$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

$algm Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-Q Financial Statement

#000086629122000008 Filed on February 02, 2022

Income Statement

Concept	2022 Q1	2021 Q4	2020 Q4
Revenue	$200.3M	$186.6M	$164.4M
YoY Change	14.38%	13.49%	2.91%
Cost Of Revenue	$90.69M	$85.46M	$90.02M
YoY Change	2.94%	-5.07%	-8.4%
Gross Profit	$109.6M	$101.2M	$74.43M
YoY Change	25.97%	35.93%	20.97%
Gross Profit Margin	54.72%	54.21%	45.26%
Selling, General & Admin	$46.79M	$37.96M	$67.65M
YoY Change	34.75%	-43.88%	171.59%
% of Gross Profit	42.69%	37.53%	90.9%
Research & Development	$32.43M	$30.30M	$31.00M
YoY Change	15.25%	-2.26%	21.64%
% of Gross Profit	29.59%	29.95%	41.65%
Depreciation & Amortization	$12.01M	$10.89M	$11.26M
YoY Change	-0.6%	-3.22%	-28.21%
% of Gross Profit	10.95%	10.77%	15.12%
Operating Expenses	$79.35M	$65.56M	$98.65M
YoY Change	31.3%	-33.54%	95.76%
Operating Profit	$30.25M	$35.61M	-$24.22M
YoY Change	13.86%	-246.98%	-317.63%
Interest Expense	$409.0K	-$269.0K	-$2.598M
YoY Change	-118.42%	-89.65%	-26080.0%
% of Operating Profit	1.35%	-0.76%
Other Income/Expense, Net	-$502.0K	$3.634M	-$510.0K
YoY Change	182.02%	-812.55%	529.63%
Pretax Income	$30.16M	$39.25M	-$35.58M
YoY Change	76.87%	-210.32%	-438.89%
Income Tax	$4.504M	$6.281M	-$30.52M
% Of Pretax Income	14.94%	16.0%
Net Earnings	$25.62M	$32.94M	-$5.095M
YoY Change	196.34%	-746.44%	-157.08%
Net Earnings / Revenue	12.79%	17.65%	-3.1%
Basic Earnings Per Share		$0.17	-$0.04
Diluted Earnings Per Share	$133.3K	$0.17	-$0.04
COMMON SHARES
Basic Shares Outstanding	189.9M shares	189.7M shares	124.4M shares
Diluted Shares Outstanding		192.1M shares	124.4M shares

Balance Sheet

Concept	2022 Q1	2021 Q4	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$282.4M	$259.2M	$157.7M
YoY Change	43.19%	64.37%
Cash & Equivalents	$282.4M	$259.2M	$157.7M
Short-Term Investments
Other Short-Term Assets	$22.41M	$23.70M	$38.00M
YoY Change	-56.06%	-37.64%
Inventory	$86.16M	$78.86M	$94.02M
Prepaid Expenses
Receivables	$87.36M	$76.24M	$67.33M
Other Receivables	$1.875M	$1.406M	$0.00
Total Short-Term Assets	$511.7M	$469.2M	$378.5M
YoY Change	18.84%	23.95%
LONG-TERM ASSETS
Property, Plant & Equipment	$210.0M	$207.7M	$214.4M
YoY Change	9.17%	-3.11%
Goodwill	$20.01M	$20.04M	$20.25M
YoY Change	-0.48%	-1.02%
Intangibles	$35.97M
YoY Change
Long-Term Investments	$27.67M	$27.46M	$26.66M
YoY Change	3.78%	3.0%
Other Assets	$47.61M	$48.08M	$12.48M
YoY Change	225.8%	285.18%
Total Long-Term Assets	$380.9M	$382.2M	$333.4M
YoY Change	20.12%	14.66%
TOTAL ASSETS
Total Short-Term Assets	$511.7M	$469.2M	$378.5M
Total Long-Term Assets	$380.9M	$382.2M	$333.4M
Total Assets	$892.6M	$851.4M	$711.9M
YoY Change	19.39%	19.6%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$35.06M	$38.24M	$22.30M
YoY Change	-7.11%	71.48%
Accrued Expenses	$60.43M	$55.59M	$59.90M
YoY Change	-19.09%	-7.2%
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
Total Short-Term Liabilities	$104.2M	$100.8M	$89.12M
YoY Change	-10.67%	13.15%
LONG-TERM LIABILITIES
Long-Term Debt	$25.00M	$25.00M	$25.00M
YoY Change	0.0%	0.0%
Other Long-Term Liabilities	$15.29M	$16.83M	$20.86M
YoY Change	-20.11%	-19.32%
Total Long-Term Liabilities	$40.29M	$16.83M	$45.86M
YoY Change	-8.72%	-63.3%
TOTAL LIABILITIES
Total Short-Term Liabilities	$104.2M	$100.8M	$89.12M
Total Long-Term Liabilities	$40.29M	$16.83M	$45.86M
Total Liabilities	$157.3M	$155.6M	$135.0M
YoY Change	-2.21%	15.26%
SHAREHOLDERS EQUITY
Retained Earnings	$123.0M	$97.34M	-$5.094M
YoY Change	3362.63%	-2010.91%
Common Stock	$1.905M	$1.898M	$1.894M
YoY Change	0.47%	0.21%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$734.2M	$694.7M	$575.8M
YoY Change
Total Liabilities & Shareholders Equity	$892.6M	$851.4M	$711.9M
YoY Change	19.39%	19.6%

Cashflow Statement

Concept	2022 Q1	2021 Q4	2020 Q4
OPERATING ACTIVITIES
Net Income	$25.62M	$32.94M	-$5.095M
YoY Change	196.34%	-746.44%	-157.08%
Depreciation, Depletion And Amortization	$12.01M	$10.89M	$11.26M
YoY Change	-0.6%	-3.22%	-28.21%
Cash From Operating Activities	$37.57M	$48.68M	$34.89M
YoY Change	-34.13%	39.53%
INVESTING ACTIVITIES
Capital Expenditures	-$14.15M	-$21.97M	-$7.790M
YoY Change	-4.35%	182.04%
Acquisitions
YoY Change
Other Investing Activities	-$1.999M	-$4.855M	$30.00K
YoY Change	-34.5%	-16283.33%
Cash From Investing Activities	-$16.15M	-$26.83M	-$7.760M
YoY Change	-9.51%	245.7%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	902.0K	-7.500M	-72.19M
YoY Change	22450.0%	-89.61%
NET CHANGE
Cash From Operating Activities	37.57M	48.68M	34.89M
Cash From Investing Activities	-16.15M	-26.83M	-7.760M
Cash From Financing Activities	902.0K	-7.500M	-72.19M
Net Change In Cash	22.32M	14.36M	-45.06M
YoY Change	-43.05%	-131.86%
FREE CASH FLOW
Cash From Operating Activities	$37.57M	$48.68M	$34.89M
Capital Expenditures	-$14.15M	-$21.97M	-$7.790M
Free Cash Flow	$51.72M	$70.65M	$42.68M
YoY Change	-28.0%	65.54%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	City Area Code CityAreaCode	603
	dei	Local Phone Number LocalPhoneNumber	626-2300
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	ALGM
	dei	Entity Central Index Key EntityCentralIndexKey	0000866291
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--03-25
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-12-24
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-39675
	dei	Entity Registrant Name EntityRegistrantName	ALLEGRO MICROSYSTEMS, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-2405937
	dei	Entity Address Address Line1 EntityAddressAddressLine1	955 Perimeter Road
	dei	Entity Address City Or Town EntityAddressCityOrTown	Manchester,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NH
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	03103
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	70000	USD
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	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-297000	USD
CY2021Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39254000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-35583000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	110590000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-18501000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6281000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-30523000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16687000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27913000	USD
CY2021Q4	us-gaap	Profit Loss ProfitLoss	32973000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	-5060000	USD
	us-gaap	Profit Loss ProfitLoss	93903000	USD
	us-gaap	Profit Loss ProfitLoss	9412000	USD
CY2021Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	37000	USD
CY2020Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	35000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	112000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	103000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	32936000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-5095000	USD
	us-gaap	Net Income Loss NetIncomeLoss	93791000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9309000	USD
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2021Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189736901	shares
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	124363078	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189665324	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48121026	shares
CY2021Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	192068222	shares
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124363078	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	191678951	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	171638787	shares
CY2021Q4	us-gaap	Profit Loss ProfitLoss	32973000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	-5060000	USD
	us-gaap	Profit Loss ProfitLoss	93903000	USD
	us-gaap	Profit Loss ProfitLoss	9412000	USD
CY2021Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	37000	USD
CY2020Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	35000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	112000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	103000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	32936000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-5095000	USD
	us-gaap	Net Income Loss NetIncomeLoss	93791000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9309000	USD
CY2021Q4	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1306000	USD
CY2020Q4	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3972000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4873000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	10152000	USD
CY2021Q4	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2020Q4	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	313000	USD
CY2021Q4	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	31630000	USD
CY2020Q4	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1123000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	88918000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	19148000	USD
CY2021Q4	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3000	USD
CY2020Q4	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	10000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-61000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	34000	USD
CY2021Q4	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	31627000	USD
CY2020Q4	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1133000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	88979000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19114000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	635506000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	-5060000	USD
CY2020Q4	algm	Adjustments To Additional Paid In Capital Capitalization Changes AdjustmentsToAdditionalPaidInCapitalCapitalizationChanges	-527000	USD
CY2020Q4	algm	Adjustments To Additional Paid In Capital Reclassification Of Common Stock AdjustmentsToAdditionalPaidInCapitalReclassificationOfCommonStock	298000	USD
CY2020Q4	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	45876000	USD
CY2020Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	321425000	USD
CY2020Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27707000	USD
CY2020Q4	algm	Adjustments To Additional Paid In Capital Conversion Of Awards AdjustmentsToAdditionalPaidInCapitalConversionOfAwards	2081000	USD
CY2020Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	400000000	USD
CY2020Q4	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3972000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	576918000	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	656553000	USD
CY2021Q4	us-gaap	Profit Loss ProfitLoss	32973000	USD
CY2021Q4	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7619000	USD
CY2021Q4	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1306000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27707000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	695839000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	634132000	USD
	us-gaap	Profit Loss ProfitLoss	9412000	USD
	algm	Adjustments To Additional Paid In Capital Capitalization Changes AdjustmentsToAdditionalPaidInCapitalCapitalizationChanges	19165000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	46901000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	321425000	USD
	algm	Adjustments To Additional Paid In Capital Conversion Of Awards AdjustmentsToAdditionalPaidInCapitalConversionOfAwards	2081000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	400000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	10152000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	313000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	576918000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	586871000	USD
	us-gaap	Profit Loss ProfitLoss	93903000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1291000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	18647000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4873000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	695839000	USD
	us-gaap	Profit Loss ProfitLoss	93903000	USD
	us-gaap	Profit Loss ProfitLoss	9412000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36522000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36225000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	75000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	226000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3061000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17526000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	18647000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	46901000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	349000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-272000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-9055000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2100000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	4787000	USD
	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	3857000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	4482000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	0	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6133000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5975000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	9000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-115000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3251000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1118000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11870000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	29655000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	2026000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	2411000	USD
	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	-2775000	USD
	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	8283000	USD
	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	-9874000	USD
	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	-1185000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	118558000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	63534000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	55792000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	25880000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	12549000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	8500000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27407000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	314000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	9189000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	16335000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-50123000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-50401000	USD
	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	7500000	USD
	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	51377000	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	321425000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	27707000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1291000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	400000000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	315719000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	300000000	USD
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	33000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-6209000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-72186000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	604000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6520000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3350000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	62830000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-55703000	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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	266705000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	164173000	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
CY2021Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6661000	USD
CY2020Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5385000	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
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	259208000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	157653000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	7497000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	164173000	USD
	us-gaap	Interest Paid Net InterestPaidNet	541000	USD
	us-gaap	Interest Paid Net InterestPaidNet	2559000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	266705000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16635000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7568000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	4934000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	786000	USD
	us-gaap	Notes Issued1 NotesIssued1	0	USD
	us-gaap	Notes Issued1 NotesIssued1	171000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	356000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021Q4	algm	Number Of Locations NumberOfLocations	16	location
CY2021Q4	algm	Number Of Continents On Which Entity Operates NumberOfContinentsOnWhichEntityOperates	4	continent
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt;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 U.S. 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 unaudited 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, current expected credit losses/allowances for doubtful accounts and customer returns and sales allowances. Such estimates could also relate to the fair value of acquired assets and liabilities, including goodwill and intangible assets, 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 unaudited condensed consolidated financial statements.</span></div>
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:12pt;text-align:justify"><span style="background-color:#ffffff;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="background-color:#ffffff;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>
	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 that management believes to be of a high credit quality. To manage credit risk related to accounts receivables, the Company evaluates the creditworthiness of its customers and maintains allowances, to the extent necessary, for potential credit losses based upon the aging of its accounts receivable balances and known collection issues.
CY2021Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	186629000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	164449000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	568381000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	416099000	USD
CY2021Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	186629000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	164449000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	568381000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	416099000	USD
CY2021Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	186629000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	164449000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	568381000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	416099000	USD
CY2021Q4	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	16014000	USD
CY2021Q1	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	15412000	USD
	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Expense Credit AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsExpenseCredit	602000	USD
	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Expense Credit AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsExpenseCredit	-898000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	4482000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	4482000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-278000	USD
CY2021Q4	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	120500000	USD
CY2021Q1	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	108546000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	70000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	138000	USD
CY2021Q4	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15944000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15274000	USD
CY2021Q4	algm	Trade Accounts Receivable Related Parties Current TradeAccountsReceivableRelatedPartiesCurrent	28251000	USD
CY2021Q1	algm	Trade Accounts Receivable Related Parties Current TradeAccountsReceivableRelatedPartiesCurrent	23634000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	76235000	USD
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	69500000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	138000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	15412000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-68000	USD
CY2021Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15274000	USD
	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	114047000	USD
	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	113979000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	113377000	USD
	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	113377000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	70000	USD
CY2021Q4	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	15944000	USD
CY2021Q4	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	16014000	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
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-150000	USD
	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	103660000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	428843000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	407627000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	207705000	USD
	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	103510000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	104408000	USD
	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	104408000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	138000	USD
CY2020Q4	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	16437000	USD
CY2020Q4	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	16575000	USD
CY2021Q4	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	11751000	USD
CY2021Q1	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	9629000	USD
CY2021Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	45089000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	192393000	USD
CY2021Q4	us-gaap	Depreciation Depreciation	10893000	USD
CY2021Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	50095000	USD
CY2021Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	22018000	USD
CY2021Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	27774000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	78858000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	87498000	USD
CY2021Q4	us-gaap	Inventory Write Down InventoryWriteDown	348000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	5389000	USD
CY2020Q4	us-gaap	Inventory Write Down InventoryWriteDown	885000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	2958000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	636548000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	600020000	USD
	us-gaap	Depreciation Depreciation	33235000	USD
CY2020Q4	us-gaap	Depreciation Depreciation	11255000	USD
	us-gaap	Depreciation Depreciation	33861000	USD
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	208208000	USD
CY2021Q1	us-gaap	Noncurrent Assets NoncurrentAssets	193791000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	20106000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-63000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	20043000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	60468000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	24483000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35985000	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
CY2021Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1087000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3190000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2310000	USD
CY2020Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	926000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	935000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3612000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3480000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3260000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3032000	USD
CY2021Q4	algm	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	21666000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35985000	USD
CY2021Q4	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	10659000	USD
CY2021Q1	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	8177000	USD
CY2021Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	11462000	USD
CY2021Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	0	USD
CY2021Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	13393000	USD
CY2021Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	0	USD
CY2021Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	9680000	USD
CY2021Q1	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	3573000	USD
CY2021Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	1466000	USD
CY2021Q1	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	1295000	USD
CY2021Q4	us-gaap	Deferred Costs DeferredCosts	74000	USD
CY2021Q1	us-gaap	Deferred Costs DeferredCosts	149000	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1344000	USD
CY2021Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1419000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	48078000	USD
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	14613000	USD
CY2021Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	24927000	USD
CY2021Q1	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	21538000	USD
CY2021Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	16639000	USD
CY2021Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	15060000	USD
CY2021Q4	algm	Business Combination Consideration Transferred Payable BusinessCombinationConsiderationTransferredPayable	2000000	USD
CY2021Q1	algm	Business Combination Consideration Transferred Payable BusinessCombinationConsiderationTransferredPayable	14588000	USD
CY2021Q4	us-gaap	Deposit Liability Current DepositLiabilityCurrent	0	USD
CY2021Q1	us-gaap	Deposit Liability Current DepositLiabilityCurrent	14531000	USD
CY2021Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	5423000	USD
CY2021Q1	us-gaap	Accrued Vacation Current AccruedVacationCurrent	5739000	USD
CY2021Q4	algm	Accrued Severance Current AccruedSeveranceCurrent	709000	USD
CY2021Q1	algm	Accrued Severance Current AccruedSeveranceCurrent	572000	USD
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	1949000	USD
CY2021Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2029000	USD
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2096000	USD
CY2021Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	514000	USD
CY2021Q4	us-gaap	Accrued Utilities Current AccruedUtilitiesCurrent	604000	USD
CY2021Q1	us-gaap	Accrued Utilities Current AccruedUtilitiesCurrent	623000	USD
CY2021Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	4915000	USD
CY2021Q1	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	3738000	USD
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	59262000	USD
CY2021Q1	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	78932000	USD
CY2021Q4	us-gaap	Operating Lease Cost OperatingLeaseCost	1075000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3378000	USD
CY2021Q4	us-gaap	Short Term Lease Cost ShortTermLeaseCost	190000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	332000	USD
CY2021Q4	us-gaap	Operating Lease Payments OperatingLeasePayments	1259000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3733000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y6M10D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y6M10D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2021Q4	us-gaap	Operating Lease Expense OperatingLeaseExpense	1454000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	4226000	USD
CY2020Q4	us-gaap	Operating Lease Expense OperatingLeaseExpense	1172000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	3477000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1056000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3886000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3503000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3070000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2597000	USD
CY2021Q4	algm	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	4406000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18518000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2272000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	16246000	USD
CY2021Q1	us-gaap	Operating Leases Future Minimum Payments Remainder Of Fiscal Year OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear	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
CY2021Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	734000	USD
CY2021Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	628000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	10655000	USD
CY2021Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	10656000	USD
CY2021Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2700000	USD
CY2021Q1	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	4800000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2741000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2774000	USD
CY2021Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	0	USD
CY2021Q1	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	275000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16830000	USD
CY2021Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	19133000	USD
CY2021Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	863000	USD
CY2021Q1	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	1518000	USD
CY2021Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	USD
CY2021Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	USD
CY2021Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	USD
CY2021Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	USD
CY2020Q4	algm	Conversion Of Stock Shares Issued Including Shares Withheld For Tax Withholding Obligation ConversionOfStockSharesIssuedIncludingSharesWithheldForTaxWithholdingObligation	166500000	shares
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124363078	shares
	us-gaap	Net Income Loss NetIncomeLoss	9309000	USD
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32973000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	32936000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-5095000	USD
	us-gaap	Net Income Loss NetIncomeLoss	93791000	USD
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	32973000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-5060000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-5060000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	93903000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	93903000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	9412000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	9412000	USD
CY2021Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189736901	shares
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	124363078	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	189665324	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48121026	shares
CY2021Q4	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2331321	shares
CY2020Q4	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2013627	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	123517761	shares
CY2021Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	192068222	shares
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124363078	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	191678951	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	171638787	shares
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2021Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.17
CY2020Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.04
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.50
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.20
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2021Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.17
CY2020Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.04
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.49
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.05
CY2020Q4	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	57553282	shares
CY2021Q4	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	2331321	shares
CY2020Q4	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	57553282	shares
	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	2013627	shares
	algm	Weighted Average Number Issuable Shares Outstanding Adjustment WeightedAverageNumberIssuableSharesOutstandingAdjustment	123517761	shares
CY2021Q4	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7620000	USD
CY2020Q4	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45876000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18647000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	46901000	USD
CY2021Q4	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6517000	USD
CY2020Q4	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-12169000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	17785000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-9764000	USD
CY2021Q4	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-236000	USD
CY2020Q4	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-18354000	USD
	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-1098000	USD
	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-18149000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6281000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-30523000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16687000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27913000	USD
CY2021Q4	algm	Effective Income Tax Rate Reconciliation Continuing Operations Excluding Discrete Tax Items Percent EffectiveIncomeTaxRateReconciliationContinuingOperationsExcludingDiscreteTaxItemsPercent	0.166
CY2020Q4	algm	Effective Income Tax Rate Reconciliation Continuing Operations Excluding Discrete Tax Items Percent EffectiveIncomeTaxRateReconciliationContinuingOperationsExcludingDiscreteTaxItemsPercent	0.342
	algm	Effective Income Tax Rate Reconciliation Continuing Operations Excluding Discrete Tax Items Percent EffectiveIncomeTaxRateReconciliationContinuingOperationsExcludingDiscreteTaxItemsPercent	0.161
	algm	Effective Income Tax Rate Reconciliation Continuing Operations Excluding Discrete Tax Items Percent EffectiveIncomeTaxRateReconciliationContinuingOperationsExcludingDiscreteTaxItemsPercent	0.528
CY2021Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.160
CY2020Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.858
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.151
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.509
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6281000	USD
CY2021Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.160
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16687000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.151
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-30523000	USD
CY2020Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.858
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27913000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.509
	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	16000000	USD

Files In Submission

Name	View Source	Status
0000866291-22-000008-index-headers.html	Edgar Link	pending
0000866291-22-000008-index.html	Edgar Link	pending
0000866291-22-000008.txt	Edgar Link	pending
0000866291-22-000008-xbrl.zip	Edgar Link	pending
algm-20211224.htm	Edgar Link	pending
algm-20211224.xsd	Edgar Link	pending
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algm-20211224x10ex322.htm	Edgar Link	pending
algm-20211224_cal.xml	Edgar Link	unprocessable
algm-20211224_def.xml	Edgar Link	unprocessable
algm-20211224_htm.xml	Edgar Link	completed
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$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

2022 Q1 Form 10-Q Financial Statement

#000086629122000008 Filed on February 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM ALLEGRO MICROSYSTEMS, INC. Stock $algm

2022 Q1 Form 10-Q Financial Statement

#000086629122000008 Filed on February 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm