$ALTR
Altair Engineering Inc. Stock $altr

$altr Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000156459022007651 Filed on February 28, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$140.8M	$532.2M	$133.4M
YoY Change	5.54%	13.25%	7.69%
Cost Of Revenue	$32.64M	$128.6M	$32.70M
YoY Change	-0.19%	6.05%	-11.62%
Gross Profit	$108.2M	$403.5M	$100.8M
YoY Change	7.3%	15.75%	15.96%
Gross Profit Margin	76.82%	75.83%	75.56%
Selling, General & Admin	$61.70M	$221.9M	$53.50M
YoY Change	15.33%	12.16%	9.41%
% of Gross Profit	57.04%	55.0%	53.08%
Research & Development	$38.18M	$149.3M	$35.00M
YoY Change	9.08%	18.44%	14.75%
% of Gross Profit	35.3%	37.0%	34.72%
Depreciation & Amortization	$6.289M	$25.64M	$6.890M
YoY Change	-8.72%	7.72%	21.3%
% of Gross Profit	5.81%	6.35%	6.84%
Operating Expenses	$103.4M	$386.1M	$93.40M
YoY Change	10.66%	14.62%	12.94%
Operating Profit	$4.806M	$17.39M	$7.400M
YoY Change	-35.05%	48.48%	78.36%
Interest Expense	-$2.228M	$12.07M	-$3.000M
YoY Change	-25.73%	4.03%	7.14%
% of Operating Profit	-46.36%	69.37%	-40.54%
Other Income/Expense, Net	$266.0K	-$562.0K	$100.0K
YoY Change	166.0%	-129.32%	-88.89%
Pretax Income	$2.685M	-$288.0K	$4.400M
YoY Change	-38.98%	-114.17%	100.0%
Income Tax	$4.082M	$8.506M	$2.200M
% Of Pretax Income	152.03%		50.0%
Net Earnings	-$1.397M	-$8.794M	$2.200M
YoY Change	-163.5%	-16.25%	-246.47%
Net Earnings / Revenue	-0.99%	-1.65%	1.65%
Basic Earnings Per Share		-$0.12
Diluted Earnings Per Share	-$17.68K	-$115.4K	$29.73K
COMMON SHARES
Basic Shares Outstanding		76.18M
Diluted Shares Outstanding		76.18M

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$413.7M	$413.7M	$241.2M
YoY Change	71.54%	71.54%	8.11%
Cash & Equivalents	$413.7M	$413.7M	$241.2M
Short-Term Investments
Other Short-Term Assets	$27.53M	$25.23M	$21.10M
YoY Change	30.47%	19.57%	23.39%
Inventory
Prepaid Expenses
Receivables	$137.6M	$139.9M	$117.9M
Other Receivables	$9.388M	$9.388M	$6.700M
Total Short-Term Assets	$588.2M	$588.2M	$386.9M
YoY Change	52.02%	52.03%	9.78%
LONG-TERM ASSETS
Property, Plant & Equipment	$40.48M	$68.97M	$36.33M
YoY Change	11.41%	-1.33%	0.1%
Goodwill	$370.2M		$264.5M
YoY Change	39.96%		13.18%
Intangibles	$99.06M		$76.11M
YoY Change	30.14%		13.48%
Long-Term Investments
YoY Change
Other Assets	$28.35M	$36.85M	$25.39M
YoY Change	11.67%	13.38%	28.83%
Total Long-Term Assets	$575.1M	$575.1M	$443.0M
YoY Change	29.82%	29.81%	13.38%
TOTAL ASSETS
Total Short-Term Assets	$588.2M	$588.2M	$386.9M
Total Long-Term Assets	$575.1M	$575.1M	$443.0M
Total Assets	$1.163B	$1.163B	$829.9M
YoY Change	40.17%	40.17%	11.67%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.647M	$6.647M	$8.594M
YoY Change	-22.66%	-22.71%	0.1%
Accrued Expenses	$71.73M	$71.73M	$58.50M
YoY Change	22.61%	22.61%	13.37%
Deferred Revenue	$93.16M		$85.69M
YoY Change	8.72%		13.6%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$199.9M	$199.9M	$30.40M
YoY Change	557.57%	557.57%	7500.0%
Total Short-Term Liabilities	$474.0M	$474.0M	$200.8M
YoY Change	136.1%	136.04%	31.33%
LONG-TERM LIABILITIES
Long-Term Debt	$146.0K	$146.0K	$188.7M
YoY Change	-99.92%	-99.92%	5.89%
Other Long-Term Liabilities	$42.89M	$59.78M	$27.77M
YoY Change	54.48%	12.58%	4.11%
Total Long-Term Liabilities	$42.89M	$59.93M	$27.77M
YoY Change	54.48%	-75.22%	4.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$474.0M	$474.0M	$200.8M
Total Long-Term Liabilities	$42.89M	$59.93M	$27.77M
Total Liabilities	$549.3M	$549.3M	$450.5M
YoY Change	21.92%	21.93%	16.69%
SHAREHOLDERS EQUITY
Retained Earnings	-$102.1M		-$93.29M
YoY Change	9.43%		13.21%
Common Stock	$724.2M		$474.7M
YoY Change	52.57%		6.28%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$613.2M	$614.0M	$378.6M
YoY Change
Total Liabilities & Shareholders Equity	$1.163B	$1.163B	$829.9M
YoY Change	40.17%	40.17%	11.67%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	-$1.397M	-$8.794M	$2.200M
YoY Change	-163.5%	-16.25%	-246.47%
Depreciation, Depletion And Amortization	$6.289M	$25.64M	$6.890M
YoY Change	-8.72%	7.72%	21.3%
Cash From Operating Activities	$6.029M	$61.62M	$5.500M
YoY Change	9.62%	87.41%	298.55%
INVESTING ACTIVITIES
Capital Expenditures	-$1.038M	$7.849M	-$3.790M
YoY Change	-72.61%	28.82%	146.1%
Acquisitions		$53.98M
YoY Change		31.58%
Other Investing Activities	-$48.53M	$306.0K	-$8.740M
YoY Change	455.3%	-288.89%	-65.07%
Cash From Investing Activities	-$49.57M	-$62.48M	-$12.52M
YoY Change	295.93%	27.28%	-52.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	2.212M	175.9M	560.0K
YoY Change	295.0%	463.03%	-1500.0%
NET CHANGE
Cash From Operating Activities	6.029M	61.62M	5.500M
Cash From Investing Activities	-49.57M	-62.48M	-12.52M
Cash From Financing Activities	2.212M	175.9M	560.0K
Net Change In Cash	-41.33M	172.5M	-6.460M
YoY Change	539.78%	855.48%	-74.38%
FREE CASH FLOW
Cash From Operating Activities	$6.029M	$61.62M	$5.500M
Capital Expenditures	-$1.038M	$7.849M	-$3.790M
Free Cash Flow	$7.067M	$53.77M	$9.290M
YoY Change	-23.93%	100.73%	218.15%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
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CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue
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CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Detroit, Michigan
CY2021	dei	Auditor Firm AuditorFirmId	42
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CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	9388000
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CY2020Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	784000
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
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CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	96992000
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	671000
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	11428000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21522000
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	514000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1259000
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	10829000
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5663000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	44549000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	21355000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8528000
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1502000
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-10350000
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-950000
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-757000
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-118000
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6000
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15645000
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	11032000
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7901000
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	9026000
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2131000
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2396000
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	6682000
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	4527000
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	2591000
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-3857000
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1839000
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-426000
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	7761000
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1985000
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-1232000
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	6365000
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5629000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	615000
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	10111000
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	8280000
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	17426000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	61623000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	32882000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	31393000
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	53983000
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	41028000
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	25720000
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7849000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6093000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9660000
CY2021	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	344000
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2133000
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	473000
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	306000
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-162000
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-14000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-62482000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-49092000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-35839000
CY2021	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	200000000
CY2021	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	30000000
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	127941000
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	4222000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2262000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1710000
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1510000
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-460000
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-537000
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	30000000
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	223101000
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1233000
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-513000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	175947000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	31250000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	191916000
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2623000
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3010000
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	342000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	172465000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	18050000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	187812000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	241547000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	223497000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	35685000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	414012000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	241547000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	223497000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	633000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	731000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	664000
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	9168000
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	12666000
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	7686000
CY2021	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	3690000
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	3504000
CY2019	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	7637000
CY2021	altr	Promissory Notes Issued And Deferred Payment Obligations For Acquisitions PromissoryNotesIssuedAndDeferredPaymentObligationsForAcquisitions	86936000
CY2020	altr	Promissory Notes Issued And Deferred Payment Obligations For Acquisitions PromissoryNotesIssuedAndDeferredPaymentObligationsForAcquisitions	1266000
CY2019	altr	Promissory Notes Issued And Deferred Payment Obligations For Acquisitions PromissoryNotesIssuedAndDeferredPaymentObligationsForAcquisitions	497000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	9000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	118000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	632000
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1056000
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1671000
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	259000
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">1. Description of business </p> <p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Altair Engineering Inc. (“Altair” or the “Company”) is incorporated in the state of Delaware. The Company is a global leader in computational science and artificial intelligence enabling organizations across broad industry segments to drive smarter decisions in an increasingly connected world. Altair deliver’s software and cloud solutions in the areas of simulation, high-performance computing (“HPC”), data analytics, and artificial intelligence (“AI”).<span style="font-family:Calibri;"> </span>Altair’s products and services help create a more sustainable future for the planet. The Company is based in Troy, Michigan.</p> <p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company’s simulation and AI-driven approach to innovation is powered by the Company’s broad portfolio of high-fidelity and high-performance physics solvers, our market leading technology for optimization and HPC, and our end-to-end platform for developing AI and Internet of Things (“IoT”) solutions. The Company’s integrated suite of software optimizes design performance across multiple disciplines encompassing structures, motion, fluids, thermal management, electromagnetics, system modeling, and embedded systems, while also providing AI solutions and true-to-life visualization and rendering.</p> <p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Altair’s software products represent a comprehensive, open architecture solution for simulation, HPC, data analytics, and AI to empower decision making for improved product design and development, manufacturing, energy management and exploration, financial services, health care, and retail operations. Altair believes its products offer a comprehensive set of technologies to design and optimize high-performance, efficient, innovative and sustainable products and processes. </p> <p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Altair also provides Client Engineering Services to support its customers with long-term ongoing product design and development expertise. This has the benefit of embedding the Company within customers, deepening its understanding of their processes, and allowing the Company to more quickly perceive trends in the overall market, helping the Company to better tailor its software products’ research and development and sales initiatives. The Company hires engineers and data scientists for placement at a customer site for specific customer-directed assignments. </p>
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="margin-top:18pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of estimates</p> <p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenue and expenses during the reporting periods. On an ongoing basis, management evaluates its significant estimates including the stand alone selling price, or SSP, for each distinct performance obligation included in customer contracts with multiple performance obligations, <span style="color:#000000;">the incremental borrowing rate used in the valuation of lease liabilities, fair value of convertible senior notes</span>, provision for doubtful accounts, tax valuation allowances, liabilities for uncertain tax provisions, impairment of goodwill and intangible assets, retirement obligations, useful lives of intangible assets, revenue for fixed price contracts, valuation of common stock, and stock-based compensation. Actual results could differ from those estimates.</p>
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2021	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2021	us-gaap	Advertising Expense AdvertisingExpense	4300000
CY2020	us-gaap	Advertising Expense AdvertisingExpense	4000000.0
CY2019	us-gaap	Advertising Expense AdvertisingExpense	4500000
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	78000000.0
CY2021Q4	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P4Y
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	532179000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	469921000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	458915000
CY2021	altr	Percentage Of Net Revenues Through Indirect Channels PercentageOfNetRevenuesThroughIndirectChannels	0.120
CY2020Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	133336
CY2021Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	66664
CY2020	altr	Percentage Of Net Revenues Through Indirect Channels PercentageOfNetRevenuesThroughIndirectChannels	0.112
CY2019	altr	Percentage Of Net Revenues Through Indirect Channels PercentageOfNetRevenuesThroughIndirectChannels	0.098
CY2021	us-gaap	Capitalized Contract Cost Amortization Method CapitalizedContractCostAmortizationMethod	straight-line basis
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	146400000
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	131400000
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.80
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	413743000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	241221000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	269000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	326000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	414012000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	241547000
CY2021Q4	altr	Accounts Receivable Trade Net Current AccountsReceivableTradeNetCurrent	133717000
CY2020Q4	altr	Accounts Receivable Trade Net Current AccountsReceivableTradeNetCurrent	111162000
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	3844000
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	6716000
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	137561000
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	117878000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2500000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2600000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2559000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1415000
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1150000
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	514000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1259000
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	671000
CY2021	altr	Allowance For Doubtful Accounts Receivable Write Offs Net AllowanceForDoubtfulAccountsReceivableWriteOffsNet	-500000
CY2020	altr	Allowance For Doubtful Accounts Receivable Write Offs Net AllowanceForDoubtfulAccountsReceivableWriteOffsNet	-563000
CY2019	altr	Allowance For Doubtful Accounts Receivable Write Offs Net AllowanceForDoubtfulAccountsReceivableWriteOffsNet	-413000
CY2021	altr	Allowance For Doubtful Accounts Foreign Currency Translation Adjustments AllowanceForDoubtfulAccountsForeignCurrencyTranslationAdjustments	-34000
CY2020	altr	Allowance For Doubtful Accounts Foreign Currency Translation Adjustments AllowanceForDoubtfulAccountsForeignCurrencyTranslationAdjustments	60000
CY2019	altr	Allowance For Doubtful Accounts Foreign Currency Translation Adjustments AllowanceForDoubtfulAccountsForeignCurrencyTranslationAdjustments	7000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2539000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2559000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1415000
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	98581000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	89601000
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	58103000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	53269000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	40478000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	36332000
CY2021	us-gaap	Depreciation Depreciation	7300000
CY2020	us-gaap	Depreciation Depreciation	7400000
CY2021Q4	altr	Accrued Obligations For Acquisition Of Businesses AccruedObligationsForAcquisitionOfBusinesses	87636000
CY2020Q4	altr	Accrued Obligations For Acquisition Of Businesses AccruedObligationsForAcquisitionOfBusinesses	1957000
CY2021Q4	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	6047000
CY2020Q4	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	6604000
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	5887000
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	7250000
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	4222000
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	3516000
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	3156000
CY2021Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	2537000
CY2020Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	2009000
CY2021Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1653000
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1366000
CY2021Q4	altr	Accrued Defined Contribution Plan Liabilities Current AccruedDefinedContributionPlanLiabilitiesCurrent	1513000
CY2020Q4	altr	Accrued Defined Contribution Plan Liabilities Current AccruedDefinedContributionPlanLiabilitiesCurrent	1660000
CY2021Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	1459000
CY2020Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	1108000
CY2021Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	7756000
CY2020Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	6294000
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	122226000
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	31404000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	15389000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	8028000
CY2021Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	15086000
CY2020Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	14497000
CY2021Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	12419000
CY2020Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	5242000
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	42894000
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	27767000
CY2021	us-gaap	Restructuring Charges RestructuringCharges	5100000
CY2021Q4	us-gaap	Restructuring And Related Cost Expected Cost Remaining1 RestructuringAndRelatedCostExpectedCostRemaining1	0
CY2021	us-gaap	Restructuring Charges RestructuringCharges	5053000
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1103000
CY2021	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	541000
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1130000
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	2297000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-562000
CY2019Q4	us-gaap	Goodwill Goodwill	233683000
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	25932000
CY2020	altr	Goodwill Effect Of Foreign Currency Translation Gain Loss And Other GoodwillEffectOfForeignCurrencyTranslationGainLossAndOther	4866000
CY2020Q4	us-gaap	Goodwill Goodwill	264481000
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	108772000
CY2021	altr	Goodwill Effect Of Foreign Currency Translation Gain Loss And Other GoodwillEffectOfForeignCurrencyTranslationGainLossAndOther	-3075000
CY2021Q4	us-gaap	Goodwill Goodwill	370178000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	159815000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	159815000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	71658000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	71658000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	88157000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	88157000
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	170715000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	71658000
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	99057000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	119392000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	54408000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	64984000
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	130522000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	54408000
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	76114000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18400000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	16400000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14400000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Rolling Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths	23164000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Rolling Year Two FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearTwo	21472000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Rolling Year Three FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearThree	18881000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Rolling Year Four FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFour	12479000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Rolling Year Five FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFive	9910000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Rolling After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseRollingAfterYearFive	2251000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	88157000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	13754000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	13412000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	13287000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	440000
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	634000
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	525000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	18000
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	32000
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	21000
CY2021	altr	Finance Lease Cost FinanceLeaseCost	458000
CY2020	altr	Finance Lease Cost FinanceLeaseCost	666000
CY2019	altr	Finance Lease Cost FinanceLeaseCost	546000
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	12200000
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	12100000
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	11800000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	28494000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33526000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9933000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	10331000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	19550000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	24323000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	29483000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34654000
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.047
CY2021Q4	altr	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	2532000
CY2020Q4	altr	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	2665000
CY2021Q4	altr	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	2151000
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	868000
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	195000
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	422000
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	146000
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	353000
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	341000
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	775000
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.029
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.031
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	12058000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	11875000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	11355000
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	18000
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	32000
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	46000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	407000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	456000
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	438000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6577000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11713000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11251000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	9000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	118000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	632000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	11255000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8731000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5412000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3418000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2486000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	1542000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	32844000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3361000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	29483000
CY2021Q4	us-gaap	Convertible Debt Fair Value Disclosures ConvertibleDebtFairValueDisclosures	392100000
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	45000000
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	38.11
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.35
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.42
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0180
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	44549000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	21355000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8528000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	27562000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	24159000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	18120000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-288000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2032000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3388000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22882000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9781000
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	23197000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	11880000
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	26000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-881000
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-315000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	446000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	10008000
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-4892000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-6836000
CY2020	altr	Income Tax Reconciliation Effect Of Changes In Tax Laws IncomeTaxReconciliationEffectOfChangesInTaxLaws	4946000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	1827000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	1205000
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	8609000
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	20212000
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5215000
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11434000
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	227000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	193000
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1550000
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-9849000
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1143000
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	22000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	380000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1502000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10350000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-950000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8506000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12532000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10930000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-60000
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	427000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	711000
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2950000
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1161000
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1247000
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-4826000
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	18138000
CY2021	altr	Effective Income Tax Rate Reconciliation Foreign Income Tax Withholding Amount EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingAmount	-4545000
CY2020	altr	Effective Income Tax Rate Reconciliation Foreign Income Tax Withholding Amount EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingAmount	5236000
CY2019	altr	Effective Income Tax Rate Reconciliation Foreign Income Tax Withholding Amount EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingAmount	5975000
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	288000
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	1308000
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	7059000
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	784000
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	-2576000
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2600000
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-12791000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-5034000
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-4628000
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	753000
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	825000
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-768000
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	6058000
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	2175000
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	-1859000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8506000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12532000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10930000
CY2021	altr	Tax Cuts And Jobs Act Of2017 Foreign Income Exemption Criteria Subject To Corporate Tax Rate Minimum Percentage TaxCutsAndJobsActOf2017ForeignIncomeExemptionCriteriaSubjectToCorporateTaxRateMinimumPercentage	0.90
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12217000
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12135000
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	87144000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	66160000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	26035000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	26299000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5011000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3766000
CY2021Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	4408000
CY2020Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	6472000
CY2021Q4	altr	Deferred Tax Assets Lease Obligation DeferredTaxAssetsLeaseObligation	8518000
CY2020Q4	altr	Deferred Tax Assets Lease Obligation DeferredTaxAssetsLeaseObligation	9956000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	6460000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	5980000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	3866000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	2618000
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	153659000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	133386000
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	119981000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	96831000
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	33678000
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	36555000
CY2020Q4	altr	Deferred Tax Liabilities Prepaid Expense Benefit DeferredTaxLiabilitiesPrepaidExpenseBenefit	584000
CY2021Q4	altr	Deferred Tax Liabilities Property Plant And Equipment And Intangibles DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibles	21834000
CY2020Q4	altr	Deferred Tax Liabilities Property Plant And Equipment And Intangibles DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibles	16177000
CY2021Q4	altr	Deferred Tax Liabilities Investment In Consolidated Subsidiary DeferredTaxLiabilitiesInvestmentInConsolidatedSubsidiary	1500000
CY2020Q4	altr	Deferred Tax Liabilities Investment In Consolidated Subsidiary DeferredTaxLiabilitiesInvestmentInConsolidatedSubsidiary	790000
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	8283000
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	9610000
CY2021Q4	altr	Deferred Tax Liabilities Discount On Convertible Notes DeferredTaxLiabilitiesDiscountOnConvertibleNotes	6331000
CY2020Q4	altr	Deferred Tax Liabilities Discount On Convertible Notes DeferredTaxLiabilitiesDiscountOnConvertibleNotes	8685000
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2624000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1612000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	40572000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	37458000
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6894000
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	903000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1849000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	600000
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1934000
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	5862000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2117000
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	25000
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	162000
CY2021	altr	Operating Loss Carryforwards Expiration Date One OperatingLossCarryforwardsExpirationDateOne	2022-Indefinite
CY2021	altr	Tax Credit Carryforward Expiration Date One TaxCreditCarryforwardExpirationDateOne	2027
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	4442000
CY2021Q4	altr	Operating Loss And Tax Credit Carryforwards OperatingLossAndTaxCreditCarryforwards	113179000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8310000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12114000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13743000
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	1042000
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	209000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	50000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	8983000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16376000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8310000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12114000
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	11000000.0
CY2021Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	200000
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000.0
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	500000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3400000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-8794000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-10500000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-7542000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76179000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73241000
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	8700000
CY2021Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15700000
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15200000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	71544000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76179000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73241000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	71544000
CY2021	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.12
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.14
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.11
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4980000
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3123000
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5710000
CY2021	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.80
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1600000
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1600000
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1600000
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3000000.0
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2700000
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1800000
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	400000
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	500000
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	400000
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	10000000.0
CY2021Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	650000
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	657000
CY2021Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	15086000
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	14497000
CY2021Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15736000
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15154000
CY2021Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	3664000
CY2021Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	1654000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	689000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	810000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	768000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	737000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	894000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	4982000
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	1957000
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	179000
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	16000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1762000
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	7281000
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	858000
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-308000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6731000
CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-7056000
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-1199000
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	296000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6153000
CY2021Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	96139000
CY2021Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	7476000
CY2021Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	4047000
CY2021Q4	us-gaap	Purchase Obligation PurchaseObligation	112980000
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	532179000
CY2021	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	85253000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	469921000
CY2020	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	57288000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	458915000
CY2019	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	39549000
CY2021	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	85253000
CY2020	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	57288000
CY2019	altr	Adjusted Earnings Before Interest Taxes Depreciation And Amortization AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization	39549000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	44549000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8528000
CY2021	us-gaap	Restructuring Charges RestructuringCharges	5053000
CY2021	us-gaap	Interest Expense InterestExpense	12065000
CY2020	us-gaap	Interest Expense InterestExpense	11598000
CY2019	us-gaap	Interest Expense InterestExpense	6371000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25644000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	23806000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21522000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	21355000
CY2021	altr	Interest Income And Other InterestIncomeAndOther	1770000
CY2020	altr	Interest Income And Other InterestIncomeAndOther	1503000
CY2019	altr	Interest Income And Other InterestIncomeAndOther	260000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-288000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2032000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3388000
CY2021	altr	Currency Gains On Acquisition Related Intercompany Loans CurrencyGainsOnAcquisitionRelatedIntercompanyLoans	1200000
CY2020	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	1000000.0
CY2020	us-gaap	Severance Costs1 SeveranceCosts1	600000
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	600000
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	400000
CY2019	altr	Impairment Charge Recognized In Adjustment For Royalty Contracts ImpairmentChargeRecognizedInAdjustmentForRoyaltyContracts	1000000.0
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	532179000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	469921000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	458915000
CY2021Q4	altr	Long Lived Assets LongLivedAssets	128635000
CY2020Q4	altr	Long Lived Assets LongLivedAssets	101316000
CY2021	altr	Number Of Customer Accounting For More Than Ten Percent Of Revenues NumberOfCustomerAccountingForMoreThanTenPercentOfRevenues	0
CY2020	altr	Number Of Customer Accounting For More Than Ten Percent Of Revenues NumberOfCustomerAccountingForMoreThanTenPercentOfRevenues	0
CY2019	altr	Number Of Customer Accounting For More Than Ten Percent Of Revenues NumberOfCustomerAccountingForMoreThanTenPercentOfRevenues	0

Files In Submission

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2021 Q4 Form 10-K Financial Statement

#000156459022007651 Filed on February 28, 2022

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$ALTR Altair Engineering Inc. Stock $altr

2021 Q4 Form 10-K Financial Statement

#000156459022007651 Filed on February 28, 2022

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Files In Submission

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Altair Engineering Inc. Stock $altr