XML 70 R51.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
AMPTC, income tax payable benefit | $ 53,500,000 |  |
AMPTC, cost of revenues reduction | 53,500,000 |  |
Accrued interest receivable | $ 7,600,000 | $ 2,200,000 | $ 2,100,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current | Prepaid Expense and Other Assets, Current | Prepaid Expense and Other Assets, Current
Property and equipment impairment charge | $ 6,800,000 | $ 1,200,000 | $ 0
Goodwill, impairment loss | 0 | 0 | 0
Impairment of intangible assets | 3,807,000 | 0 | 0
Advertising costs | $ 3,800,000 | $ 3,800,000 | $ 16,200,000
Capitalized software costs |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Monitoring Hardware And Service |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Capitalized contract cost, amortization period | 7 years |  |
Communication Accessories |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Service period | 5 years |  |
Microinverter, First and Second Generation |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 15 years |  |
IQ Gateway And IQ Energy Router |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 5 years |  |
Minimum |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Intangible assets, estimated useful life | 9 years |  |
Period failure rate measurement lags product sale | 3 months |  |
Minimum | Capitalized software costs |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Minimum | Subscription Contracts |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Service period | 3 months |  |
Minimum | Battery Products |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 10 years |  |
Minimum | EV Charger |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 1 year |  |
Minimum | Third and Fourth Generation |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 5 years |  |
Maximum |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Property, plant and equipment, useful life | 10 years |  |
Intangible assets, estimated useful life | 5 years |  |
Period failure rate measurement lags product sale | 9 months |  |
Maximum | Capitalized software costs |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Maximum | Subscription Contracts |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Service period | 12 months |  |
Maximum | Microinverter, Subsequent Generations |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 25 years |  |
Maximum | Battery Products |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 15 years |  |
Maximum | EV Charger |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 5 years |  |
Maximum | Third and Fourth Generation |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Product warranty, term | 25 years |  |

X
- Definition Advanced Manufacturing Production Tax Credit, Cost Of Revenues, Offset + References No definition available. + Details
Name: | enph_AdvancedManufacturingProductionTaxCreditCostOfRevenuesOffset
Namespace Prefix: | enph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Advanced Manufacturing Production Tax Credit, Income Tax Payable Benefit + References No definition available. + Details
Name: | enph_AdvancedManufacturingProductionTaxCreditIncomeTaxPayableBenefit
Namespace Prefix: | enph_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Product Warranty, Estimated Failure Rate, Period Between Product Sale And Start Of Monitoring + References No definition available. + Details
Name: | enph_ProductWarrantyEstimatedFailureRatePeriodBetweenProductSaleAndStartOfMonitoring
Namespace Prefix: | enph_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Product Warranty Term + References No definition available. + Details
Name: | enph_ProductWarrantyTerm
Namespace Prefix: | enph_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue From Contract With Customer, Service Period + References No definition available. + Details
Name: | enph_RevenueFromContractWithCustomerServicePeriod
Namespace Prefix: | enph_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483406/720-35-50-1 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -SubTopic 40 -Topic 340 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-2 + Details
Name: | us-gaap_CapitalizedContractCostAmortizationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3B + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3A + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-30 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-31 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-32 + Details
Name: | us-gaap_FairValueOptionQuantitativeDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482548/350-20-55-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482573/350-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482573/350-20-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482598/350-20-45-2 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-3 + Details
Name: | us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483499/205-20-50-1 + Details
Name: | us-gaap_TangibleAssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_MonitoringHardwareAndServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_CommunicationAccessoriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_MicroinverterFirstAndSecondGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_IQGatewayAndIQEnergyRouterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_SubscriptionContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_BatteryProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_EVChargerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_ThirdandFourthGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=enph_MicroinverterSubsequentGenerationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |