3.23.2 html 216 266 1 false 57 0 false 6 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 100020 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Condensed Consolidated Statements of Operations (Unaudited) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfOperationsUnaudited Condensed Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 100040 - Statement - Condensed Consolidated Statements of Comprehensive Loss (Unaudited) Sheet http://www.ambarella.com/20230731/taxonomy/role/StatementCondensedConsolidatedStatementsOfComprehensiveLossUnaudited Condensed Consolidated Statements of Comprehensive Loss (Unaudited) Statements 5 false false R6.htm 100050 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfShareholdersEquityUnaudited Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Statements 6 false false R7.htm 100060 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 7 false false R8.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 8 false false R9.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 9 false false R10.htm 995455 - Disclosure - Organization and Summary of Significant Accounting Policies Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPolicies Organization and Summary of Significant Accounting Policies Notes 10 false false R11.htm 995465 - Disclosure - Financial Instruments and Fair Value Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValue Financial Instruments and Fair Value Notes 11 false false R12.htm 995475 - Disclosure - Inventories Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureInventories Inventories Notes 12 false false R13.htm 995485 - Disclosure - Property and Equipment, Net Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosurePropertyAndEquipmentNet Property and Equipment, Net Notes 13 false false R14.htm 995495 - Disclosure - Goodwill and Intangible Assets, Net Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNet Goodwill and Intangible Assets, Net Notes 14 false false R15.htm 995505 - Disclosure - Accrued and Other Current Liabilities Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureAccruedAndOtherCurrentLiabilities Accrued and Other Current Liabilities Notes 15 false false R16.htm 995515 - Disclosure - Leases Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeases Leases Notes 16 false false R17.htm 995525 - Disclosure - Other Long-Term Liabilities Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOtherLongTermLiabilities Other Long-Term Liabilities Notes 17 false false R18.htm 995535 - Disclosure - Capital Stock Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCapitalStock Capital Stock Notes 18 false false R19.htm 995545 - Disclosure - Stock-based Compensation Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensation Stock-based Compensation Notes 19 false false R20.htm 995555 - Disclosure - Net Loss Per Ordinary Share Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureNetLossPerOrdinaryShare Net Loss Per Ordinary Share Notes 20 false false R21.htm 995565 - Disclosure - Income Taxes Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 21 false false R22.htm 995575 - Disclosure - Commitments and Contingencies Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 22 false false R23.htm 995585 - Disclosure - Segment Reporting Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureSegmentReporting Segment Reporting Notes 23 false false R24.htm 995605 - Disclosure - Organization and Summary of Significant Accounting Policies (Policies) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPoliciesPolicies Organization and Summary of Significant Accounting Policies (Policies) Policies http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPolicies 24 false false R25.htm 995615 - Disclosure - Organization and Summary of Significant Accounting Policies (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPoliciesTables Organization and Summary of Significant Accounting Policies (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPolicies 25 false false R26.htm 995625 - Disclosure - Financial Instruments and Fair Value (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValueTables Financial Instruments and Fair Value (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValue 26 false false R27.htm 995635 - Disclosure - Inventories (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureInventoriesTables Inventories (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureInventories 27 false false R28.htm 995645 - Disclosure - Property and Equipment, Net (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetTables Property and Equipment, Net (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosurePropertyAndEquipmentNet 28 false false R29.htm 995655 - Disclosure - Goodwill and Intangible Assets, Net (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNetTables Goodwill and Intangible Assets, Net (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNet 29 false false R30.htm 995665 - Disclosure - Accrued and Other Current Liabilities (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureAccruedAndOtherCurrentLiabilitiesTables Accrued and Other Current Liabilities (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureAccruedAndOtherCurrentLiabilities 30 false false R31.htm 995675 - Disclosure - Leases (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeasesTables Leases (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeases 31 false false R32.htm 995685 - Disclosure - Other Long-Term Liabilities (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOtherLongTermLiabilitiesTables Other Long-Term Liabilities (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOtherLongTermLiabilities 32 false false R33.htm 995695 - Disclosure - Capital Stock (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCapitalStockTables Capital Stock (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCapitalStock 33 false false R34.htm 995705 - Disclosure - Stock-based Compensation (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationTables Stock-based Compensation (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensation 34 false false R35.htm 995715 - Disclosure - Net Loss Per Ordinary Share (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureNetLossPerOrdinaryShareTables Net Loss Per Ordinary Share (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/DisclosureNetLossPerOrdinaryShare 35 false false R36.htm 995725 - Disclosure - Income Taxes (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureIncomeTaxes 36 false false R37.htm 995735 - Disclosure - Segment Reporting (Tables) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureSegmentReportingTables Segment Reporting (Tables) Tables http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureSegmentReporting 37 false false R38.htm 995745 - Disclosure - Organization and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOrganizationAndSummaryOfSignificantAccountingPoliciesScheduleOfCashCashEquivalentsAndRestrictedCashDetail Organization and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Detail) Details 38 false false R39.htm 995755 - Disclosure - Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueScheduleOfAvailableforsaleSecuritiesAtFairValueDetail Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) Details 39 false false R40.htm 995765 - Disclosure - Financial Instruments and Fair Value - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValueAdditionalInformationDetail Financial Instruments and Fair Value - Additional Information (Detail) Details 40 false false R41.htm 995775 - Disclosure - Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueScheduleOfCashEquivalentsAndMarketableDebtSecuritiesDetail Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) Details 41 false false R42.htm 995785 - Disclosure - Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValueSummaryOfContractualMaturitiesOfInvestmentsDetail Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) Details 42 false false R43.htm 995795 - Disclosure - Financial Instruments and Fair Value - Schedule of Fair Value of Financial Instruments Measured on Recurring Basis (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureFinancialInstrumentsAndFairValueScheduleOfFairValueOfFinancialInstrumentsMeasuredOnRecurringBasisDetail Financial Instruments and Fair Value - Schedule of Fair Value of Financial Instruments Measured on Recurring Basis (Detail) Details 43 false false R44.htm 995805 - Disclosure - Inventories - Schedule of Inventory (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureInventoriesScheduleOfInventoryDetail Inventories - Schedule of Inventory (Detail) Details 44 false false R45.htm 995815 - Disclosure - Property and Equipment, Net - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetAdditionalInformationDetail Property and Equipment, Net - Additional Information (Detail) Details 45 false false R46.htm 995825 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetScheduleOfPropertyAndEquipmentDetail Property and Equipment, Net - Schedule of Property and Equipment (Detail) Details 46 false false R47.htm 995835 - Disclosure - Goodwill and Intangible Assets, Net - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNetAdditionalInformationDetail Goodwill and Intangible Assets, Net - Additional Information (Detail) Details 47 false false R48.htm 995845 - Disclosure - Goodwill and Intangible Assets, Net - Summary of Components of Intangible Assets (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNetSummaryOfComponentsOfIntangibleAssetsDetail Goodwill and Intangible Assets, Net - Summary of Components of Intangible Assets (Detail) Details 48 false false R49.htm 995855 - Disclosure - Goodwill and Intangible Assets, Net - Summary of Expected Future Amortization Expense Related to Intangible Assets (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsNetSummaryOfExpectedFutureAmortizationExpenseRelatedToIntangibleAssetsDetail Goodwill and Intangible Assets, Net - Summary of Expected Future Amortization Expense Related to Intangible Assets (Detail) Details 49 false false R50.htm 995865 - Disclosure - Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureAccruedAndOtherCurrentLiabilitiesScheduleOfAccruedAndOtherCurrentLiabilitiesDetail Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Detail) Details 50 false false R51.htm 995875 - Disclosure - Accrued and Other Current Liabilities - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureAccruedAndOtherCurrentLiabilitiesAdditionalInformationDetail Accrued and Other Current Liabilities - Additional Information (Detail) Details 51 false false R52.htm 995885 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 52 false false R53.htm 995895 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeasesScheduleOfSupplementalCashFlowInformationRelatedToLeasesDetail Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) Details 53 false false R54.htm 995905 - Disclosure - Leases - Schedule of Future Minimum Lease Payments for Lease Liabilities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureLeasesScheduleOfFutureMinimumLeasePaymentsForLeaseLiabilitiesDetail Leases - Schedule of Future Minimum Lease Payments for Lease Liabilities (Detail) Details 54 false false R55.htm 995925 - Disclosure - Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureOtherLongTermLiabilitiesScheduleOfOtherLongTermLiabilitiesDetail Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Detail) Details 55 false false R56.htm 995935 - Disclosure - Capital Stock - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCapitalStockAdditionalInformationDetail Capital Stock - Additional Information (Detail) Details 56 false false R57.htm 995945 - Disclosure - Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureCapitalStockScheduleOfOrdinarySharesReservedForFutureIssuanceUnderCompanysEquityPlansAndEmployeeStockPurchasePlanDetail Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan (Detail) Details 57 false false R58.htm 995955 - Disclosure - Stock-based Compensation - Classification of Stock-based Compensation (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationClassificationOfStockBasedCompensationDetail Stock-based Compensation - Classification of Stock-based Compensation (Detail) Details 58 false false R59.htm 995965 - Disclosure - Stock-based Compensation - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationAdditionalInformationDetail Stock-based Compensation - Additional Information (Detail) Details 59 false false R60.htm 995975 - Disclosure - Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationWeightedAverageAssumptionsUsedToEstimateFairValueDetail Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) Details 60 false false R61.htm 995985 - Disclosure - Stock-based Compensation - Stock Option Activities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationStockOptionActivitiesDetail Stock-based Compensation - Stock Option Activities (Detail) Details 61 false false R62.htm 995995 - Disclosure - Stock-based Compensation - Restricted Stock Unit Activities (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureStockBasedCompensationRestrictedStockUnitActivitiesDetail Stock-based Compensation - Restricted Stock Unit Activities (Detail) Details 62 false false R63.htm 996005 - Disclosure - Net Loss Per Ordinary Share - Computation of Basic and Diluted Loss Per Ordinary Share (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureNetLossPerOrdinaryShareComputationOfBasicAndDilutedLossPerOrdinaryShareDetail Net Loss Per Ordinary Share - Computation of Basic and Diluted Loss Per Ordinary Share (Detail) Details 63 false false R64.htm 996015 - Disclosure - Net Loss Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/DisclosureNetLossPerOrdinaryShareWeightedaveragePotentiallyDilutiveSecuritiesExcludedFromComputationOfDilutedNetLossPerOrdinaryShareDetail Net Loss Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share (Detail) Details 64 false false R65.htm 996025 - Disclosure - Income Taxes - Summary of Income Taxes (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureIncomeTaxesSummaryOfIncomeTaxesDetail Income Taxes - Summary of Income Taxes (Detail) Details 65 false false R66.htm 996035 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 66 false false R67.htm 996045 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 67 false false R68.htm 996055 - Disclosure - Segment Reporting - Additional Information (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureSegmentReportingAdditionalInformationDetail Segment Reporting - Additional Information (Detail) Details 68 false false R69.htm 996065 - Disclosure - Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) Sheet http://www.ambarella.com/20230731/taxonomy/role/Role_DisclosureSegmentReportingCompanySRevenueByGeographicRegionBasedOnBillToLocationDetail Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) Details 69 false false All Reports Book All Reports amba-20230731.htm amba-20230731.xsd amba-20230731_cal.xml amba-20230731_def.xml amba-20230731_lab.xml amba-20230731_pre.xml amba-ex31_1.htm amba-ex31_2.htm amba-ex32_1.htm http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 http://xbrl.sec.gov/ecd/2023 true true