$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

$algm Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-K Financial Statement

#000086629122000011 Filed on May 18, 2022

Income Statement

Concept	2022 Q1	2022	2021 Q1
Revenue	$200.3M	$768.7M	$175.1M
YoY Change	14.38%	30.02%	-73.06%
Cost Of Revenue	$90.69M	$361.2M	$88.10M
YoY Change	2.94%	15.66%	-77.34%
Gross Profit	$109.6M	$407.5M	$87.01M
YoY Change	25.97%	46.09%	-66.7%
Gross Profit Margin	54.72%	53.01%	49.69%
Selling, General & Admin	$46.79M	$150.9M	$34.72M
YoY Change	34.75%	-1.65%	-67.33%
% of Gross Profit	42.69%	37.04%	39.91%
Research & Development	$32.43M	$121.9M	$28.14M
YoY Change	15.25%	12.17%	-72.43%
% of Gross Profit	29.59%	29.91%	32.34%
Depreciation & Amortization	$12.01M	$48.53M	$12.08M
YoY Change	-0.6%	0.46%	-75.13%
% of Gross Profit	10.95%	11.91%	13.88%
Operating Expenses	$79.35M	$270.8M	$60.44M
YoY Change	31.3%	1.52%	-71.01%
Operating Profit	$30.25M	$136.7M	$26.57M
YoY Change	13.86%	1023.95%	-49.71%
Interest Expense	$409.0K	-$1.057M	-$2.220M
YoY Change	-118.42%	-59.39%	-273.3%
% of Operating Profit	1.35%	-0.77%	-8.36%
Other Income/Expense, Net	-$502.0K	$4.714M	-$178.0K
YoY Change	182.02%	-1092.42%	-78.58%
Pretax Income	$30.16M	$140.7M	$17.05M
YoY Change	76.87%	-9799.93%	-68.0%
Income Tax	$4.504M	$21.19M	$8.361M
% Of Pretax Income	14.94%	15.06%	49.04%
Net Earnings	$25.62M	$119.4M	$8.644M
YoY Change	196.34%	565.11%	-76.62%
Net Earnings / Revenue	12.79%	15.53%	4.94%
Basic Earnings Per Share		$0.63
Diluted Earnings Per Share	$133.3K	$0.62	$45.48K
COMMON SHARES
Basic Shares Outstanding	189.9M shares	189.7M shares	189.4M shares
Diluted Shares Outstanding		191.8M shares

Balance Sheet

Concept	2022 Q1	2022	2021 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$282.4M	$282.4M	$197.2M
YoY Change	43.19%	43.19%
Cash & Equivalents	$282.4M	$282.4M	$197.2M
Short-Term Investments
Other Short-Term Assets	$22.41M	$22.41M	$51.00M
YoY Change	-56.06%	-56.06%
Inventory	$86.16M	$86.16M	$87.50M
Prepaid Expenses
Receivables	$87.36M	$118.9M	$69.50M
Other Receivables	$1.875M	$1.875M	$0.00
Total Short-Term Assets	$511.7M	$511.7M	$430.6M
YoY Change	18.84%	18.84%	-3.94%
LONG-TERM ASSETS
Property, Plant & Equipment	$210.0M	$226.1M	$192.4M
YoY Change	9.17%	17.51%	-42.11%
Goodwill	$20.01M		$20.11M
YoY Change	-0.48%		1464.67%
Intangibles	$35.97M
YoY Change
Long-Term Investments	$27.67M	$40.02M	$26.66M
YoY Change	3.78%	50.08%
Other Assets	$47.61M	$31.08M	$14.61M
YoY Change	225.8%	-25.26%	65.87%
Total Long-Term Assets	$380.9M	$380.9M	$317.1M
YoY Change	20.12%	20.12%	-14.2%
TOTAL ASSETS
Total Short-Term Assets	$511.7M	$511.7M	$430.6M
Total Long-Term Assets	$380.9M	$380.9M	$317.1M
Total Assets	$892.6M	$892.6M	$747.7M
YoY Change	19.39%	19.39%	-8.58%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$35.06M	$35.06M	$37.74M
YoY Change	-7.11%	-7.11%
Accrued Expenses	$60.43M	$60.43M	$74.68M
YoY Change	-19.09%	-19.09%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00		$0.00
YoY Change			-100.0%
Total Short-Term Liabilities	$104.2M	$104.2M	$116.7M
YoY Change	-10.67%	-10.67%	-22.27%
LONG-TERM LIABILITIES
Long-Term Debt	$25.00M	$25.00M	$25.00M
YoY Change	0.0%	0.0%
Other Long-Term Liabilities	$15.29M	$28.03M	$19.13M
YoY Change	-20.11%	46.52%	20.5%
Total Long-Term Liabilities	$40.29M	$53.03M	$44.13M
YoY Change	-8.72%	20.17%	177.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$104.2M	$104.2M	$116.7M
Total Long-Term Liabilities	$40.29M	$53.03M	$44.13M
Total Liabilities	$157.3M	$158.4M	$160.8M
YoY Change	-2.21%	-2.17%	-12.46%
SHAREHOLDERS EQUITY
Retained Earnings	$123.0M		$3.551M
YoY Change	3362.63%		-98.17%
Common Stock	$1.905M		$1.896M
YoY Change	0.47%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$734.2M	$734.2M	$585.8M
YoY Change
Total Liabilities & Shareholders Equity	$892.6M	$892.6M	$747.7M
YoY Change	19.39%	19.39%	-8.58%

Cashflow Statement

Concept	2022 Q1	2022	2021 Q1
OPERATING ACTIVITIES
Net Income	$25.62M	$119.4M	$8.644M
YoY Change	196.34%	565.11%	-76.62%
Depreciation, Depletion And Amortization	$12.01M	$48.53M	$12.08M
YoY Change	-0.6%	0.46%	-75.13%
Cash From Operating Activities	$37.57M	$156.1M	$57.04M
YoY Change	-34.13%	29.49%	-29.59%
INVESTING ACTIVITIES
Capital Expenditures	-$14.15M	$69.94M	-$14.79M
YoY Change	-4.35%	71.96%	-57.45%
Acquisitions		$14.55M
YoY Change		25.91%
Other Investing Activities	-$1.999M	$3.670M	-$3.052M
YoY Change	-34.5%	-113.31%	-7730.0%
Cash From Investing Activities	-$16.15M	-$66.27M	-$17.85M
YoY Change	-9.51%	-2.89%	-48.62%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00
YoY Change		-100.0%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	902.0K	-$5.307M	4.000K
YoY Change	22450.0%	-92.65%	-99.99%
NET CHANGE
Cash From Operating Activities	37.57M	$156.1M	57.04M
Cash From Investing Activities	-16.15M	-$66.27M	-17.85M
Cash From Financing Activities	902.0K	-$5.307M	4.000K
Net Change In Cash	22.32M	$85.92M	39.20M
YoY Change	-43.05%	-636.99%	-60.32%
FREE CASH FLOW
Cash From Operating Activities	$37.57M	$156.1M	$57.04M
Capital Expenditures	-$14.15M	$69.94M	-$14.79M
Free Cash Flow	$51.72M	$86.19M	$71.83M
YoY Change	-28.0%	7.87%	-37.96%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000866291
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2021Q1	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	25969000	USD
CY2022Q1	us-gaap	Assets Current AssetsCurrent	511692000	USD
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-03-25
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--03-25
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	001-39675
CY2022	dei	Entity Registrant Name EntityRegistrantName	ALLEGRO MICROSYSTEMS, INC.
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-2405937
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	955 Perimeter Road
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Manchester,
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	NH
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	03103
CY2022	dei	City Area Code CityAreaCode	603
CY2022	dei	Local Phone Number LocalPhoneNumber	626-2300
CY2022	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2022	dei	Trading Symbol TradingSymbol	ALGM
CY2022	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2021Q3	dei	Entity Public Float EntityPublicFloat	1900000000	USD
CY2022Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	190500630	shares
CY2022	dei	Auditor Firm AuditorFirmId	248
CY2022	dei	Auditor Name AuditorName	GRANT THORNTON LLP
CY2022	dei	Auditor Location AuditorLocation	Boston, Massachusetts
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CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-475000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-831000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	140746000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-1451000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	53278000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16173000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	37105000	USD
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	148000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	148000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	134000	USD
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	36971000	USD
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.70
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.70
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189748427	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	83448055	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10000000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	191811205	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	176416645	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10000000	shares
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	37105000	USD
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	148000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	148000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	134000	USD
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	36971000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-8110000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	9304000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3153000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-472000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	391000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	233000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1416000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1172000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	543000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6694000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8132000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3696000	USD
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	112713000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	26085000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	33275000	USD
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-111000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	21000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	2000	USD
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	112824000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26064000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	33273000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	589788000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	37105000	USD
CY2020	algm	Adjustments To Additional Paid In Capital Capital Contribution AdjustmentsToAdditionalPaidInCapitalCapitalContribution	9500000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1435000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3153000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	543000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	634132000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	USD
CY2021	algm	Adjustments To Additional Paid In Capital Capitalization Changes AdjustmentsToAdditionalPaidInCapitalCapitalizationChanges	19165000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	49872000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	321425000	USD
CY2021	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-9055000	USD
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27707000	USD
CY2021	algm	Adjustments To Additional Paid In Capital Conversion Of Awards AdjustmentsToAdditionalPaidInCapitalConversionOfAwards	2081000	USD
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	400000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	9304000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1172000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	586871000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	USD
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2832000	USD
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	33437000	USD
CY2022	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	638000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-8110000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1416000	USD
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	735363000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	37105000	USD
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48527000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48307000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	64048000	USD
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	101000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	226000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7498000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18931000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4909000	USD
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	33548000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	49870000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1435000	USD
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	349000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-269000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-698000	USD
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2022	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	2668000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2022	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2000000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2500000	USD
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2022	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2021	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	7119000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2022	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	6297000	USD
CY2021	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	5019000	USD
CY2020	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	3891000	USD
CY2022	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	3722000	USD
CY2021	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	0	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	0	USD
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18347000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9303000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-16441000	USD
CY2021	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	28000	USD
CY2020	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-346000	USD
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4471000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7641000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-346000	USD
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	19450000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	29047000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2629000	USD
CY2022	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-4348000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	15099000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-3122000	USD
CY2022	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	-659000	USD
CY2021	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	4878000	USD
CY2020	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	-23946000	USD
CY2022	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	-3383000	USD
CY2021	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	14795000	USD
CY2020	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	-13543000	USD
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	69941000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	40673000	USD
CY2021	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	16335000	USD
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	156129000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	120570000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	81419000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	45615000	USD
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	14549000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	11555000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27408000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	318000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3936000	USD
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	9189000	USD
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2022	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2020	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-66271000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68245000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-41679000	USD
CY2022	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	-7500000	USD
CY2021	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	51377000	USD
CY2020	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	30000000	USD
CY2022	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2021	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	321425000	USD
CY2020	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2022	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	2193000	USD
CY2021	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	-27707000	USD
CY2020	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	0	USD
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	400000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2022	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	315719000	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	43000000	USD
CY2022	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	300000000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2021	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	33000000	USD
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2022	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	0	USD
CY2021	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	0	USD
CY2020	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	9500000	USD
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5307000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-72186000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	82500000	USD
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1373000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3860000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5621000	USD
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	85924000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16001000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	116619000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	203875000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	219876000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103257000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	289799000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	203875000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	219876000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	197214000	USD
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	214491000	USD
CY2019Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	99743000	USD
CY2021Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6661000	USD
CY2020Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5385000	USD
CY2019Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	3514000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	203875000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	219876000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103257000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	282383000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	197214000	USD
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	214491000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	7416000	USD
CY2021Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6661000	USD
CY2020Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5385000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	289799000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	203875000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	219876000	USD
CY2022	us-gaap	Interest Paid Net InterestPaidNet	813000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	2746000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	2448000	USD
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22195000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8908000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15873000	USD
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2021000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3226000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1542000	USD
CY2022	algm	Transfer Of Property Plant And Equipment Net To Held For Sale TransferOfPropertyPlantAndEquipmentNetToHeldForSale	0	USD
CY2021	algm	Transfer Of Property Plant And Equipment Net To Held For Sale TransferOfPropertyPlantAndEquipmentNetToHeldForSale	25969000	USD
CY2020	algm	Transfer Of Property Plant And Equipment Net To Held For Sale TransferOfPropertyPlantAndEquipmentNetToHeldForSale	0	USD
CY2022	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2021	us-gaap	Notes Issued1 NotesIssued1	171000	USD
CY2020	us-gaap	Notes Issued1 NotesIssued1	232000	USD
CY2022	algm	Right Of Use Asset Obtained In Exchange For Operating Lease Liability And Adoption RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityAndAdoption	356000	USD
CY2021	algm	Right Of Use Asset Obtained In Exchange For Operating Lease Liability And Adoption RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityAndAdoption	0	USD
CY2020	algm	Right Of Use Asset Obtained In Exchange For Operating Lease Liability And Adoption RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityAndAdoption	0	USD
CY2017Q4	algm	Sale Of Stock Percentage Of Ownership Interest Sold SaleOfStockPercentageOfOwnershipInterestSold	0.288
CY2022Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	USD
CY2022Q1	algm	Number Of Locations NumberOfLocations	16	location
CY2022Q1	algm	Number Of Continents On Which Entity Operates NumberOfContinentsOnWhichEntityOperates	4	continent
CY2022	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1007000	USD
CY2021	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1413000	USD
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:6pt;text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and disclosures of contingencies at the date of the consolidated financial statements and the reported amounts of net sales and expenses during the reporting period. Such estimates relate to useful lives of fixed and intangible assets, allowances for doubtful accounts and customer returns and sales allowances. Such estimates could also relate to the net realizable value of inventory, accrued liabilities, the valuation of stock-based awards, deferred tax valuation allowances, and other reserves. On an ongoing basis, management evaluates its estimates. Actual results could differ from those estimates, and such differences may be material to the consolidated financial statements.</span></div>
CY2022	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-top:6pt;text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain reclassifications have been made to prior-period amounts to conform to current-period reporting classifications.</span></div>
CY2022	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2022	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reportingUnit
CY2021Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	USD
CY2021Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2022Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2022	us-gaap	Advertising Expense AdvertisingExpense	452000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	331000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	273000	USD
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentrations of Credit Risk and Significant CustomersFinancial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents and accounts receivable. The Company maintains its cash and cash equivalents with financial institutions, which management believes to be of a high credit quality. To manage credit risk related to accounts receivables, the Company evaluates its creditworthiness of its customers and maintains allowances, to the extend necessary, for potential credit losses based upon the aging of its accounts receivable balances and known collection issues.
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	768674000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	591207000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	650089000	USD
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	768674000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	591207000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	650089000	USD
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	768674000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	591207000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	650089000	USD
CY2022Q1	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	14924000	USD
CY2021Q1	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	15412000	USD
CY2022	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Expense Income AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsExpenseIncome	-488000	USD
CY2021	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Expense Income AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsExpenseIncome	-2061000	USD
CY2020	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Expense Income AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsExpenseIncome	423000	USD
CY2022	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	3722000	USD
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	3722000	USD
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-565000	USD
CY2022Q1	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	129539000	USD
CY2021Q1	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	108546000	USD
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	105000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	138000	USD
CY2022Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	14819000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15274000	USD
CY2022Q1	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	27256000	USD
CY2021Q1	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	23634000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	412000	USD
CY2022Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	87359000	USD
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	69500000	USD
CY2019Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	17607000	USD
CY2019Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	18019000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	262000	USD
CY2020	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	118719000	USD
CY2020	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	118981000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	386000	USD
CY2020	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	119141000	USD
CY2020	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	119527000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	288000	USD
CY2020Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	17185000	USD
CY2020Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	17473000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-150000	USD
CY2021	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	147026000	USD
CY2021	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	146876000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2021	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	148937000	USD
CY2021	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	148937000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	138000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15274000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	15412000	USD
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-33000	USD
CY2022	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	144318000	USD
CY2022	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	144285000	USD
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2022	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	144773000	USD
CY2022	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	144773000	USD
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	105000	USD
CY2022Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	14819000	USD
CY2021	us-gaap	Inventory Write Down InventoryWriteDown	4464000	USD
CY2022Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	14924000	USD
CY2022Q1	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	11941000	USD
CY2021Q1	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	9629000	USD
CY2022Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	55855000	USD
CY2021Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	50095000	USD
CY2022Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	18364000	USD
CY2021Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	27774000	USD
CY2022Q1	us-gaap	Inventory Net InventoryNet	86160000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	87498000	USD
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	5809000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	3345000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	647011000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	600020000	USD
CY2022Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	436983000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	407627000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	210028000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	192393000	USD
CY2022	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	10976000	USD
CY2021	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	63000	USD
CY2020	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	9418000	USD
CY2022	us-gaap	Depreciation Depreciation	44178000	USD
CY2021	us-gaap	Depreciation Depreciation	44845000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	61168000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	25198000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35970000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	56953000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20587000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	36366000	USD
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4219000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3332000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1805000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3741000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3593000	USD
CY2020	us-gaap	Depreciation Depreciation	62118000	USD
CY2022Q1	us-gaap	Noncurrent Assets NoncurrentAssets	210455000	USD
CY2021Q1	us-gaap	Noncurrent Assets NoncurrentAssets	193791000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	1285000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	18702000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	119000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	20106000	USD
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-97000	USD
CY2022Q1	us-gaap	Goodwill Goodwill	20009000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3356000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3115000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2807000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	19358000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35970000	USD
CY2022Q1	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	6386000	USD
CY2021Q1	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	8177000	USD
CY2022Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	15763000	USD
CY2021Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	0	USD
CY2022Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	12346000	USD
CY2021Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	0	USD
CY2022Q1	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	10525000	USD
CY2021Q1	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	3573000	USD
CY2022Q1	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	1236000	USD
CY2021Q1	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	1295000	USD
CY2022Q1	us-gaap	Deferred Costs DeferredCosts	49000	USD
CY2021Q1	us-gaap	Deferred Costs DeferredCosts	149000	USD
CY2022Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1304000	USD
CY2021Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1419000	USD
CY2022Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	47609000	USD
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	14613000	USD
CY2022Q1	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	33607000	USD
CY2021Q1	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	21538000	USD
CY2022Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	14699000	USD
CY2021Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	15060000	USD
CY2022Q1	algm	Business Combination Consideration Transferred Payable BusinessCombinationConsiderationTransferredPayable	0	USD
CY2021Q1	algm	Business Combination Consideration Transferred Payable BusinessCombinationConsiderationTransferredPayable	14588000	USD
CY2022Q1	us-gaap	Deposit Liability Current DepositLiabilityCurrent	0	USD
CY2021Q1	us-gaap	Deposit Liability Current DepositLiabilityCurrent	14531000	USD
CY2022Q1	us-gaap	Accrued Vacation Current AccruedVacationCurrent	5715000	USD
CY2021Q1	us-gaap	Accrued Vacation Current AccruedVacationCurrent	5739000	USD
CY2022Q1	algm	Accrued Severance Current AccruedSeveranceCurrent	839000	USD
CY2021Q1	algm	Accrued Severance Current AccruedSeveranceCurrent	572000	USD
CY2022Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	1252000	USD
CY2021Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2029000	USD
CY2022Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1831000	USD
CY2021Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	514000	USD
CY2022Q1	us-gaap	Accrued Utilities Current AccruedUtilitiesCurrent	607000	USD
CY2021Q1	us-gaap	Accrued Utilities Current AccruedUtilitiesCurrent	623000	USD
CY2022Q1	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	6909000	USD
CY2021Q1	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	3738000	USD
CY2022Q1	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	65459000	USD
CY2021Q1	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	78932000	USD
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	4648000	USD
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	584000	USD
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	5289000	USD
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3159000	USD
CY2022Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M1D
CY2022Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	5720000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	4385000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	5456000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4335000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3956000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3300000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2592000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1788000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2602000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18573000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2119000	USD
CY2022Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	16454000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2887000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2726000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2644000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2172000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1773000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	3713000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	15915000	USD
CY2022Q1	us-gaap	Long Term Debt LongTermDebt	25000000	USD
CY2021Q1	us-gaap	Long Term Debt LongTermDebt	25000000	USD
CY2022Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2022Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25000000	USD
CY2020Q4	algm	Conversion Of Stock Shares Issued Including Shares Withheld For Tax Withholding Obligation ConversionOfStockSharesIssuedIncludingSharesWithheldForTaxWithholdingObligation	166500000	shares
CY2021Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2022Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25000000	USD
CY2021Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25000000	USD
CY2022Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	826000	USD
CY2021Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	628000	USD
CY2022Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	8903000	USD
CY2021Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	10656000	USD
CY2022Q1	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2800000	USD
CY2021Q1	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	4800000	USD
CY2022Q1	algm	Unrecognized Tax Benefits Net UnrecognizedTaxBenefitsNet	2757000	USD
CY2021Q1	algm	Unrecognized Tax Benefits Net UnrecognizedTaxBenefitsNet	2774000	USD
CY2022Q1	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	0	USD
CY2021Q1	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	275000	USD
CY2022Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	15286000	USD
CY2021Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	19133000	USD
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10000000	shares
CY2022Q1	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	53717000	USD
CY2022Q1	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	417000	USD
CY2021Q1	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	1518000	USD
CY2022Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	USD
CY2021Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	USD
CY2021Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	USD
CY2022Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	USD
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	36971000	USD
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	119555000	USD
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	119555000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18101000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	18101000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	37105000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37105000	USD
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189748427	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	83448055	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10000000	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2062778	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	92968590	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	191811205	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	176416645	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10000000	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.70
CY2022	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.63
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.71
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.70
CY2022	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.62
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.10
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.71
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2022	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	2062778	shares
CY2021	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	92968590	shares
CY2020	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	0	shares
CY2017Q4	algm	Number Of Classes Of Stock NumberOfClassesOfStock	2	class
CY2020Q4	algm	Conversion Of Stock Shares Issued Including Shares Withheld For Tax Withholding Obligation ConversionOfStockSharesIssuedIncludingSharesWithheldForTaxWithholdingObligation	166500000	shares
CY2020Q4	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	164431766	shares
CY2020Q4	algm	Conversion Of Stock Weighted Average Conversion Price ConversionOfStockWeightedAverageConversionPrice	14.00
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	33548000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49870000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1435000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	121883000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-2288000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	34425000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	18863000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	837000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	18853000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-1451000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	140746000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	53278000	USD
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7779000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3821000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15146000	USD
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1553000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1085000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1468000	USD
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4361000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2115000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4468000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-19552000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16173000	USD
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13693000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-621000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21082000	USD
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	7892000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-17564000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4431000	USD
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	371000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1016000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	18000	USD
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-765000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-351000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-496000	USD
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7498000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18931000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4909000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1841000	USD
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	29557000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-305000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11189000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2162000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationPercent	3988000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationPercent	0	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationPercent	0	USD
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-230000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-13303000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Coronavirus Aid Relief And Economic Security Act Amount EffectiveIncomeTaxRateReconciliationCoronavirusAidReliefAndEconomicSecurityActAmount	-2031000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Coronavirus Aid Relief And Economic Security Act Amount EffectiveIncomeTaxRateReconciliationCoronavirusAidReliefAndEconomicSecurityActAmount	-3834000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Coronavirus Aid Relief And Economic Security Act Amount EffectiveIncomeTaxRateReconciliationCoronavirusAidReliefAndEconomicSecurityActAmount	0	USD
CY2022	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2021	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	-2009000	USD
CY2020	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2823000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Amount EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeAmount	-9066000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Amount EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeAmount	0	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Amount EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeAmount	-1188000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Base Erosion Payment Amount EffectiveIncomeTaxRateReconciliationBaseErosionPaymentAmount	0	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Base Erosion Payment Amount EffectiveIncomeTaxRateReconciliationBaseErosionPaymentAmount	0	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Base Erosion Payment Amount EffectiveIncomeTaxRateReconciliationBaseErosionPaymentAmount	1694000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	0	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	0	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	86000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsAmount	307000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsAmount	1498000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsAmount	0	USD
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-157000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1279000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	283000	USD
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2370000	USD
CY2021Q1	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	9482000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	356000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	514000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Deferred Tax Remeasurement Amount EffectiveIncomeTaxRateReconciliationDeferredTaxRemeasurementAmount	0	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Deferred Tax Remeasurement Amount EffectiveIncomeTaxRateReconciliationDeferredTaxRemeasurementAmount	309000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Deferred Tax Remeasurement Amount EffectiveIncomeTaxRateReconciliationDeferredTaxRemeasurementAmount	0	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Foreign Base Company Income Amount EffectiveIncomeTaxRateReconciliationForeignBaseCompanyIncomeAmount	283000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Foreign Base Company Income Amount EffectiveIncomeTaxRateReconciliationForeignBaseCompanyIncomeAmount	43000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Foreign Base Company Income Amount EffectiveIncomeTaxRateReconciliationForeignBaseCompanyIncomeAmount	0	USD
CY2022	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-17000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	26000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	361000	USD
CY2022	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	0	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	5491000	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Gain On Contingent Purchase Price Reduction Amount EffectiveIncomeTaxRateReconciliationGainOnContingentPurchasePriceReductionAmount	-420000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Gain On Contingent Purchase Price Reduction Amount EffectiveIncomeTaxRateReconciliationGainOnContingentPurchasePriceReductionAmount	-525000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	841000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Gain On Contingent Purchase Price Reduction Amount EffectiveIncomeTaxRateReconciliationGainOnContingentPurchasePriceReductionAmount	0	USD
CY2022	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-590000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	6454000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	8698000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	5892000	USD
CY2021	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-862000	USD
CY2020	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-186000	USD
CY2022	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	20000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-63000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-230000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-19552000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16173000	USD
CY2021	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	16000000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2106000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	11054000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	11137000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	9304000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	6304000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2837000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	821000	USD
CY2022Q1	algm	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	2221000	USD
CY2021Q1	algm	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	0	USD
CY2022Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2067000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2050000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	32714000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	38231000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5070000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5025000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	27644000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	33206000	USD
CY2022Q1	algm	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	4720000	USD
CY2021Q1	algm	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	4366000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	2801000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	324000	USD
CY2022Q1	algm	Deferred Income Tax Estimated Rate Benefit DeferredIncomeTaxEstimatedRateBenefit	4463000	USD
CY2021Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	1868000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	2156000	USD
CY2021Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2022Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9677000	USD
CY2021Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6234000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	17967000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	26972000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2459000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2433000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2554000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2542000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2559000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2501000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	232000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2554000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2559000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6264000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	55000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4863000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	8513000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	95000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	60000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	55000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2459000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2554000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2559000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	58000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	73000	USD
CY2020	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	9500000	USD
CY2022	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1790000	USD

Files In Submission

Name	View Source	Status
0000866291-22-000011-index-headers.html	Edgar Link	pending
0000866291-22-000011-index.html	Edgar Link	pending
0000866291-22-000011.txt	Edgar Link	pending
0000866291-22-000011-xbrl.zip	Edgar Link	pending
algm-20220325.htm	Edgar Link	pending
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$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

2022 Q1 Form 10-K Financial Statement

#000086629122000011 Filed on May 18, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM ALLEGRO MICROSYSTEMS, INC. Stock $algm

2022 Q1 Form 10-K Financial Statement

#000086629122000011 Filed on May 18, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm