$ACLS
AXCELIS TECHNOLOGIES INC Stock $acls

$acls Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000155837024001628 Filed on February 23, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$252.4M	$310.3M	$1.131B
YoY Change	-0.65%	16.63%	22.89%
Cost Of Revenue	$136.3M	$172.4M	$639.3M
YoY Change	-9.12%	10.13%	23.37%
Gross Profit	$116.1M	$137.9M	$491.3M
YoY Change	11.57%	25.91%	22.28%
Gross Profit Margin	45.98%	44.44%	43.45%
Selling, General & Admin	$33.85M	$33.93M	$128.6M
YoY Change	17.17%	8.27%	15.78%
% of Gross Profit	29.17%	24.61%	26.18%
Research & Development	$25.66M	$24.91M	$96.91M
YoY Change	7.95%	12.78%	23.68%
% of Gross Profit	22.11%	18.07%	19.72%
Depreciation & Amortization	$3.775M	$3.569M	$13.07M
YoY Change	21.77%	19.24%	12.6%
% of Gross Profit	3.25%	2.59%	2.66%
Operating Expenses	$59.51M	$58.85M	$225.5M
YoY Change	13.01%	10.13%	19.05%
Operating Profit	$56.54M	$79.05M	$265.8M
YoY Change	10.09%	40.94%	25.16%
Interest Expense	$4.170M	$4.055M	$12.85M
YoY Change	208.2%	167.13%	130.49%
% of Operating Profit	7.38%	5.13%	4.84%
Other Income/Expense, Net	-$1.710M	$4.300M	-$48.00K
YoY Change	-210.68%	-47.49%	-99.36%
Pretax Income	$59.00M	$87.41M	$278.6M
YoY Change	11.53%	32.84%	35.98%
Income Tax	$7.404M	$16.35M	$32.34M
% Of Pretax Income	12.55%	18.71%	11.61%
Net Earnings	$51.60M	$71.06M	$246.3M
YoY Change	8.17%	24.68%	34.51%
Net Earnings / Revenue	20.44%	22.9%	21.78%
Basic Earnings Per Share	$1.58		$7.52
Diluted Earnings Per Share	$1.57	$2.15	$7.43
COMMON SHARES
Basic Shares Outstanding	32.63M	32.75M	32.76M
Diluted Shares Outstanding	32.93M		33.17M

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$530.2M	$506.1M	$506.1M
YoY Change	19.22%	17.12%	17.12%
Cash & Equivalents	$134.0M	$167.3M	$167.3M
Short-Term Investments	$396.2M	$338.9M	$338.9M
Other Short-Term Assets	$54.54M	$49.40M	$49.40M
YoY Change	43.19%	48.34%	48.34%
Inventory	$312.2M	$306.5M	$306.5M
Prepaid Expenses
Receivables	$208.5M	$218.0M	$218.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.105B	$1.080B	$1.080B
YoY Change	18.3%	23.06%	23.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$98.90M	$101.3M	$101.3M
YoY Change	141.39%	155.44%	1.33%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$102.3M	$100.7M	$100.7M
YoY Change	200.36%	197.88%	179.57%
Total Long-Term Assets	$201.2M	$202.0M	$202.0M
YoY Change	38.37%	48.52%	48.52%
TOTAL ASSETS
Total Short-Term Assets	$1.105B	$1.080B	$1.080B
Total Long-Term Assets	$201.2M	$202.0M	$202.0M
Total Assets	$1.307B	$1.282B	$1.282B
YoY Change	21.0%	26.47%	26.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$39.85M	$54.40M	$54.40M
YoY Change	-34.1%	-12.75%	-12.75%
Accrued Expenses	$16.41M	$31.45M	$31.45M
YoY Change	-11.07%	-23.13%	-23.13%
Deferred Revenue	$164.7M	$164.7M
YoY Change	4.99%	33.36%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.503M	$1.511M	$1.511M
YoY Change	15.88%	22.95%	22.95%
Total Short-Term Liabilities	$276.6M	$285.1M	$285.1M
YoY Change	3.22%	14.91%	14.91%
LONG-TERM LIABILITIES
Long-Term Debt	$43.33M	$43.67M	$43.67M
YoY Change	-3.35%	-3.34%	-3.34%
Other Long-Term Liabilities	$84.98M	$88.28M	$88.28M
YoY Change	316.92%	305.67%	66.36%
Total Long-Term Liabilities	$128.3M	$132.0M	$132.0M
YoY Change	529.49%	506.36%	34.3%
TOTAL LIABILITIES
Total Short-Term Liabilities	$276.6M	$285.1M	$285.1M
Total Long-Term Liabilities	$128.3M	$132.0M	$132.0M
Total Liabilities	$404.9M	$417.1M	$417.1M
YoY Change	7.11%	20.41%	20.41%
SHAREHOLDERS EQUITY
Retained Earnings	$358.3M	$319.5M
YoY Change	129.66%	168.74%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$901.7M	$864.9M	$864.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.307B	$1.282B	$1.282B
YoY Change	21.0%	26.47%	26.47%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$51.60M	$71.06M	$246.3M
YoY Change	8.17%	24.68%	34.51%
Depreciation, Depletion And Amortization	$3.775M	$3.569M	$13.07M
YoY Change	21.77%	19.24%	12.6%
Cash From Operating Activities	$42.22M	$65.57M	$156.9M
YoY Change	22.18%	-46.42%	-27.24%
INVESTING ACTIVITIES
Capital Expenditures	$1.620M	$10.16M	$20.66M
YoY Change	-27.68%	166.77%	93.35%
Acquisitions
YoY Change
Other Investing Activities	-$54.07M	-$16.50M	-$80.20M
YoY Change	75.5%	-92.25%	-67.47%
Cash From Investing Activities	-$55.69M	-$26.66M	-$100.9M
YoY Change	68.51%	-87.7%	-60.79%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-18.06M	-15.07M	-68.27M
YoY Change	8.31%	22.08%	4.26%
NET CHANGE
Cash From Operating Activities	42.22M	65.57M	156.9M
Cash From Investing Activities	-55.69M	-26.66M	-100.9M
Cash From Financing Activities	-18.06M	-15.07M	-68.27M
Net Change In Cash	-33.34M	23.84M	-12.40M
YoY Change	119.1%	-122.33%	-88.66%
FREE CASH FLOW
Cash From Operating Activities	$42.22M	$65.57M	$156.9M
Capital Expenditures	$1.620M	$10.16M	$20.66M
Free Cash Flow	$40.60M	$55.41M	$136.2M
YoY Change	25.63%	-53.27%	-33.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2023Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesNoncurrent
CY2023	dei	Entity Registrant Name EntityRegistrantName	AXCELIS TECHNOLOGIES INC
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32685000
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32775000
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesNoncurrent
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001113232
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	000-30941
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	34-1818596
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	108 Cherry Hill Drive
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Beverly
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	01915
CY2023	dei	City Area Code CityAreaCode	978
CY2023	dei	Local Phone Number LocalPhoneNumber	787-4000
CY2023	dei	Security12b Title Security12bTitle	Common Stock, $.001 par value
CY2023	dei	Trading Symbol TradingSymbol	ACLS
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
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	5962466683
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	32625760
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2023	dei	Auditor Location AuditorLocation	Boston, Massachusetts
CY2023	us-gaap	Revenues Revenues	1130604000
CY2022	us-gaap	Revenues Revenues	919998000
CY2021	us-gaap	Revenues Revenues	662428000
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	639303000
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	518208000
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	375983000
CY2023	us-gaap	Gross Profit GrossProfit	491301000
CY2022	us-gaap	Gross Profit GrossProfit	401790000
CY2021	us-gaap	Gross Profit GrossProfit	286445000
CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	96907000
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	78356000
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	65431000
CY2023	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	62805000
CY2022	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	53599000
CY2021	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	47548000
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	65794000
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	57474000
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46141000
CY2023	us-gaap	Operating Expenses OperatingExpenses	225506000
CY2022	us-gaap	Operating Expenses OperatingExpenses	189429000
CY2021	us-gaap	Operating Expenses OperatingExpenses	159120000
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	265795000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	212361000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	127325000
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	18199000
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	4551000
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	209000
CY2023	us-gaap	Interest Expense InterestExpense	5347000
CY2022	us-gaap	Interest Expense InterestExpense	5576000
CY2021	us-gaap	Interest Expense InterestExpense	4835000
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-48000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-6451000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2271000
CY2023	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	12804000
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7476000
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-6897000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	278599000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204885000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	120428000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32336000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21806000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21778000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	246263000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	183079000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	98650000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.52
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.54
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.94
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.43
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.46
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.88
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32758000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33043000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33555000
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33165000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33542000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34268000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	246263000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	183079000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	98650000
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	38000
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4058000
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1881000
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-84000
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-325000
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-211000
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	122000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3733000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1670000
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	246385000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	179346000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	96980000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167297000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	185595000
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	338851000
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	246571000
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	217964000
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	169773000
CY2023Q4	us-gaap	Inventory Net InventoryNet	306482000
CY2022Q4	us-gaap	Inventory Net InventoryNet	242406000
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	49397000
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	33300000
CY2023Q4	us-gaap	Assets Current AssetsCurrent	1079991000
CY2022Q4	us-gaap	Assets Current AssetsCurrent	877645000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53971000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39664000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	30716000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	12146000
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	16632000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	17942000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	6654000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	752000
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	53428000
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	31701000
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	40575000
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	33791000
CY2023Q4	us-gaap	Assets Assets	1281967000
CY2022Q4	us-gaap	Assets Assets	1013641000
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	54400000
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	62346000
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31445000
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	35540000
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	14098000
CY2022Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	8299000
CY2023Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	6164000
CY2022Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	4304000
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	164677000
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	123471000
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1511000
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1229000
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	12834000
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	12943000
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	285129000
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	248132000
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	43674000
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	45185000
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	46208000
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	31306000
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	42074000
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	21762000
CY2023Q4	us-gaap	Liabilities Liabilities	417085000
CY2022Q4	us-gaap	Liabilities Liabilities	346385000
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32685000
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32775000
CY2023Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	33000
CY2022Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	33000
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	547189000
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	550299000
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	319506000
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1129000
CY2023	acls	Provision For Excess And Obsolete Inventory ProvisionForExcessAndObsoleteInventory	5211000
CY2022	acls	Provision For Excess And Obsolete Inventory ProvisionForExcessAndObsoleteInventory	4565000
CY2021	acls	Provision For Excess And Obsolete Inventory ProvisionForExcessAndObsoleteInventory	3755000
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	12077000
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2252000
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	118892000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1846000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1968000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	864882000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	667256000
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1281967000
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1013641000
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	481602000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	98650000
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1881000
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-211000
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3687000
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1179000
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-6564000
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12067000
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	49992000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	538959000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	183079000
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4058000
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-325000
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1247000
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1662000
CY2022	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-9907000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13444000
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	57495000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	667256000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	246263000
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	38000
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-84000
CY2023	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	25000
CY2023	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2057000
CY2023	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-16611000
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	18269000
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	52499000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	864882000
CY2023	us-gaap	Profit Loss ProfitLoss	246263000
CY2022	us-gaap	Profit Loss ProfitLoss	183079000
CY2021	us-gaap	Profit Loss ProfitLoss	98650000
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13069000
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11607000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10818000
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-20018000
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8536000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20257000
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	18269000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	13444000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	12067000
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-12396000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-109333000
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5986000
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	50755000
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	67270000
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18146000
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	69957000
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	58433000
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	39023000
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	16046000
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	6533000
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3955000
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-8103000
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	31392000
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	22046000
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	56183000
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	86366000
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	45385000
CY2023	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3786000
CY2022	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3493000
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	253000
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	12337000
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	625000
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1917000
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	156869000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	215607000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	150190000
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20656000
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10683000
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8718000
CY2023	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	388809000
CY2022	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	246571000
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	308607000
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-100858000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-257254000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8718000
CY2023	acls	Net Settlement On Restricted Stock Grants NetSettlementOnRestrictedStockGrants	-16611000
CY2022	acls	Net Settlement On Restricted Stock Grants NetSettlementOnRestrictedStockGrants	-9907000
CY2021	acls	Net Settlement On Restricted Stock Grants NetSettlementOnRestrictedStockGrants	-6564000
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	52499000
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	57495000
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	49992000
CY2023	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2057000
CY2022	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1662000
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1179000
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1240000
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	987000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	763000
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	25000
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1247000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	91448000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186347000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	295680000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	204232000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	173951000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186347000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	295680000
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	54217000
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	10763000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3687000
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-68268000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-65480000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-52453000
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-139000
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-2206000
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	2429000
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1500000
CY2023	us-gaap	Interest Paid Net InterestPaidNet	4874000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	4992000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	5086000
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">(b) Use of Estimates</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">The preparation of these consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. On an ongoing basis, we evaluate our estimates and judgments, including those related to revenue recognition, the realizable value of accounts receivable and inventories, warranty reserves, valuing stock-based compensation instruments and reserves relating to tax assets and liabilities. Actual amounts could differ from these estimates. Changes in estimates are recorded in the period in which they become known.</p>
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-500000
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-6600000
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2500000
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2022	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2023	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2023Q4	acls	Deposit Relating To Customs Activity DepositRelatingToCustomsActivity	100000
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><b style="font-weight:bold;white-space:pre-wrap;"> (h) Concentration of Risk and Off-Balance Sheet Risk</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Financial instruments that potentially subject us to concentrations of credit risk are principally cash equivalents, short-term investments and accounts receivable. Our cash equivalents and short-term investments are principally maintained in investment grade money-market funds, U.S. Government and Agency Securities and deposit accounts.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">We have no significant off-balance-sheet risk such as currency exchange contracts, option contracts or other hedging arrangements.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Our exposure to market risk for changes in interest rates relates primarily to cash equivalents and short-term investments. The primary objective of our investment activities is to preserve principal without significantly increasing risk. This is accomplished by investing in marketable investment grade securities. We do not use derivative financial instruments to manage our investment portfolio and do not expect operating results or cash flows to be affected to any significant degree by any change in market interest rates.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">We perform ongoing credit evaluations of our customers’ financial condition and generally require no collateral to secure accounts receivable. For selected overseas sales, we require customers to obtain letters of credit before product is shipped. We maintain an allowance for doubtful accounts based on our assessment of the collectability of accounts receivable. We review the allowance for doubtful accounts quarterly. We do not have any off-balance sheet credit exposure related to our customers.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Our customers consist of semiconductor chip manufacturers located throughout the world and net sales to our ten largest customers accounted for 51.7%, 59.4% and 69.5% of revenue in 2023, 2022 and 2021, respectively.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">For the year ended December 31, 2023, we had no customers representing 10% or greater of total revenue. For the year ended December 31, 2022, we had two customers representing 13.1% and 11.5% of total revenue, respectively. For the year ended December 31, 2021, we had two customers representing 17.8% and 15.4% of total revenue, respectively. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">As of December 31, 2023, we had one customer account for 12.2% of consolidated accounts receivable. As of December 31, 2022, we had two customers account for 19.4% and 11.5% of consolidated accounts receivable, respectively. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Some of the components and sub-assemblies included in our products are obtained either from a sole source or a limited group of suppliers. Disruption to our supply source, resulting either from economic conditions or other factors, could affect our ability to deliver products to our customers.</p>
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	246263000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	183079000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	98650000
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32758000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33043000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33555000
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	407000
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	499000
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	713000
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33165000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33542000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34268000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.52
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.54
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.94
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.43
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.46
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.88
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6025000
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4929000
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2554000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1968000
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	122000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1846000
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1130604000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	919998000
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	662428000
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1130604000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	919998000
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	662428000
CY2022Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	154777000
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	68436000
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	23058000
CY2023	acls	Contract With Customer Liability Deferral Of Revenue ContractWithCustomerLiabilityDeferralOfRevenue	185688000
CY2022	acls	Contract With Customer Liability Deferral Of Revenue ContractWithCustomerLiabilityDeferralOfRevenue	146674000
CY2021	acls	Contract With Customer Liability Deferral Of Revenue ContractWithCustomerLiabilityDeferralOfRevenue	66349000
CY2023	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-129580000
CY2022	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-60333000
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-20971000
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	210885000
CY2022Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	154777000
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	68436000
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	210900000
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	164700000
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	46200000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167297000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	185595000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6654000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	752000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	173951000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186347000
CY2023Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	700000
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1117000
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	657000
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	460000
CY2023Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	218424000
CY2022Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	169773000
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	460000
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	217964000
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	169773000
CY2023Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	231200000
CY2022Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	187313000
CY2023Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	45373000
CY2022Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	35069000
CY2023Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	29909000
CY2022Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	20024000
CY2023Q4	us-gaap	Inventory Net InventoryNet	306482000
CY2022Q4	us-gaap	Inventory Net InventoryNet	242406000
CY2023	acls	Increase In Inventory Reserves IncreaseInInventoryReserves	1500000
CY2023	acls	Charges Related To Reflect Lower Of Cost Or Market Value ChargesRelatedToReflectLowerOfCostOrMarketValue	5200000
CY2022	acls	Charges Related To Reflect Lower Of Cost Or Market Value ChargesRelatedToReflectLowerOfCostOrMarketValue	4600000
CY2021	acls	Charges Related To Reflect Lower Of Cost Or Market Value ChargesRelatedToReflectLowerOfCostOrMarketValue	3800000
CY2023Q4	us-gaap	Other Inventory Materials Supplies And Merchandise Under Consignment OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment	6500000
CY2022Q4	us-gaap	Other Inventory Materials Supplies And Merchandise Under Consignment OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment	6400000
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	80404000
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	62918000
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	26433000
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	23254000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53971000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39664000
CY2023	us-gaap	Depreciation Depreciation	6200000
CY2022	us-gaap	Depreciation Depreciation	5100000
CY2021	us-gaap	Depreciation Depreciation	4200000
CY2023	us-gaap	Lessee Operating Lease Existence Of Option To Extend LesseeOperatingLeaseExistenceOfOptionToExtend	true
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	30716000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	12146000
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	16632000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	17942000
CY2023Q4	acls	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	47348000
CY2022Q4	acls	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	30088000
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4978000
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5367000
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1511000
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1229000
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25724000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	6931000
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	43674000
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	45185000
CY2023Q4	acls	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	75887000
CY2022Q4	acls	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	58712000
CY2023Q4	acls	Finance Lease Accumulated Depreciation FinanceLeaseAccumulatedDepreciation	46400000
CY2023Q4	us-gaap	Prepaid Rent PrepaidRent	600000
CY2022Q4	acls	Finance Lease Accumulated Depreciation FinanceLeaseAccumulatedDepreciation	45900000
CY2022Q4	us-gaap	Prepaid Rent PrepaidRent	600000
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	10669000
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	8340000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	6009000
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1310000
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1296000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1306000
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4874000
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4992000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	5086000
CY2023	acls	Finance Lease Cost FinanceLeaseCost	6184000
CY2022	acls	Finance Lease Cost FinanceLeaseCost	6288000
CY2021	acls	Finance Lease Cost FinanceLeaseCost	6392000
CY2023	us-gaap	Lease Cost LeaseCost	16853000
CY2022	us-gaap	Lease Cost LeaseCost	14628000
CY2021	us-gaap	Lease Cost LeaseCost	12401000
CY2023	acls	Short Term And Variable Lease Cost ShortTermAndVariableLeaseCost	2100000
CY2022	acls	Short Term And Variable Lease Cost ShortTermAndVariableLeaseCost	1800000
CY2021	acls	Short Term And Variable Lease Cost ShortTermAndVariableLeaseCost	1900000
CY2023Q4	us-gaap	Lessee Finance Lease Term Of Contract1 LesseeFinanceLeaseTermOfContract1	P22Y
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	6252000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6529000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due Next Twelve Months LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueNextTwelveMonths	12781000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	5930000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4970000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due Year Two LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearTwo	10900000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	6008000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3613000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due Year Three LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearThree	9621000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	6128000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2530000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due Year Four LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFour	8658000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	6251000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1926000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFive	8177000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	55336000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	23205000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due After Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueAfterYearFive	78541000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	85905000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	42773000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Payments Due LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue	128678000
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	40720000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	12071000
CY2023Q4	acls	Lessee Operating And Finance Lease Liability Undiscounted Excess Amount LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount	52791000
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	45185000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30702000
CY2023Q4	acls	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	75887000
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y6M
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P13Y1M6D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.055
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.105
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	10669000
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	8340000
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	6009000
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4874000
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3400000
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2700000
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2200000
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3200000
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3500000
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4992000
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	5086000
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1240000
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	987000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	763000
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	26890000
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6173000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8670000
CY2023	acls	Product Warranty Period ProductWarrantyPeriod	P1Y
CY2022Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10487000
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6924000
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	4612000
CY2023	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	12893000
CY2022	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	10597000
CY2021	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	7808000
CY2023	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	10230000
CY2022	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	6798000
CY2021	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	4282000
CY2023	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	3607000
CY2022	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-236000
CY2021	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-1214000
CY2023Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	16757000
CY2022Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10487000
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6924000
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	14098000
CY2022Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	8299000
CY2021Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	6424000
CY2023Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	2659000
CY2022Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	2188000
CY2021Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	500000
CY2023Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	16757000
CY2022Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10487000
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6924000
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2022	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3160000
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3516000
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	3160000
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	3516000
CY2023	us-gaap	Defined Benefit Plan Administration Expenses DefinedBenefitPlanAdministrationExpenses	1700000
CY2022	us-gaap	Defined Benefit Plan Administration Expenses DefinedBenefitPlanAdministrationExpenses	1500000
CY2021	us-gaap	Defined Benefit Plan Administration Expenses DefinedBenefitPlanAdministrationExpenses	1500000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5307
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y8M15D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0122
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2021	acls	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate	0.05
CY2022	acls	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate	0.05
CY2023	acls	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate	0.05
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18300000
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13400000
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12100000
CY2023	acls	Benefit Of Tax Deductions In Excess Of Compensation Cost BenefitOfTaxDeductionsInExcessOfCompensationCost	10200000
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2200000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32700000
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32800000
CY2023	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	304100000
CY2023	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2023	us-gaap	Revenues Revenues	1130604000
CY2022	us-gaap	Revenues Revenues	919998000
CY2021	us-gaap	Revenues Revenues	662428000
CY2023	us-gaap	Revenues Revenues	1130604000
CY2023Q4	us-gaap	Noncurrent Assets NoncurrentAssets	90904000
CY2022	us-gaap	Revenues Revenues	919998000
CY2022Q4	us-gaap	Noncurrent Assets NoncurrentAssets	69903000
CY2021	us-gaap	Revenues Revenues	662428000
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	66975000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	270842000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	198028000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	116380000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7757000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	6857000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	4048000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	278599000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204885000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	120428000
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	46871000
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8430000
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1985000
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1716000
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	82000
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3498000
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3124000
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1439000
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	52354000
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13270000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1521000
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-18526000
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	9097000
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	20521000
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-440000
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-102000
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	406000
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1052000
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-459000
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-670000
CY2023	acls	Deferred Income Tax Expense Benefit After Valuation Allowance Allocation DeferredIncomeTaxExpenseBenefitAfterValuationAllowanceAllocation	-20018000
CY2022	acls	Deferred Income Tax Expense Benefit After Valuation Allowance Allocation DeferredIncomeTaxExpenseBenefitAfterValuationAllowanceAllocation	8536000
CY2021	acls	Deferred Income Tax Expense Benefit After Valuation Allowance Allocation DeferredIncomeTaxExpenseBenefitAfterValuationAllowanceAllocation	20257000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32336000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21806000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21778000
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CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	58506000
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Files In Submission

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$ACLS
AXCELIS TECHNOLOGIES INC Stock $acls

2024 Q1 Form 10-K Financial Statement

#000155837024001628 Filed on February 23, 2024

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$ACLS AXCELIS TECHNOLOGIES INC Stock $acls

2024 Q1 Form 10-K Financial Statement

#000155837024001628 Filed on February 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ACLS
AXCELIS TECHNOLOGIES INC Stock $acls