XML 67 R55.htm IDEA: XBRL DOCUMENT v3.25.2

FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets:
Marketable securities	$ 1,317,039	$ 1,539,890
Certificates of deposit
Assets:
Marketable securities	22,576	125,092
Commercial paper
Assets:
Marketable securities	62,338	30,713
Corporate notes and bonds
Assets:
Marketable securities	418,953	449,570
U.S. Treasuries
Assets:
Marketable securities	122,276	111,612
U.S. Government agency securities
Assets:
Marketable securities	602,296	631,493
Recurring | Level 1
Assets:
Investments in debt securities	0	0
Investment in tax equity fund	0	0
Total assets measured at fair value	88,600	286,410
Warranty obligations:
Current	0	0
Non-current	0	0
Total warranty obligations measured at fair value	0	0
Total liabilities measured at fair value	0	0
Recurring | Level 1 | Certificates of deposit
Assets:
Marketable securities	0	0
Recurring | Level 1 | Commercial paper
Assets:
Marketable securities	0	0
Recurring | Level 1 | Corporate notes and bonds
Assets:
Marketable securities	0	0
Recurring | Level 1 | U.S. Treasuries
Assets:
Marketable securities	0	0
Recurring | Level 1 | U.S. Government agency securities
Assets:
Marketable securities	0	0
Recurring | Level 1 | Money market funds
Assets:
Cash, cash equivalents and restricted cash	88,600	191,410
Recurring | Level 1 | Certificates of deposit
Assets:
Cash, cash equivalents and restricted cash	0	95,000
Recurring | Level 1 | Commercial paper
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 1 | U.S. Treasuries
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 2
Assets:
Investments in debt securities	0	0
Investment in tax equity fund	0	0
Total assets measured at fair value	1,228,439	1,253,480
Warranty obligations:
Current	0	0
Non-current	0	0
Total warranty obligations measured at fair value	0	0
Total liabilities measured at fair value	0	0
Recurring | Level 2 | Certificates of deposit
Assets:
Marketable securities	22,576	30,092
Recurring | Level 2 | Commercial paper
Assets:
Marketable securities	27,515	30,713
Recurring | Level 2 | Corporate notes and bonds
Assets:
Marketable securities	418,953	449,570
Recurring | Level 2 | U.S. Treasuries
Assets:
Marketable securities	88,308	111,612
Recurring | Level 2 | U.S. Government agency securities
Assets:
Marketable securities	602,296	631,493
Recurring | Level 2 | Money market funds
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 2 | Certificates of deposit
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 2 | Commercial paper
Assets:
Cash, cash equivalents and restricted cash	34,823	0
Recurring | Level 2 | U.S. Treasuries
Assets:
Cash, cash equivalents and restricted cash	33,968	0
Recurring | Level 3
Assets:
Investments in debt securities	55,693	64,834
Investment in tax equity fund	1,698	0
Total assets measured at fair value	57,391	64,834
Warranty obligations:
Current	25,197	27,173
Non-current	156,982	143,743
Total warranty obligations measured at fair value	182,179	170,916
Total liabilities measured at fair value	182,179	170,916
Recurring | Level 3 | Certificates of deposit
Assets:
Marketable securities	0	0
Recurring | Level 3 | Commercial paper
Assets:
Marketable securities	0	0
Recurring | Level 3 | Corporate notes and bonds
Assets:
Marketable securities	0	0
Recurring | Level 3 | U.S. Treasuries
Assets:
Marketable securities	0	0
Recurring | Level 3 | U.S. Government agency securities
Assets:
Marketable securities	0	0
Recurring | Level 3 | Money market funds
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 3 | Certificates of deposit
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 3 | Commercial paper
Assets:
Cash, cash equivalents and restricted cash	0	0
Recurring | Level 3 | U.S. Treasuries
Assets:
Cash, cash equivalents and restricted cash	$ 0	$ 0

X

- Definition

Standard And Extended Product Warranty Accrual, Current, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	enph_StandardAndExtendedProductWarrantyAccrualCurrentFairValueDisclosure
Namespace Prefix:	enph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Standard And Extended Product Warranty Accrual, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	enph_StandardAndExtendedProductWarrantyAccrualFairValueDisclosure
Namespace Prefix:	enph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Standard And Extended Product Warranty Accrual, Noncurrent, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	enph_StandardAndExtendedProductWarrantyAccrualNoncurrentFairValueDisclosure
Namespace Prefix:	enph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Tax Equity Fund Investment, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	enph_TaxEquityFundInvestmentFairValueDisclosure
Namespace Prefix:	enph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Warranty Obligations

+ References

No definition available.

+ Details

Name:	enph_WarrantyObligationsAbstract
Namespace Prefix:	enph_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AssetsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480078/944-80-55-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480078/944-80-55-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481830/320-10-45-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

Name:	us-gaap_DebtSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount excluding accrued interest, of 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/2009/role/commonPracticeRef
-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

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=enph_CorporateBondSecuritiesAndNoteSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: