tables)	12 Months Ended
	Dec. 31, 2021
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability	A continuity of the warranty liability is as follows: Years ended December 31, 2021 2020 Balance, beginning of year $ 18,936 $ 8,901 Warranty claims (5,322) (6,906) Warranty accruals 7,025 16,191 Change in estimate (337) (291) Impact of foreign exchange changes (1,511) 1,041 Balance, end of year 18,791 18,936 Current portion (13,577) (10,749) Long-term portion $ 5,214 $ 8,187

Share capital, stock options _2

Share capital, stock options and other stock-based plans (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A continuity of the Units issued under the Westport Omnibus Plan are as follows: December 31, 2021 December 31, 2020 Number of Weighted Number of Weighted Outstanding, beginning of year 1,452,378 $ 3.29 1,777,941 $ 3.19 Granted 875,703 4.87 525,807 2.09 Vested and exercised (327,774) 3.86 (829,553) 2.31 Forfeited/expired (133,874) 1.62 (21,817) 3.37 Outstanding, end of year 1,866,433 $ 2.98 1,452,378 $ 3.29 Units outstanding and exercisable, end of year 61,086 $ 2.84 22,588 $ 5.69
Schedule of Share Based Compensation Arrangement by Share Based Payment Award Intrinsic Value	The aggregate intrinsic value of the Company’s share units at December 31, 2021 and 2020 are as follows: December 31, 2021 December 31, 2020 CDN$ CDN$ Share units: Outstanding $ 5,434 $ 9,787 Exercisable 173 153
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	Stock-based compensation associated with the Unit plans is included in operating expenses as follows: Years ended December 31, 2021 2020 Cost of revenue $ 91 $ 140 Research and development 217 365 General and administrative 1,502 1,621 Sales and marketing 101 242 $ 1,911 $ 2,368

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	The Company’s income tax provision differs from that calculated by applying the combined enacted Canadian federal and provincial statutory income tax rate of 27% for the year ended December 31, 2021 (year ended December 31, 2020 – 27%) as follows: Years ended December 31, 2021 2020 Income (loss) before income taxes $ 5,527 $ (5,928) Expected income tax expense (recovery) 1,492 (1,601) Increase (reduction) in income taxes resulting from: Non-deductible stock-based compensation 389 244 Other permanent differences 4,559 3,819 Withholding taxes and other foreign taxes 76 804 Change in enacted tax rates 61 (189) Foreign tax rate differences, foreign exchange and other adjustments 457 (1,177) Non-taxable income from equity investment (8,902) (6,418) Change in valuation allowance 2,970 5,949 Bargain purchase gain (1,579) — Tax realignment due to Italian tax law changes (7,654) — Income tax expense (recovery) $ (8,131) $ 1,431
Schedule of Deferred Tax Assets and Liabilities	The significant components of the deferred income tax assets and liabilities are as follows: December 31, 2021 December 31, 2020 Deferred income tax assets: Net loss carry forwards $ 223,129 $ 218,323 Intangible assets 4,571 4,629 Property, plant and equipment 18,225 17,155 Warranty liability 4,785 4,752 Foreign tax credits 620 620 Inventory 1,614 1,631 Research and development 7,537 6,316 Tax realignment due to Italian tax law changes 8,705 — Other 10,858 10,592 Total gross deferred income tax assets 280,044 264,018 Valuation allowance (268,391) (261,878) Total deferred income tax assets $ 11,653 $ 2,140 Deferred income tax liabilities: Intangible assets $ (430) $ (430) Property, plant and equipment (12) (22) Other (2,950) (2,798) Total deferred income tax liabilities $ (3,392) $ (3,250) Total net deferred income tax assets (liabilities) $ 8,261 $ (1,110)
Schedule of Components of Income Tax Expense (Benefit)	The components of the Company’s income tax expense (recovery) are as follows: Income tax expense (recovery) Net income (loss) before income taxes Current Deferred Total Year ended December 31, 2021 Italy $ 921 $ 1,417 $ (10,373) $ (8,956) United States 31,476 (3) — (3) Canada (35,809) 69 — 69 Other 8,939 689 70 759 $ 5,527 $ 2,172 $ (10,303) $ (8,131) Year ended December 31, 2020 Italy $ 5,244 $ 2,007 $ (1,146) $ 861 United States 21,400 (274) — (274) Canada (31,429) 80 — 80 Other (1,143) 625 139 764 $ (5,928) $ 2,438 $ (1,007) $ 1,431
Summary of Operating Loss Carryforwards	The Company has loss carry-forwards in the various tax jurisdictions available to offset future taxable income that expire in the following years, as follows: 2022 2023 2024 2025 and later Total Canada $ — $ — $ — $ 619,313 $ 619,313 Italy — — — 3,254 3,254 United States — — — 97,233 97,233 Sweden — — — 13,241 13,241 Other 3,966 1,660 1,030 15,722 22,378 Total $ 3,966 $ 1,660 $ 1,030 $ 748,763 $ 755,419

Segment information (Tables)

Segment information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	Financial information by business segment as follows: Year ended December 31, 2021 Revenue Operating income (loss) Depreciation & amortization Equity income OEM $ 195,476 $ (22,259) $ 8,654 $ 773 IAM 116,936 2,046 5,113 — Corporate — (10,333) 268 32,968 Total consolidated $ 312,412 $ (30,546) $ 14,035 $ 33,741 Year ended December 31, 2020 Revenue Operating income (loss) Depreciation & amortization Equity income OEM $ 149,632 $ (21,214) $ 8,225 $ 273 IAM 102,865 6,624 5,562 — Corporate — (7,399) 247 23,774 Total consolidated $ 252,497 $ (21,989) $ 14,034 $ 24,047 Years ended December 31, 2021 2020 Total additions to long-lived assets, excluding business combinations: OEM $ 9,878 $ 2,477 IAM 2,493 3,403 Corporate 1,787 1,243 Total consolidated $ 14,158 $ 7,123
Schedule of Geographical Revenue Information	Product and service and other revenues are attributable to geographical regions based on location of the Company’s customers and presented as a percentage of the Company’s product and service revenues are as follows: % of total revenue Years ended December 31, 2021 2020 Europe 66 % 70 % Americas 11 % 13 % Asia 12 % 9 % Africa 7 % 3 % Other 4 % 5 %
Schedule of Allocation of the Total Assets	Total assets are allocated as follows : Total assets by operating segment Years ended December 31 2021 2020 OEM $ 193,928 $ 148,959 IAM 148,745 156,967 Corporate 128,640 40,337 Total consolidated assets $ 471,313 $ 346,263
Schedule of Assets by Segment	Long-lived assets information by geographic area: December 31, 2021 Property, plant and equipment Intangible assets and goodwill Total Italy $ 21,140 $ 9,131 $ 30,271 Canada 29,095 155 29,250 United States — — — Rest of Europe 9,480 3,121 12,601 Asia Pacific 4,705 — 4,705 Total consolidated long-lived assets $ 64,420 $ 12,407 $ 76,827 December 31, 2020 Property, plant and equipment Intangible assets and goodwill Total Italy $ 24,490 $ 11,613 $ 36,103 Canada 28,557 171 28,728 United States 719 — 719 Rest of Europe 3,713 3,397 7,110 Asia Pacific 633 — 633 Total consolidated long-lived assets $ 57,507 $ 15,181 $ 72,688

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Financial Instruments Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule	The following are the contractual maturities of financial obligations as at December 31, 2021: Carrying Contractual < 1 year 1-3 years 4-5 years >5 years Accounts payable and accrued liabilities $ 99,238 $ 99,238 $ 99,238 $ — $ — $ — Short-term debt (note 14) 12,965 12,965 12,965 — — — Term loan facilities (note 15(a)) 53,516 59,514 12,189 26,713 20,075 537 Other bank financing (note 15(c)) 1,231 1,236 690 137 273 136 Capital lease obligations (note 15(d)) 1,655 1,726 587 888 251 — Long-term royalty payable (note 16) 9,947 13,489 5,200 5,438 2,851 Operating lease commitments (note 13) 28,552 32,823 4,190 6,587 4,597 17,449 $ 207,104 $ 220,991 $ 135,059 $ 39,763 $ 28,047 $ 18,122

Liquidity and impact of COVID_2

Liquidity and impact of COVID-19 (Details) - USD ($)	Feb. 07, 2022	Dec. 13, 2021	Jun. 08, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Equity raised through offering			$ 115,115,000	$ 120,727,000	$ 13,904,000
Government wage-subsidy and other support programs				1,065,000	6,093,000
Cash and cash equivalents				124,892,000	64,262,000	$ 46,012,000
Net cash used in operating activities				$ (43,793,000)	$ (35,149,000)
EDC Loan | Term Loan
Debt Instrument [Line Items]
Long-term debt		$ 20,000,000
Credit facility term		5 years
Subsequent Event | Cummins Westport, Inc.
Debt Instrument [Line Items]
Proceeds from sale of interest	$ 22,200,000
Proceeds from sale of intellectual property	$ 20,000,000

Significant accounting polici_4

Significant accounting policies - Exchange Rates (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Canadian dollar
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	1.27	1.27
Average foreign currency exchange rate	1.25	1.34
Euro
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	0.88	0.82
Average foreign currency exchange rate	0.85	0.88
Argentina Peso
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	102.54	84.06
Average foreign currency exchange rate	94.79	69.59
RMB
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	6.35	6.53
Average foreign currency exchange rate	6.45	6.90
Swedish Krona
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	9.05	8.19
Average foreign currency exchange rate	8.57	9.18
Indian Rupee
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	74.45	73
Average foreign currency exchange rate	73.92	74.08
Polish Zloty
Schedule of Foreign Currency [Line Items]
Foreign current exchange rate at year end	4.04	3.72
Average foreign currency exchange rate	3.92	3.90

Significant accounting polici_5

Significant accounting policies - Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Restricted cash	$ 104	$ 75

Significant accounting polici_6

Significant accounting policies - Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2021
Buildings
Property, Plant and Equipment [Line Items]
Useful life (in years)	10 years
Computer equipment and software
Property, Plant and Equipment [Line Items]
Useful life (in years)	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life (in years)	5 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life (in years)	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life (in years)	10 years

Significant accounting polici_7

Significant accounting policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2021
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	5 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years

Business combinations - Narrati

Business combinations - Narrative (Details) - USD ($) $ in Thousands	May 28, 2021	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Bargain purchase gain		$ 5,856	$ 0
Revenue		312,412	252,497
Net income (loss) for the year		13,658	$ (7,359)
Stako
Business Acquisition [Line Items]
Purchase price	$ 7,130
Bargain purchase gain	$ 5,856
Revenue		13,791
Net income (loss) for the year		$ 1,601

Business combinations - Purchas

Business combinations - Purchase Price Allocation (Details) - USD ($) $ in Thousands	May 28, 2021	Dec. 31, 2021	Dec. 31, 2020
Purchase Price Allocation
Bargain purchase gain		$ (5,856)	$ 0
Stako
Purchase Price Allocation
Cash and cash equivalents	$ 1,180
Accounts receivable	5,609
Inventory	4,217
Property, plant and equipment	6,435
Other assets	319
Accounts payable and accrued liabilities (4)	(4,678)
Deferred income tax liabilities	(96)
Total net identifiable assets	12,986
Bargain purchase gain	(5,856)
Total consideration	$ 7,130

Business combinations - Pro For

Business combinations - Pro Forma Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Revenue	$ 312,412	$ 252,497
Net income (loss) for the year	13,658	(7,359)
Pro Forma
Business Acquisition [Line Items]
Revenue	312,412	252,497
Proforma revenue for the period	322,629	271,760
Net income (loss) for the year	13,658	(7,359)
Proforma adjustments	(5,377)	0
Adjusted proforma net income (loss) for the period	9,003	(6,099)
Stako
Business Acquisition [Line Items]
Revenue	13,791
Net income (loss) for the year	1,601
Stako | Pro Forma
Business Acquisition [Line Items]
Revenue	10,217	19,263
Net income (loss) for the year	$ 722	$ 1,260

Accounts receivable (Details)

Accounts receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Customer trade receivables	$ 90,324	$ 80,972
Other receivables	14,504	14,967
Income tax receivable	872	52
Due from related parties	1,651	1,070
Allowance for credit losses	(5,843)	(6,594)
Accounts receivable, net	$ 101,508	$ 90,467

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Purchased parts and materials	$ 62,896	$ 36,066
Work-in-process	3,681	3,203
Finished goods	16,551	12,133
Inventory Net	$ 83,128	$ 51,402

Inventories - Narrative (Detail

Inventories - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Inventory write-downs to net realizable value	$ 914	$ 507

Assets held for sale - CWI Narr

Assets held for sale - CWI Narrative (Details) - USD ($) $ in Thousands	Feb. 07, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity method investment, profit sharing percentage		75.00%
Assets		$ 471,313	$ 346,263
Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Equity method investment, profit sharing percentage		25.00%
Assets		$ 146,778	122,921
Cummins Westport, Inc. | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of interest	$ 22,200
Proceeds from sale of intellectual property	20,000
Proceeds received net of holdback	31,445
Purchase agreement holdback	$ 10,800
Other Noncurrent Assets | Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Assets		22,039	10,866
Other Current Assets | Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Assets		58	74
Sales To Related Party | Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Expense recovery		$ 791	$ 1,611

Assets held for sale - CWI Inco

Assets held for sale - CWI Income and Received Dividends (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investment income from CWI	$ 33,741	$ 24,047
Dividends received	21,796	20,758
Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Investment income from CWI	32,969	23,774
Dividends received	$ 21,796	$ 20,758

Assets held for sale - CWI Carr

Assets held for sale - CWI Carrying Amount and Maximum Exposure (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Carrying amount	$ 471,313	$ 346,263
Cummins Westport, Inc.
Schedule of Equity Method Investments [Line Items]
Carrying amount	146,778	122,921
Cummins Westport, Inc. | Other Noncurrent Assets
Schedule of Equity Method Investments [Line Items]
Carrying amount	22,039	10,866
Maximum  exposure to loss	22,039	10,866
Cummins Westport, Inc. | Other Current Assets
Schedule of Equity Method Investments [Line Items]
Carrying amount	58	74
Maximum  exposure to loss	$ 58	$ 74

Assets held for sale - Assets,

Assets held for sale - Assets, Liabilities, Revenue and Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and short-term investments	$ 124,892
Accounts receivable	101,508	$ 90,467
Long-term assets:
Property, plant and equipment (note 9)	64,420	57,507
Total assets	471,313	346,263
Current liabilities:
Accounts payable and accrued liabilities	99,238	84,599
Total current liabilities	146,447	147,022
Long-term liabilities:
Other long-term liabilities	5,607	6,017
Total liabilities	234,894	242,204
Revenue	312,412	252,497
Cost of revenue and expenses:
Cost of product and parts revenue	264,260	212,953
Research and development	25,194	20,976
General and administrative	36,290	26,629
Sales and marketing	13,495	11,510
Cost of revenue and expenses	342,958	274,486
Income from operations	5,527	(5,928)
Interest and other income	1,413	2
Income tax expense:
Current	2,172	2,438
Deferred	(10,303)	(1,007)
Income tax expense (recovery)	(8,131)	1,431
Net income (loss) for the year	13,658	(7,359)
Cummins Westport, Inc.
Current assets:
Cash and short-term investments	113,936	94,984
Accounts receivable	9,999	5,681
Long-term assets:
Property, plant and equipment (note 9)	259	605
Deferred income tax assets	22,584	21,651
Total assets	146,778	122,921
Current liabilities:
Accounts payable and accrued liabilities	5,509	5,557
Current portion of warranty liability	26,105	19,485
Current portion of deferred revenue	12,374	13,628
Total current liabilities	43,988	38,670
Long-term liabilities:
Warranty liability	36,267	34,737
Deferred revenue	20,122	23,802
Other long-term liabilities	2,312	3,969
Long-term liabilities	58,701	62,508
Total liabilities	102,689	101,178
Revenue	367,506	323,480
Cost of revenue and expenses:
Cost of product and parts revenue	268,440	236,154
Research and development	6,084	12,185
General and administrative	1,778	1,650
Sales and marketing	12,865	12,567
Cost of revenue and expenses	289,167	262,556
Income from operations	78,339	60,924
Interest and other income	522	1,074
Income before income taxes	78,861	61,998
Income tax expense:
Current	13,857	14,779
Deferred	(933)	(329)
Income tax expense (recovery)	12,924	14,450
Net income (loss) for the year	65,937	47,548
Cummins Westport, Inc. | Product
Long-term liabilities:
Revenue	252,135	219,141
Cummins Westport, Inc. | Parts
Long-term liabilities:
Revenue	$ 115,371	$ 104,339

Long-term investments - Schedul

Long-term investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Long-term investments (note 8)	$ 3,824	$ 3,088
Weichai Westport, Inc.
Schedule of Investments [Line Items]
Long-term investments (note 8)	1,824	1,824
Minda Emer Technologies Limited
Schedule of Investments [Line Items]
Long-term investments (note 8)	1,852	1,116
Other equity accounted investees
Schedule of Investments [Line Items]
Long-term investments (note 8)	$ 148	$ 148

Long-term investments - Narrati

Long-term investments - Narrative (Details) - Weichai Westport, Inc.	1 Months Ended	12 Months Ended
	Apr. 30, 2016	Dec. 31, 2021
Cartesian Capital Group
Schedule of Investments [Line Items]
Percentage of ownership after transaction	18.78%
Subsidiaries | Westport HK
Schedule of Investments [Line Items]
Percentage of ownership after transaction		23.33%
Parent Company | Westport HK
Schedule of Investments [Line Items]
Percentage of ownership after transaction		4.55%

Property, plant and equipment -

Property, plant and equipment - Schedule of PPE (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Cost	$ 150,012	$ 132,629
Accumulated depreciation	85,592	75,122
Property, plant and equipment	64,420	57,507
Land and buildings
Property, Plant and Equipment [Line Items]
Cost	8,843	5,303
Accumulated depreciation	1,883	1,701
Property, plant and equipment	6,960	3,602
Land and buildings | Stako
Property, Plant and Equipment [Line Items]
Cost	4,155
Computer equipment and software
Property, Plant and Equipment [Line Items]
Cost	7,965	7,045
Accumulated depreciation	6,054	5,570
Property, plant and equipment	1,911	1,475
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Cost	6,223	4,968
Accumulated depreciation	5,149	4,148
Property, plant and equipment	1,074	820
Furniture and fixtures | Stako
Property, Plant and Equipment [Line Items]
Cost	75
Machinery and equipment
Property, Plant and Equipment [Line Items]
Cost	113,479	102,834
Accumulated depreciation	62,320	54,387
Property, plant and equipment	51,159	48,447
Machinery and equipment | Stako
Property, Plant and Equipment [Line Items]
Cost	2,205
Leasehold improvements
Property, Plant and Equipment [Line Items]
Cost	13,502	12,479
Accumulated depreciation	10,186	9,316
Property, plant and equipment	$ 3,316	$ 3,163

Property, plant and equipment_2

Property, plant and equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Impairment on long-lived assets, net (note 9)	$ 459	$ 479
Impairment of PPE		479
Depreciation	12,437	12,288
Depreciation in cost of sales	$ 8,645	$ 7,795

Intangible assets - Finite-live

Intangible assets - Finite-lived Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Cost	$ 36,904	$ 41,514
Accumulated amortization	27,618	29,730
Net book value	9,286	11,784
Patents and trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	20,748	21,763
Accumulated amortization	11,823	11,513
Net book value	8,925	10,250
Technology
Finite-Lived Intangible Assets [Line Items]
Cost	4,202	6,040
Accumulated amortization	3,894	5,613
Net book value	308	427
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Cost	11,954	13,234
Accumulated amortization	11,901	12,283
Net book value	$ 53	951
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Cost		477
Accumulated amortization		321
Net book value		$ 156

Intangible assets - Narrative (

Intangible assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization of intangible assets	$ 1,598	$ 1,746

Goodwill - Schedule of Goodwill

Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Balance, beginning of year	$ 3,397	$ 3,110
Impact of foreign exchange changes	(276)	287
Balance, end of year	$ 3,121	$ 3,397

Goodwill - Narrative (Details)

Goodwill - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 3,121	$ 3,397	$ 3,110

Accounts payable and accrued _3

Accounts payable and accrued liabilities - Schedule of AP and Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts Payable and Accrued Liabilities, Current [Abstract]
Trade accounts payable	$ 73,388	$ 57,307
Accrued payroll	16,591	14,737
Accrued interest	0	137
Taxes payable	4,621	3,905
Deferred revenue	3,503	8,008
Other payables	1,135	505
Total accounts payable and accrued liabilities	$ 99,238	$ 84,599

Operating leases right-of-use_3

Operating leases right-of-use assets - Narrative (Details)	Dec. 31, 2021
Leases [Abstract]
Remaining lease term	5 years
Weighted average discount rate	3.00%

Operating leases right-of-use_4

Operating leases right-of-use assets - Components of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Amortization of right-of-use assets	$ 3,620	$ 3,874
Interest	891	813
Total lease cost	$ 4,511	$ 4,687

Operating leases right-of-use_5

Operating leases right-of-use assets - Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2022	$ 4,190
2023	3,499
2024	3,088
2025	2,549
2026	2,048
Thereafter	17,449
Total undiscounted cash flows	32,823
Less: imputed interest	(4,271)
Present value of operating lease liabilities	28,552
Less: current portion	(4,190)	$ (4,476)
Long term operating lease liabilities	$ 24,362	$ 23,486

Short-term debt (Details)

Short-term debt (Details) - USD ($)	Sep. 15, 2021	Jul. 23, 2020	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Short-term debt (note 14)			$ 12,965,000	$ 23,445,000
HSBC Revolving Financing Facility | Senior financing
Short-term Debt [Line Items]
Short-term debt (note 14)			12,965,000	17,428,000
Maximum draw amount			$ 20,000,000
HSBC Revolving Financing Facility | Senior financing | London Interbank Offered Rate (LIBOR)
Short-term Debt [Line Items]
Basis spread on variable rate debt			2.50%
HSBC Revolving Financing Facility | Senior financing | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Short-term Debt [Line Items]
Basis spread on variable rate debt			2.66%
HSBC Revolving Financing Facility | Senior financing | Eurodollar
Short-term Debt [Line Items]
Basis spread on variable rate debt			2.50%
EDC Non-revolving Term Credit Facility | Line of Credit
Short-term Debt [Line Items]
Short-term debt (note 14)			$ 0	$ 6,017,000
Maximum draw amount		$ 10,000,000
Credit facility term		1 year
Deferred principal payment	$ 6,000,000
EDC Non-revolving Term Credit Facility | Line of Credit | Prime Rate
Short-term Debt [Line Items]
Basis spread on variable rate debt		3.00%

Long-term debt - Schedule of De

Long-term debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total Gross Debt	$ 56,402	$ 61,953
Current portion	(11,277)	(16,302)
Long-term portion	45,125	45,651
Convertible debt
Debt Instrument [Line Items]
Total Gross Debt	0	4,362
Other bank financing
Debt Instrument [Line Items]
Total Gross Debt	1,231	1,325
Capital lease obligations
Debt Instrument [Line Items]
Total Gross Debt	1,655	2,535
Term loan facilities
Debt Instrument [Line Items]
Total Gross Debt	$ 53,516	$ 53,731

Long-term debt - Narrative (Det

Long-term debt - Narrative (Details) - USD ($)

Dec. 13, 2021

Aug. 31, 2021

Apr. 29, 2021

Jan. 21, 2021

Jul. 24, 2020

Nov. 28, 2019

Oct. 09, 2018

Dec. 31, 2020

Dec. 31, 2021

Aug. 11, 2020

Jul. 23, 2020

Jul. 17, 2020

May 20, 2020

Feb. 28, 2019

Dec. 20, 2017

Jan. 11, 2016

Debt Instrument [Line Items]

Debt and capital lease obligations

$ 61,953,000

$ 56,402,000

Debt term extension

3 years

Term Loan | EDC Loan

Debt Instrument [Line Items]

Long-term debt

$ 20,000,000

Debt issuance costs

$ 300,000

Convertible debt | Convertible unsecured notes due June 1, 2021

Debt Instrument [Line Items]

Long-term debt

$ 10,000,000

$ 17,500,000

Interest rate (percent)

6.50%

9.00%

9.00%

Conversion price (dollars per share)

$ 1.42

$ 2.17

$ 2.17

Converted amount

$ 2,500,000

$ 2,500,000

5,000,000

Converted shares

1,836,750

1,815,117

Capital lease obligations

Debt Instrument [Line Items]

Debt and capital lease obligations

2,535,000

$ 1,655,000

Minimum

Debt Instrument [Line Items]

Capital lease obligation interest rates

1.30%

Capital lease term

2 years

Minimum | Other bank financing

Debt Instrument [Line Items]

Interest rate (percent)

0.75%

Maximum

Debt Instrument [Line Items]

Capital lease obligation interest rates

5.70%

Capital lease term

5 years

Maximum | Other bank financing

Debt Instrument [Line Items]

Interest rate (percent)

3.80%

Secured Debt

Debt Instrument [Line Items]

Debt and capital lease obligations

53,731,000

$ 53,516,000

Secured Debt | EDC Loan

Debt Instrument [Line Items]

Long-term debt

$ 20,000,000

Debt issuance costs

$ 1,013,000

Interest rate (percent)

6.00%

9.00%

Debt and capital lease obligations

13,618,000

$ 18,583,000

Secured Debt | UniCredit Loan

Debt Instrument [Line Items]

Debt and capital lease obligations

$ 8,803,000

7,246,000

8,470,000

Secured Debt | Third UniCredit Loan

Debt Instrument [Line Items]

Debt and capital lease obligations

5,558,000

4,000,000

Effective rate on debt

1.82%

Secured Debt | Fourth UniCredit Loan

Debt Instrument [Line Items]

Debt and capital lease obligations

18,650,000

15,335,000

Effective rate on debt

1.75%

Secured Debt | Deutsche Bank Euro Loan

Debt Instrument [Line Items]

Debt and capital lease obligations

$ 8,659,000

$ 7,128,000

Effective rate on debt

1.70%

Prime Rate | Term Loan | EDC Loan

Debt Instrument [Line Items]

Basis spread on variable rate debt

2.01%

Euribor | Secured Debt | UniCredit Loan

Debt Instrument [Line Items]

Basis spread on variable rate debt

1.65%

2.30%

Euribor | Secured Debt | Second UniCredit Loan

Debt Instrument [Line Items]

Basis spread on variable rate debt

1.80%

Long-term debt - Schedule of Ma

Long-term debt - Schedule of Maturities on Senior Financing (Details) $ in Thousands	Dec. 31, 2021USD ($)
Debt Instrument [Line Items]
2022	$ 11,261
2023	12,042
2024	12,730
2025	11,973
2026 and thereafter	8,396
Long-term debt	56,402
Other bank financing
Debt Instrument [Line Items]
2022	687
2023	0
2024	136
2025	136
2026 and thereafter	272
Long-term debt	1,231
Capital lease obligations
Debt Instrument [Line Items]
2022	517
2023	460
2024	427
2025	228
2026 and thereafter	23
Long-term debt	1,655
Term loan facilities
Debt Instrument [Line Items]
2022	10,057
2023	11,582
2024	12,167
2025	11,609
2026 and thereafter	8,101
Long-term debt	$ 53,516

Long-term royalty payable - Con

Long-term royalty payable - Continuity Schedule of Long-term Royalty Payable (Details) - USD ($)	1 Months Ended	12 Months Ended		60 Months Ended
	Jan. 31, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Jan. 11, 2016
Long-Term Debt [Roll Forward]
Current portion		$ (5,200,000)	$ (7,451,000)	$ (5,200,000)
Long-term portion		4,747,000	8,591,000	4,747,000
Royalty agreement
Long-Term Debt [Roll Forward]
Balance, beginning of year		16,042,000	18,258,000
Accretion expense		1,356,000	3,732,000
Repayment		(7,451,000)	(5,948,000)
Balance, end of year		9,947,000	16,042,000	9,947,000
Current portion		(5,200,000)	(7,451,000)	(5,200,000)
Long-term portion		$ 4,747,000	$ 8,591,000	4,747,000
Cartesian Capital Group
Long-Term Debt [Roll Forward]
Annual royalties, percent of annual revenue (equal to or greater of)	15.00%
Cumulative royalties threshold for royalty payment	$ 15,000
Cartesian Capital Group | Royalty agreement
Long-Term Debt [Roll Forward]
Repayment				$ (11,912,000)
Cartesian Capital Group | Loans payable | Tranche I Financing
Long-Term Debt [Roll Forward]
Finance agreement amount					$ 17,500,000
Effective rate on debt					23.00%

Long-term royalty payable - Min

Long-term royalty payable - Minimum Repayments (Details) $ in Thousands	Dec. 31, 2021USD ($)
Minimum repayments including interest for royalties payable
2022	$ 11,261
2023	12,042
2024	12,730
2025	11,973
Long-term debt	56,402
Royalty agreement
Minimum repayments including interest for royalties payable
2022	5,200
2023	1,320
2024	1,848
2025	2,270
2026	2,851
Long-term debt	$ 13,489

Warranty liability (Details)

Warranty liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance, beginning of year	$ 18,936	$ 8,901
Warranty claims	(5,322)	(6,906)
Warranty accruals	7,025	16,191
Change in estimate	(337)	(291)
Impact of foreign exchange changes	(1,511)	1,041
Balance, end of year	18,791	18,936
Current portion	(13,577)	(10,749)
Long-term portion	5,214	$ 8,187
Product Warranty Liability [Line Items]
Warranty accrual related to field service campaign	11,224
Insurance recovery	8,865
Other receivables
Product Warranty Liability [Line Items]
Insurance recovery	3,521
Warranty accrual related to field service campaign	655
Other long-term asset
Product Warranty Liability [Line Items]
Insurance recovery	5,344
Warranty accrual related to field service campaign	$ 6,931

Share capital, stock options _3

Share capital, stock options and other stock-based plans - Narrative (Details) - USD ($)	Aug. 31, 2021	Jun. 08, 2021	Jan. 21, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 20, 2021	Dec. 31, 2021	Dec. 31, 2020	Nov. 09, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Transaction costs		$ 7,194,000
Price per share (in dollars per share)		$ 5.50
Issuance of common shares on at-the-market public offering, net of costs incurred		$ 115,115,000					$ 120,727,000	$ 13,904,000
Compensation expense							1,911,000	2,368,000
Convertible debt | Convertible unsecured notes due June 1, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted amount	$ 2,500,000		$ 2,500,000		$ 5,000,000
Converted shares	1,836,750		1,815,117
ATM Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized issuance of common shares from treasury to public (up to)									50,000,000
Issuance of common shares from treasury to public				1,819,712
Gross proceeds from issuance of shares				$ 13,211,000		$ 27,586,000
Transaction costs				405,000
Commission costs				264,000
Net proceeds from issuance of shares				$ 12,806,000
ATM Program | Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average share price (in dollars per share)				$ 7.26
Public Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common shares on at-the-market public offering, net of costs incurred							107,921,000
Over-Allotment Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common shares on at-the-market public offering, net of costs incurred (in shares)		2,730,000
Share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense							$ 1,911,000	$ 2,368,000
Granted (in shares)							875,703	525,807
Compensation cost not yet recognized							$ 2,709,000
Compensation cost not yet recognized, period for recognition (in years)							2 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)							417,719	504,907
Vesting period (in years)							3 years
PSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)							457,984	20,900
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common shares on at-the-market public offering, net of costs incurred (in shares)								3,215,970
Issuance of common shares on at-the-market public offering, net of costs incurred								$ 13,904,000
Issuance of common shares on exercise of share units (in shares)							327,774	829,553
Common stock | Public Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common shares on at-the-market public offering, net of costs incurred (in shares)							20,930,000
Issuance of common shares on at-the-market public offering, net of costs incurred							$ 107,921,000

Share capital, stock options _4

Share capital, stock options and other stock-based plans - Share units (Details) - Share units - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Number of units
Outstanding, beginning of period (in shares)	1,452,378	1,777,941
Granted (in shares)	875,703	525,807
Exercised/Vested (in shares)	(327,774)	(829,553)
Forfeited/expired (in shares)	(133,874)	(21,817)
Outstanding, end of period (in shares)	1,866,433	1,452,378
Units outstanding and exercisable, end of period (in shares)	61,086	22,588
Weighted average grant date fair value (CDN $)
Outstanding, beginning of period (in Canadian dollars per share)	$ 3.29	$ 3.19
Granted (in Canadian dollars per share)	4.87	2.09
Exercised/Vested (in Canadian dollars per share)	3.86	2.31
Forfeited/expired (in Canadian dollars per share)	1.62	3.37
Outstanding, end of period (in Canadian dollars per share)	2.98	3.29
Units outstanding and exercisable, end of period (in Canadian dollars per share)	$ 2.84	$ 5.69

Share capital, stock options _5

Share capital, stock options and other stock-based plans - Aggregate intrinsic values (Details) - Share units - CAD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding	$ 5,434	$ 9,787
Exercisable	$ 173	$ 153

Share capital, stock options _6

Share capital, stock options and other stock-based plans - Stock-based compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	$ 1,911	$ 2,368
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	91	140
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	217	365
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	1,502	1,621
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	$ 101	$ 242

Income taxes - Narrative (Detai

Income taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Effective federal rate	27.00%	27.00%
Unrecognized tax benefit	$ 5,152	$ 3,852

Income taxes - Effective Income

Income taxes - Effective Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ 5,527	$ (5,928)
Expected income tax expense (recovery)	1,492	(1,601)
Increase (reduction) in income taxes resulting from:
Non-deductible stock-based compensation	389	244
Other permanent differences	4,559	3,819
Withholding taxes and other foreign taxes	76	804
Change in enacted tax rates	61	(189)
Foreign tax rate differences, foreign exchange and other adjustments	457	(1,177)
Non-taxable income from equity investment	(8,902)	(6,418)
Change in valuation allowance	2,970	5,949
Bargain purchase gain	(1,579)	0
Tax realignment due to Italian tax law changes	(7,654)	0
Income tax expense (recovery)	$ (8,131)	$ 1,431

Income taxes - Deferred Tax Ass

Income taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets:
Net loss carry forwards	$ 223,129	$ 218,323
Intangible assets	4,571	4,629
Property, plant and equipment	18,225	17,155
Warranty liability	4,785	4,752
Foreign tax credits	620	620
Inventory	1,614	1,631
Research and development	7,537	6,316
Tax realignment due to Italian tax law changes	8,705	0
Other	10,858	10,592
Total gross deferred income tax assets	280,044	264,018
Valuation allowance	(268,391)	(261,878)
Total deferred income tax assets	11,653	2,140
Deferred income tax liabilities:
Intangible assets	(430)	(430)
Property, plant and equipment	(12)	(22)
Other	(2,950)	(2,798)
Total deferred income tax liabilities	(3,392)	(3,250)
Total net deferred income tax assets (liabilities)	$ 8,261
Total net deferred income tax assets (liabilities)		$ (1,110)

Income taxes - Components of Ta

Income taxes - Components of Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Income (loss) before income taxes	$ 5,527	$ (5,928)
Current	2,172	2,438
Deferred	(10,303)	(1,007)
Income tax expense (recovery)	(8,131)	1,431
Italy
Income Taxes [Line Items]
Income (loss) before income taxes	921	5,244
Current	1,417	2,007
Deferred	(10,373)	(1,146)
Income tax expense (recovery)	(8,956)	861
United States
Income Taxes [Line Items]
Income (loss) before income taxes	31,476	21,400
Current	(3)	(274)
Deferred	0	0
Income tax expense (recovery)	(3)	(274)
Canada
Income Taxes [Line Items]
Income (loss) before income taxes	(35,809)	(31,429)
Current	69	80
Deferred	0	0
Income tax expense (recovery)	69	80
Other
Income Taxes [Line Items]
Income (loss) before income taxes	8,939	(1,143)
Current	689	625
Deferred	70	139
Income tax expense (recovery)	$ 759	$ 764

Income taxes - Expiration of Lo

Income taxes - Expiration of Loss Carry-forwards (Details) $ in Thousands	Dec. 31, 2021USD ($)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 755,419
2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3,966
2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,660
2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,030
2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	748,763
Canada
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	619,313
Canada | 2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Canada | 2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Canada | 2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Canada | 2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	619,313
Italy
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3,254
Italy | 2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Italy | 2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Italy | 2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Italy | 2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3,254
United States
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	97,233
United States | 2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
United States | 2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
United States | 2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
United States | 2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	97,233
Sweden
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	13,241
Sweden | 2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Sweden | 2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Sweden | 2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
Sweden | 2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	13,241
Other
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	22,378
Other | 2022
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3,966
Other | 2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,660
Other | 2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,030
Other | 2025 and later
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 15,722

Related party transactions (Det

Related party transactions (Details) - Minda Westport Technologies Limited - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Due from related parties	$ 1,593	$ 996
Sales	$ 2,232	$ 1,927

Segment information - Narrative

Segment information - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)segment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	3
Revenue	$ 312,412	$ 252,497
Goodwill	3,121	3,397	$ 3,110
Long-term investments	3,824	3,088
OEM
Segment Reporting Information [Line Items]
Revenue	49,683	51,580
Long-term investments	$ 1,852	$ 1,116
OEM | Revenue from Contract with Customer, Segment Benchmark | Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration percentage	16.00%	20.00%
IAM
Segment Reporting Information [Line Items]
Goodwill	$ 3,121	$ 3,397
Corporate
Segment Reporting Information [Line Items]
Long-term investments	$ 1,972	$ 1,972

Segment information - Financial

Segment information - Financial information by business segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 312,412	$ 252,497
Operating income (loss)	(30,546)	(21,989)
Depreciation & amortization	14,035	14,034
Income from investments accounted for by the equity method	33,741	24,047
OEM
Segment Reporting Information [Line Items]
Revenue	49,683	51,580
OEM | Operating Segments
Segment Reporting Information [Line Items]
Revenue	195,476	149,632
Operating income (loss)	(22,259)	(21,214)
Depreciation & amortization	8,654	8,225
Income from investments accounted for by the equity method	773	273
IAM | Operating Segments
Segment Reporting Information [Line Items]
Revenue	116,936	102,865
Operating income (loss)	2,046	6,624
Depreciation & amortization	5,113	5,562
Income from investments accounted for by the equity method	0	0
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenue	0	0
Operating income (loss)	(10,333)	(7,399)
Depreciation & amortization	268	247
Income from investments accounted for by the equity method	$ 32,968	$ 23,774

Segment information - Assets (D

Segment information - Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total additions to long-lived assets, excluding business combinations:	$ 14,158	$ 7,123
Operating Segments | OEM
Segment Reporting Information [Line Items]
Total additions to long-lived assets, excluding business combinations:	9,878	2,477
Operating Segments | IAM
Segment Reporting Information [Line Items]
Total additions to long-lived assets, excluding business combinations:	2,493	3,403
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Total additions to long-lived assets, excluding business combinations:	$ 1,787	$ 1,243

Segment information - Percent o

Segment information - Percent of revenue by geographical location (Details) - Geographic Concentration Risk - Revenue, Product and Service Benchmark	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Europe
Segment Reporting Information [Line Items]
Concentration percentage	66.00%	70.00%
Americas
Segment Reporting Information [Line Items]
Concentration percentage	11.00%	13.00%
Asia
Segment Reporting Information [Line Items]
Concentration percentage	12.00%	9.00%
Africa
Segment Reporting Information [Line Items]
Concentration percentage	7.00%	3.00%
Other
Segment Reporting Information [Line Items]
Concentration percentage	4.00%	5.00%

Segment Information - Total ass

Segment Information - Total asset allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 471,313	$ 346,263
Operating Segments | OEM
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	193,928	148,959
Operating Segments | IAM
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	148,745	156,967
Operating Segments | Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 128,640	$ 40,337

Segment information - Assets by

Segment information - Assets by geographic area (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated property, plant and equipment	$ 64,420	$ 57,507
Total consolidated intangible assets	12,407	15,181
Total consolidated long-lived assets	76,827	72,688
Italy
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant and equipment	21,140	24,490
Intangible assets and goodwill	9,131	11,613
Long-lived assets including equity method investments	30,271	36,103
Canada
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant and equipment	29,095	28,557
Intangible assets and goodwill	155	171
Long-lived assets including equity method investments	29,250	28,728
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant and equipment	0	719
Intangible assets and goodwill	0	0
Long-lived assets including equity method investments	0	719
Rest of Europe
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant and equipment	9,480	3,713
Intangible assets and goodwill	3,121	3,397
Long-lived assets including equity method investments	12,601	7,110
Asia Pacific
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant and equipment	4,705	633
Intangible assets and goodwill	0	0
Long-lived assets including equity method investments	$ 4,705	$ 633

Financial instruments - Narrati

Financial instruments - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Cash and short-term investments	$ 124,892
Restricted cash	104	$ 75
Impact on income from 5% change in U.S. dollar against foreign currency	1,851
Impact on net loss from a 50 basis point change in interest rates	$ 694
Accounts receivable | Customer receivable | Credit concentration risk
Other Commitments [Line Items]
Percent of A/R	83.00%	83.00%
Accounts receivable | Government grants receivable | Credit concentration risk
Other Commitments [Line Items]
Percent of A/R	17.00%	17.00%
Minimum
Other Commitments [Line Items]
A/R period	30 days
Maximum
Other Commitments [Line Items]
A/R period	90 days

Financial instruments - Financi

Financial instruments - Financial Obligations (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Other Commitments [Line Items]
Carrying amount	$ 207,104
Contractual cash flows	220,991
Contractual obligation, due less than 1 year	135,059
Contractual obligation, due 1-3 years	39,763
Contractual obligation, due 4-5 years	28,047
Contractual obligation, due after 5 years	18,122
Secured Debt
Other Commitments [Line Items]
Carrying amount	53,516
Contractual cash flows	59,514
Contractual obligation, due less than 1 year	12,189
Contractual obligation, due 1-3 years	26,713
Contractual obligation, due 4-5 years	20,075
Contractual obligation, due after 5 years	537
Other bank financing
Other Commitments [Line Items]
Carrying amount	1,231
Contractual cash flows	1,236
Contractual obligation, due less than 1 year	690
Contractual obligation, due 1-3 years	137
Contractual obligation, due 4-5 years	273
Contractual obligation, due after 5 years	136
Capital lease obligations
Other Commitments [Line Items]
Carrying amount	1,655
Contractual cash flows	1,726
Contractual obligation, due less than 1 year	587
Contractual obligation, due 1-3 years	888
Contractual obligation, due 4-5 years	251
Contractual obligation, due after 5 years	0
Long-term royalty payable
Other Commitments [Line Items]
Carrying amount	9,947
Contractual cash flows	13,489
Contractual obligation, due less than 1 year	5,200
Contractual obligation, due 1-3 years	5,438
Contractual obligation, due 4-5 years	2,851
Contractual obligation, due after 5 years
Operating lease commitments
Other Commitments [Line Items]
Carrying amount	28,552
Contractual cash flows	32,823
Contractual obligation, due less than 1 year	4,190
Contractual obligation, due 1-3 years	6,587
Contractual obligation, due 4-5 years	4,597
Contractual obligation, due after 5 years	17,449
Accounts payable and accrued liabilities
Other Commitments [Line Items]
Carrying amount	99,238
Contractual cash flows	99,238
Contractual obligation, due less than 1 year	99,238
Contractual obligation, due 1-3 years	0
Contractual obligation, due 4-5 years	0
Contractual obligation, due after 5 years	0
Short-term debt (note 14)
Other Commitments [Line Items]
Carrying amount	12,965
Contractual cash flows	12,965
Contractual obligation, due less than 1 year	12,965
Contractual obligation, due 1-3 years	0
Contractual obligation, due 4-5 years	0
Contractual obligation, due after 5 years	$ 0