$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

$algm Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-K Financial Statement

#000086629123000017 Filed on May 25, 2023

Income Statement

Concept	2023 Q2	2023 Q1	2023
Revenue	$278.3M	$269.4M	$973.7M
YoY Change	27.8%	34.53%	26.67%
Cost Of Revenue	$120.3M	$116.4M	$427.6M
YoY Change	21.09%	28.3%	18.37%
Gross Profit	$158.0M	$153.1M	$546.1M
YoY Change	33.43%	39.68%	34.02%
Gross Profit Margin	56.76%	56.82%	56.09%
Selling, General & Admin	$44.23M	$48.25M	$194.7M
YoY Change	-36.8%	3.13%	29.01%
% of Gross Profit	28.0%	31.52%	35.66%
Research & Development	$42.98M	$41.83M	$150.9M
YoY Change	26.93%	28.99%	23.78%
% of Gross Profit	27.21%	27.33%	27.62%
Depreciation & Amortization	$14.27M	$14.10M	$50.81M
YoY Change	19.76%	17.48%	4.7%
% of Gross Profit	9.04%	9.21%	9.3%
Operating Expenses	$87.20M	$89.99M	$342.8M
YoY Change	-15.86%	13.4%	26.57%
Operating Profit	$70.75M	$63.10M	$203.3M
YoY Change	380.06%	108.62%	48.78%
Interest Expense	-$2.642M	$4.981M	$7.433M
YoY Change	2101.67%	1117.85%	-803.22%
% of Operating Profit	-3.73%	7.89%	3.66%
Other Income/Expense, Net	-$2.716M	-$164.0K	$606.0K
YoY Change	-20.79%	-67.33%	-87.14%
Pretax Income	$68.10M	$67.92M	$211.3M
YoY Change	456.04%	125.23%	50.16%
Income Tax	$7.215M	$5.909M	$23.85M
% Of Pretax Income	10.59%	8.7%	11.29%
Net Earnings	$60.85M	$61.98M	$187.4M
YoY Change	493.83%	141.95%	56.91%
Net Earnings / Revenue	21.87%	23.0%	19.24%
Basic Earnings Per Share	$0.32		$0.98
Diluted Earnings Per Share	$0.31	$0.32	$0.97
COMMON SHARES
Basic Shares Outstanding	191.8M shares	191.5M shares	191.2M shares
Diluted Shares Outstanding	195.0M shares		193.7M shares

Balance Sheet

Concept	2023 Q2	2023 Q1	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$353.4M	$351.6M	$351.6M
YoY Change	23.33%	24.5%	24.5%
Cash & Equivalents	$353.4M	$351.6M	$351.6M
Short-Term Investments
Other Short-Term Assets	$47.30M	$32.48M	$32.48M
YoY Change	65.49%	44.91%	44.91%
Inventory	$174.2M	$151.3M	$151.3M
Prepaid Expenses
Receivables	$121.7M	$126.7M	$126.7M
Other Receivables	$3.750M	$3.750M	$3.750M
Total Short-Term Assets	$700.3M	$665.8M	$665.8M
YoY Change	32.37%	30.12%	30.12%
LONG-TERM ASSETS
Property, Plant & Equipment	$285.2M	$280.0M	$280.0M
YoY Change	32.77%	33.3%	23.84%
Goodwill	$28.05M	$27.69M
YoY Change	40.57%	38.39%
Intangibles	$51.97M	$52.38M
YoY Change	43.79%	45.62%
Long-Term Investments	$26.98M	$27.27M	$27.27M
YoY Change	0.65%	-1.47%	-31.87%
Other Assets	$134.1M	$119.6M	$119.6M
YoY Change	150.4%	151.19%	284.77%
Total Long-Term Assets	$533.8M	$515.3M	$515.3M
YoY Change	34.43%	35.28%	35.28%
TOTAL ASSETS
Total Short-Term Assets	$700.3M	$665.8M	$665.8M
Total Long-Term Assets	$533.8M	$515.3M	$515.3M
Total Assets	$1.234B	$1.181B	$1.181B
YoY Change	33.25%	32.32%	32.32%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$71.85M	$65.94M	$65.94M
YoY Change	83.3%	88.08%	88.08%
Accrued Expenses	$81.70M	$99.39M	$99.39M
YoY Change	12.52%	64.48%	64.48%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$153.5M	$165.3M	$165.3M
YoY Change	37.33%	58.63%	58.63%
LONG-TERM LIABILITIES
Long-Term Debt	$25.00M	$25.00M	$25.00M
YoY Change	0.0%	0.0%	0.0%
Other Long-Term Liabilities	$27.78M	$24.02M	$24.02M
YoY Change	97.64%	57.1%	-14.34%
Total Long-Term Liabilities	$52.78M	$49.02M	$49.02M
YoY Change	275.5%	21.67%	-7.58%
TOTAL LIABILITIES
Total Short-Term Liabilities	$153.5M	$165.3M	$165.3M
Total Long-Term Liabilities	$52.78M	$49.02M	$49.02M
Total Liabilities	$207.5M	$215.5M	$215.5M
YoY Change	27.5%	37.05%	36.05%
SHAREHOLDERS EQUITY
Retained Earnings	$371.2M	$310.3M
YoY Change	178.64%	152.37%
Common Stock	$1.924M	$1.918M
YoY Change	0.63%	0.68%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.027B	$965.6M	$965.6M
YoY Change
Total Liabilities & Shareholders Equity	$1.234B	$1.181B	$1.181B
YoY Change	33.25%	32.32%	32.32%

Cashflow Statement

Concept	2023 Q2	2023 Q1	2023
OPERATING ACTIVITIES
Net Income	$60.85M	$61.98M	$187.4M
YoY Change	493.83%	141.95%	56.91%
Depreciation, Depletion And Amortization	$14.27M	$14.10M	$50.81M
YoY Change	19.76%	17.48%	4.7%
Cash From Operating Activities	$49.05M	$47.55M	$193.2M
YoY Change	34.18%	26.56%	23.75%
INVESTING ACTIVITIES
Capital Expenditures	$44.91M	$30.21M	$79.78M
YoY Change	212.11%	-313.53%	14.06%
Acquisitions			$19.92M
YoY Change			36.92%
Other Investing Activities	$9.971M	-$193.0K	-$19.92M
YoY Change		-90.35%	-642.81%
Cash From Investing Activities	-$34.94M	-$30.41M	-$99.70M
YoY Change	142.82%	88.29%	50.44%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-11.04M	-3.304M	-20.00M
YoY Change	20.77%	-466.3%	276.82%
NET CHANGE
Cash From Operating Activities	49.05M	47.55M	193.2M
Cash From Investing Activities	-34.94M	-30.41M	-99.70M
Cash From Financing Activities	-11.04M	-3.304M	-20.00M
Net Change In Cash	3.072M	13.84M	73.51M
YoY Change	-52.54%	-38.01%	-14.45%
FREE CASH FLOW
Cash From Operating Activities	$49.05M	$47.55M	$193.2M
Capital Expenditures	$44.91M	$30.21M	$79.78M
Free Cash Flow	$4.136M	$17.34M	$113.4M
YoY Change	-81.34%	-66.48%	31.61%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000866291
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--03-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-39675
CY2023	dei	Entity Registrant Name EntityRegistrantName	ALLEGRO MICROSYSTEMS, INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-2405937
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	955 Perimeter Road
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Manchester,
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	NH
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	03103
CY2023	dei	City Area Code CityAreaCode	603
CY2023	dei	Local Phone Number LocalPhoneNumber	626-2300
CY2023	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2023	dei	Trading Symbol TradingSymbol	ALGM
CY2023	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2023	dei	Auditor Firm AuditorFirmId	238
CY2022	dei	Auditor Firm AuditorFirmId	248
CY2023	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2023	dei	Auditor Location AuditorLocation	Boston, Massachusetts
CY2022	dei	Auditor Name AuditorName	Grant Thornton LLP
CY2022	dei	Auditor Location AuditorLocation	Boston, Massachusetts
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CY2023	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1724000	usd
CY2022	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1442000	usd
CY2021	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1225000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	980000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-568000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2889000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-406000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1007000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1413000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	7471000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	3722000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	0	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	606000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	992000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-475000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	211346000	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
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23852000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-19552000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	187494000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	137000	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
CY2023	us-gaap	Net Income Loss NetIncomeLoss	187357000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191197452	shares
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
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	193688102	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
CY2023	us-gaap	Profit Loss ProfitLoss	187494000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	137000	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
CY2023	us-gaap	Net Income Loss NetIncomeLoss	187357000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2892000	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
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-164000	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
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-492000	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
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2400000	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
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	184957000	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
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-64000	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
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	185021000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	112824000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26064000	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	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 Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-1416000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	735363000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	187494000	usd
CY2023	us-gaap	Dividends Cash DividendsCash	42000	usd
CY2023	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2793000	usd
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	61668000	usd
CY2023	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	18061000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2892000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-492000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	966815000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	187494000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	119555000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	18101000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	50808000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48527000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48307000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	99000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	101000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	226000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-40116000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7498000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18931000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	61798000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	33548000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	49870000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-285000	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
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-9055000	usd
CY2023	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2800000	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
CY2023	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	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
CY2023	algm	Inventory Write Down And Accounts Receivable Credit Loss Expense Reversal InventoryWriteDownAndAccountsReceivableCreditLossExpenseReversal	-1438000	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
CY2023	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	7471000	usd
CY2022	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	3722000	usd
CY2021	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	0	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12484000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18347000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9303000	usd
CY2023	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-2226000	usd
CY2022	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	2668000	usd
CY2021	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	28000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	75150000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4471000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7641000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	23263000	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
CY2023	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	11958000	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
CY2023	algm	Increase Decrease In Due To From Related Parties IncreaseDecreaseInDueToFromRelatedParties	18326000	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
CY2023	algm	Increase Decrease In Accrued Liabilities And Other Current And Long Term Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentAndLongTermLiabilities	22934000	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
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	193206000	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
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	79775000	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
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	19921000	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
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	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
CY2023	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	usd
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	9189000	usd
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	usd
CY2023	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	usd
CY2022	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	usd
CY2021	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	16335000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-99696000	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
CY2023	algm	Payments To Fund Loans To Related Parties Financing Activities PaymentsToFundLoansToRelatedPartiesFinancingActivities	7500000	usd
CY2022	algm	Payments To Fund Loans To Related Parties Financing Activities PaymentsToFundLoansToRelatedPartiesFinancingActivities	7500000	usd
CY2021	algm	Payments To Fund Loans To Related Parties Financing Activities PaymentsToFundLoansToRelatedPartiesFinancingActivities	0	usd
CY2023	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	2812000	usd
CY2022	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	usd
CY2021	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	51377000	usd
CY2023	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	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
CY2023	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	18061000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	638000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	usd
CY2023	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	2793000	usd
CY2022	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	2831000	usd
CY2021	algm	Proceeds Payments From Issuance Of Common Stock Tax Withholding Net Share Settlement Share Based Payment Arrangement ProceedsPaymentsFromIssuanceOfCommonStockTaxWithholdingNetShareSettlementShareBasedPaymentArrangement	-27707000	usd
CY2023	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	42000	usd
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	0	usd
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	0	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	400000000	usd
CY2023	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	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
CY2023	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	usd
CY2022	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	usd
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	300000000	usd
CY2023	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	usd
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	usd
CY2021	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	33000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-19998000	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
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4606000	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
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	68906000	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
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
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	358705000	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
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
CY2023Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	351576000	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
CY2023Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	7129000	usd
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	7416000	usd
CY2021Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6661000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	358705000	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
CY2023	us-gaap	Interest Paid Net InterestPaidNet	1923000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	813000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	2746000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	58209000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22195000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8908000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	16369000	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
CY2023	algm	Transfer Of Property Plant And Equipment Net To Held For Sale TransferOfPropertyPlantAndEquipmentNetToHeldForSale	0	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
CY2023	us-gaap	Notes Issued1 NotesIssued1	0	usd
CY2022	us-gaap	Notes Issued1 NotesIssued1	0	usd
CY2021	us-gaap	Notes Issued1 NotesIssued1	171000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4870000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3159000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
CY2023Q1	algm	Number Of Locations NumberOfLocations	26	location
CY2023Q1	algm	Number Of Continents On Which Entity Operates NumberOfContinentsOnWhichEntityOperates	4	continent
CY2023	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, provisions for expected credit losses and customer returns and sales allowances. Such estimates also relate to accrued liabilities, the valuation of stock-based awards, deferred tax valuation allowances, the net realizable value of inventory, 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>
CY2023	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>
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2023Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	usd
CY2022Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	591207000	usd
CY2023	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reportingunit
CY2023Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4327000	usd
CY2022Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	541000	usd
CY2023Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	usd
CY2022Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<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%">Concentrations of Credit Risk and Significant Customers</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%">Financial 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 </span></div>evaluates the 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.
CY2023	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reportingunit
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	973653000	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
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	973653000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	768674000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	973653000	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
CY2023Q1	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	30571000	usd
CY2022Q1	algm	Accounts Receivable Returns Credits Issued And Price Protection Adjustments Current AccountsReceivableReturnsCreditsIssuedAndPriceProtectionAdjustmentsCurrent	14924000	usd
CY2023	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	7471000	usd
CY2022	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	3722000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	7471000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	3722000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	112000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-565000	usd
CY2020Q3	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	7300000	usd
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4800000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	2000000	usd
CY2022Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	2800000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	2800000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	usd
CY2023Q1	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	150914000	usd
CY2022Q1	algm	Accounts Receivable Before Allowance For Credit Loss And Due From Related Parties Current AccountsReceivableBeforeAllowanceForCreditLossAndDueFromRelatedPartiesCurrent	129539000	usd
CY2023Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	102000	usd
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	105000	usd
CY2023Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	26269000	usd
CY2022Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	14819000	usd
CY2023Q1	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	13253000	usd
CY2022Q1	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	27256000	usd
CY2023Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	111290000	usd
CY2022Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	87359000	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
CY2022Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	14924000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-3000	usd
CY2023	algm	Accounts Receivable Returns And Sales Allowances Expense Reversal AccountsReceivableReturnsAndSalesAllowancesExpenseReversal	129504000	usd
CY2023	algm	Accounts Receivable Credit Loss And Returns And Sales Allowances Expense Reversal AccountsReceivableCreditLossAndReturnsAndSalesAllowancesExpenseReversal	129501000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	usd
CY2023	algm	Accounts Receivable Allowance For Returns And Sales Writeoff AccountsReceivableAllowanceForReturnsAndSalesWriteoff	118054000	usd
CY2023	algm	Accounts Receivable Allowance For Credit Loss And Returns And Sales Writeoff AccountsReceivableAllowanceForCreditLossAndReturnsAndSalesWriteoff	118054000	usd
CY2023Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	102000	usd
CY2023Q1	algm	Accounts Receivable Allowance For Returns And Sales Current AccountsReceivableAllowanceForReturnsAndSalesCurrent	26269000	usd
CY2023Q1	algm	Accounts Receivable Allowance For Credit Loss Returns And Sales Current AccountsReceivableAllowanceForCreditLossReturnsAndSalesCurrent	26371000	usd
CY2023Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	479741000	usd
CY2022Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	436983000	usd
CY2023Q1	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	15049000	usd
CY2022Q1	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	11941000	usd
CY2023Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	98836000	usd
CY2022Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	55855000	usd
CY2023Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	37416000	usd
CY2022Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	18364000	usd
CY2023Q1	us-gaap	Inventory Net InventoryNet	151301000	usd
CY2022Q1	us-gaap	Inventory Net InventoryNet	86160000	usd
CY2023	us-gaap	Inventory Write Down InventoryWriteDown	10009000	usd
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	5809000	usd
CY2021	us-gaap	Inventory Write Down InventoryWriteDown	4464000	usd
CY2023Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	742840000	usd
CY2022Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	647011000	usd
CY2023Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	263099000	usd
CY2022Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	210028000	usd
CY2023	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	1638000	usd
CY2022	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	10976000	usd
CY2021	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	63000	usd
CY2023	us-gaap	Depreciation Depreciation	45469000	usd
CY2022	us-gaap	Depreciation Depreciation	44178000	usd
CY2021	us-gaap	Depreciation Depreciation	44845000	usd
CY2023Q1	us-gaap	Noncurrent Assets NoncurrentAssets	265267000	usd
CY2022Q1	us-gaap	Noncurrent Assets NoncurrentAssets	210455000	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
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	7096000	usd
CY2023	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	586000	usd
CY2023Q1	us-gaap	Goodwill Goodwill	27691000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	76985000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	24607000	usd
CY2023Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	52378000	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	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	35970000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5209000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4219000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3332000	usd
CY2022Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	12346000	usd
CY2023Q1	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	17319000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5552000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	5229000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4926000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4573000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4282000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	23120000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	47682000	usd
CY2023Q1	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	13633000	usd
CY2022Q1	us-gaap	Value Added Tax Receivable Noncurrent ValueAddedTaxReceivableNoncurrent	6386000	usd
CY2023Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	13133000	usd
CY2022Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	15763000	usd
CY2023Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	19929000	usd
CY2022Q1	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	10525000	usd
CY2023Q1	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	436000	usd
CY2022Q1	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	1236000	usd
CY2023Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	4780000	usd
CY2022Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1353000	usd
CY2023Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	69230000	usd
CY2022Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	47609000	usd
CY2023Q1	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	40484000	usd
CY2022Q1	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	33607000	usd
CY2021Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2542000	usd
CY2023Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	20205000	usd
CY2022Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	14699000	usd
CY2023Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4327000	usd
CY2022Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	541000	usd
CY2023Q1	us-gaap	Accrued Vacation Current AccruedVacationCurrent	8178000	usd
CY2022Q1	us-gaap	Accrued Vacation Current AccruedVacationCurrent	5715000	usd
CY2023Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	6243000	usd
CY2022Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	1252000	usd
CY2023Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	5625000	usd
CY2022Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1831000	usd
CY2023Q1	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	9832000	usd
CY2022Q1	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	7814000	usd
CY2023Q1	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	94894000	usd
CY2022Q1	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	65459000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5545000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	4833000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	4648000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	326000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	584000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	5034000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	5289000	usd
CY2023Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M25D
CY2022Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M1D
CY2023Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.053
CY2022Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4957000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4071000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3240000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2520000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2818000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	23151000	usd
CY2023Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5610000	usd
CY2023Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	17541000	usd
CY2023Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25000000	usd
CY2022Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	usd
CY2023Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	8032000	usd
CY2022Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	8903000	usd
CY2023Q1	algm	Unrecognized Tax Benefits Net UnrecognizedTaxBenefitsNet	2837000	usd
CY2022Q1	algm	Unrecognized Tax Benefits Net UnrecognizedTaxBenefitsNet	2757000	usd
CY2023Q1	algm	Other Long Term Liabilities Noncurrent OtherLongTermLiabilitiesNoncurrent	98000	usd
CY2022Q1	algm	Other Long Term Liabilities Noncurrent OtherLongTermLiabilitiesNoncurrent	3626000	usd
CY2023Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	10967000	usd
CY2022Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	15286000	usd
CY2023Q1	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	56322000	usd
CY2022Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2023Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2023Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	0	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	187357000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	119407000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	17953000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	187494000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	187494000	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 Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	18101000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18101000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191197452	shares
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
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2490650	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
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	193688102	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
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.98
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
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.97
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
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	17586	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3622	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	273	shares
CY2023	algm	Incremental Common Shares Attributable To Dilutive Effect Of Conversion Of Common Stock IncrementalCommonSharesAttributableToDilutiveEffectOfConversionOfCommonStock	0	shares
CY2022	algm	Incremental Common Shares Attributable To Dilutive Effect Of Conversion Of Common Stock IncrementalCommonSharesAttributableToDilutiveEffectOfConversionOfCommonStock	0	shares
CY2021	algm	Incremental Common Shares Attributable To Dilutive Effect Of Conversion Of Common Stock IncrementalCommonSharesAttributableToDilutiveEffectOfConversionOfCommonStock	92438187	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2490650	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
CY2023Q1	algm	Defined Contribution Plan Age DefinedContributionPlanAge	P62Y
CY2023	algm	Defined Contribution Plan Minimum Years Of Service DefinedContributionPlanMinimumYearsOfService	P5Y
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	190107000	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
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	61798000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	33548000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49870000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	21239000	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
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	211346000	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
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	53973000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7779000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3821000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	472000	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
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9523000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4361000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2115000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	63968000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13693000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-621000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-36276000	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
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	310000	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
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4150000	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
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-40116000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7498000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18931000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23852000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-19552000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	44383000	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
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1027000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2370000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	356000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Fdii Amount EffectiveIncomeTaxRateReconciliationFdiiAmount	25391000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Fdii Amount EffectiveIncomeTaxRateReconciliationFdiiAmount	9066000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Fdii Amount EffectiveIncomeTaxRateReconciliationFdiiAmount	0	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	3641000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2823000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2162000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1025000	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
CY2023	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-914000	usd
CY2022	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-590000	usd
CY2021	algm	Effective Income Tax Rate Reconciliation Cumulative Provision To Return Amount EffectiveIncomeTaxRateReconciliationCumulativeProvisionToReturnAmount	-862000	usd
CY2023	algm	Effective Income Tax Rate Reconciliation Gain On Contingent Purchase Price Reduction Amount EffectiveIncomeTaxRateReconciliationGainOnContingentPurchasePriceReductionAmount	-588000	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
CY2023	algm	Effective Income Tax Rate Reconciliation Foreign Base Company Income Amount EffectiveIncomeTaxRateReconciliationForeignBaseCompanyIncomeAmount	-307000	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
CY2023	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-81000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-17000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	26000	usd
CY2023	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationPercent	8931000	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
CY2023	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	954000	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
CY2023	algm	Effective Income Tax Rate Reconciliation Deferred Tax Remeasurement Amount EffectiveIncomeTaxRateReconciliationDeferredTaxRemeasurementAmount	651000	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
CY2023	algm	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsAmount	338000	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
CY2023	algm	Effective Income Tax Rate Reconciliation Coronavirus Aid Relief And Economic Security Act Amount EffectiveIncomeTaxRateReconciliationCoronavirusAidReliefAndEconomicSecurityActAmount	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
CY2023	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	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
CY2023	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-485000	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
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23852000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21191000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-19552000	usd
CY2023Q1	algm	Deferred Tax Assets Capitalized Research And Development Costs DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts	30582000	usd
CY2022Q1	algm	Deferred Tax Assets Capitalized Research And Development Costs DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts	0	usd
CY2023Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	11506000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	11137000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	8730000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	5892000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3842000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2837000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3220000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	6454000	usd
CY2023Q1	algm	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	2479000	usd
CY2022Q1	algm	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	2221000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2803000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2067000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	361000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2106000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	63523000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	32714000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3581000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5070000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	59942000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	27644000	usd
CY2023Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	4172000	usd
CY2022Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	2801000	usd
CY2023Q1	algm	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	3020000	usd
CY2022Q1	algm	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	4720000	usd
CY2023Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	2391000	usd
CY2022Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	2156000	usd
CY2023Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9583000	usd
CY2022Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9677000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	50359000	usd
CY2022Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	17967000	usd
CY2023Q1	algm	Deferred Tax Assets Capitalized Research And Development Costs DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts	30582000	usd
CY2023Q1	algm	Deferred Income Tax Estimated Rate Benefit DeferredIncomeTaxEstimatedRateBenefit	13133000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2408000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2392000	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
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
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	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
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	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
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	51000	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
CY2023Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2408000	usd
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2459000	usd
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2554000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	39000	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
CY2023Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	445000	usd
CY2022Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	324000	usd
CY2023	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1790000	usd
CY2023	us-gaap	Debt Instrument Periodic Payment DebtInstrumentPeriodicPayment	3014000	usd
CY2023	us-gaap	Interest Income Other InterestIncomeOther	202000	usd

Files In Submission

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0000866291-23-000017-index.html	Edgar Link	pending
0000866291-23-000017.txt	Edgar Link	pending
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algm-20230331_htm.xml	Edgar Link	completed
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algm-20230331_cal.xml	Edgar Link	unprocessable
algm-20230331_pre.xml	Edgar Link	unprocessable
algm-20230331_lab.xml	Edgar Link	unprocessable

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$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm

2023 Q2 Form 10-K Financial Statement

#000086629123000017 Filed on May 25, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM ALLEGRO MICROSYSTEMS, INC. Stock $algm

2023 Q2 Form 10-K Financial Statement

#000086629123000017 Filed on May 25, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALGM
ALLEGRO MICROSYSTEMS, INC. Stock $algm