$EFOI
ENERGY FOCUS, INC/DE Stock $efoi

$efoi Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000162828024012713 Filed on March 22, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$833.0K	$2.393M	$5.717M
YoY Change	-10.43%	260.94%	-4.21%
Cost Of Revenue	$713.0K	$2.318M	$5.494M
YoY Change	-21.91%	157.27%	-12.6%
Gross Profit	$120.0K	$75.00K	$223.0K
YoY Change	605.88%	-131.51%	-170.13%
Gross Profit Margin	14.41%	3.13%	3.9%
Selling, General & Admin	$591.0K	$696.0K	$3.607M
YoY Change	-44.56%	-44.54%	-49.54%
% of Gross Profit	492.5%	928.0%	1617.49%
Research & Development	$128.0K	$144.0K	$600.0K
YoY Change	-16.88%	-46.47%	-59.76%
% of Gross Profit	106.67%	192.0%	269.06%
Depreciation & Amortization	$8.000K	$13.00K	$33.00K
YoY Change	0.0%	-56.67%	-83.5%
% of Gross Profit	6.67%	17.33%	14.8%
Operating Expenses	$719.0K	$840.0K	$4.194M
YoY Change	-41.07%	-44.88%	-53.28%
Operating Profit	-$599.0K	-$765.0K	-$3.971M
YoY Change	-50.21%	-56.58%	-57.28%
Interest Expense	$5.000K	-$97.00K	$380.0K
YoY Change	-95.93%	-64.73%	-60.17%
% of Operating Profit
Other Income/Expense, Net	-$1.000K	$2.000K	-$26.00K
YoY Change	-85.71%	-97.1%	-53.57%
Pretax Income	-$418.0K	-$846.0K	-$4.290M
YoY Change	-68.64%	-63.31%	-58.25%
Income Tax		$3.000K	$3.000K
% Of Pretax Income
Net Earnings	-$418.0K	-$849.0K	-$4.293M
YoY Change	-68.64%	-63.25%	-58.32%
Net Earnings / Revenue	-50.18%	-35.48%	-75.09%
Basic Earnings Per Share
Diluted Earnings Per Share	-$0.09	-$0.19	-$1.33
COMMON SHARES
Basic Shares Outstanding	4.443M shares	4.349M shares	3.241M shares
Diluted Shares Outstanding	4.433M shares		3.241M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.488M	$2.822M	$2.822M
YoY Change	62.45%	338.2%	338.2%
Cash & Equivalents	$972.0K	$2.000M	$2.030M
Short-Term Investments	$516.0K	$792.0K	$792.0K
Other Short-Term Assets	$199.0K	$2.000K	$156.0K
YoY Change	-11.95%		-32.76%
Inventory	$4.397M	$4.439M	$4.439M
Prepaid Expenses
Receivables	$396.0K	$1.772M	$1.772M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$6.480M	$9.189M	$9.189M
YoY Change	-12.83%	26.88%	26.88%
LONG-TERM ASSETS
Property, Plant & Equipment	$937.0K	$1.011M	$1.011M
YoY Change	-20.53%	-19.51%	-19.51%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets	$937.0K	$1.011M	$1.011M
YoY Change	-20.53%	-19.51%	-19.51%
TOTAL ASSETS
Total Short-Term Assets	$6.480M	$9.189M	$9.189M
Total Long-Term Assets	$937.0K	$1.011M	$1.011M
Total Assets	$7.417M	$10.20M	$10.20M
YoY Change	-13.89%	20.03%	20.03%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.700M	$3.770M	$3.770M
YoY Change	24.02%	71.05%	71.05%
Accrued Expenses	$757.0K	$808.0K	$808.0K
YoY Change	-9.99%	-6.37%	-6.37%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$450.0K	$0.00
YoY Change	-100.0%	-80.1%	-100.0%
Long-Term Debt Due	$0.00	$1.323M	$1.323M
YoY Change	-100.0%	-49.47%	-49.47%
Total Short-Term Liabilities	$3.457M	$6.351M	$6.351M
YoY Change	-26.18%	-20.07%	-20.07%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$735.0K	$798.0K	$798.0K
YoY Change	-24.62%	-22.45%	-22.45%
Total Long-Term Liabilities	$735.0K	$798.0K	$798.0K
YoY Change	-24.62%	-22.45%	-22.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.457M	$6.351M	$6.351M
Total Long-Term Liabilities	$735.0K	$798.0K	$798.0K
Total Liabilities	$4.192M	$7.149M	$7.149M
YoY Change	-25.91%	-20.35%	-20.35%
SHAREHOLDERS EQUITY
Retained Earnings	-$153.7M	-$153.3M
YoY Change	2.25%	2.88%
Common Stock	$157.0M	$156.4M
YoY Change	2.38%	5.27%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.225M	$3.051M	$3.051M
YoY Change
Total Liabilities & Shareholders Equity	$7.417M	$10.20M	$10.20M
YoY Change	-13.89%	20.03%	20.03%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	-$418.0K	-$849.0K	-$4.293M
YoY Change	-68.64%	-63.25%	-58.32%
Depreciation, Depletion And Amortization	$8.000K	$13.00K	$33.00K
YoY Change	0.0%	-56.67%	-83.5%
Cash From Operating Activities	-$58.00K	-$69.00K	-$2.400M
YoY Change	-95.17%	-85.38%	-64.18%
INVESTING ACTIVITIES
Capital Expenditures		$39.00K	$69.00K
YoY Change			68.29%
Acquisitions
YoY Change
Other Investing Activities		$0.00	$0.00
YoY Change		-100.0%	-100.0%
Cash From Investing Activities		-$39.00K	-$69.00K
YoY Change		-256.0%	331.25%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$1.000M	446.0K	$4.486M
YoY Change	-169.83%	-2.62%	9.44%
NET CHANGE
Cash From Operating Activities	-$58.00K	-69.00K	-$2.400M
Cash From Investing Activities		-39.00K	-$69.00K
Cash From Financing Activities	-$1.000M	446.0K	$4.486M
Net Change In Cash	-$1.058M	338.0K	$1.978M
YoY Change	-524.9%	2972.73%	-175.21%
FREE CASH FLOW
Cash From Operating Activities	-$58.00K	-$69.00K	-$2.400M
Capital Expenditures		$39.00K	$69.00K
Free Cash Flow		-$108.0K	-$2.469M
YoY Change		-77.12%	-63.37%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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	001-36583
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	94-3021850
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	32000 Aurora Road
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite B
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Solon
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2023	dei	City Area Code CityAreaCode	440
CY2023	dei	Local Phone Number LocalPhoneNumber	715.1300
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	117000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.32
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.32
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	6000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-4293000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6700000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	-9295000	usd
CY2023	us-gaap	Interest Expense InterestExpense	380000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000924168
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Entity Registrant Name EntityRegistrantName	ENERGY FOCUS, INC/DE
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2023#AccountingStandardsUpdate201613Member
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.142857
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	44139
CY2023	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	true
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	2200000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	4443130	shares
CY2023	us-gaap	Interest Income Other InterestIncomeOther	57000	usd
CY2022	us-gaap	Interest Income Other InterestIncomeOther	0	usd
CY2023	dei	Auditor Firm AuditorFirmId	1808
CY2023	dei	Auditor Name AuditorName	GBQ Partners, LLC
CY2023	dei	Auditor Location AuditorLocation	Columbus, Ohio
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2030000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	52000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	20000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	4439000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	5476000	usd
CY2023Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	792000	usd
CY2022Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	592000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	156000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	232000	usd
CY2023Q4	efoi	Receivable For Claimed Employee Retention Tax Credit Current ReceivableForClaimedEmployeeRetentionTaxCreditCurrent	0	usd
CY2022Q4	efoi	Receivable For Claimed Employee Retention Tax Credit Current ReceivableForClaimedEmployeeRetentionTaxCreditCurrent	445000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	9189000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	7242000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	112000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	76000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	899000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1180000	usd
CY2023Q4	us-gaap	Assets Assets	10200000	usd
CY2022Q4	us-gaap	Assets Assets	8498000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	110000	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	145000	usd
CY2023Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	64000	usd
CY2022Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	0	usd
CY2023Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	199000	usd
CY2022Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	261000	usd
CY2023Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	62000	usd
CY2022Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	76000	usd
CY2023Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	150000	usd
CY2022Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	183000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	223000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	198000	usd
CY2023Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1323000	usd
CY2022Q4	us-gaap	Notes Payable Current NotesPayableCurrent	2618000	usd
CY2023Q4	efoi	Advanced Capital Contribution Current AdvancedCapitalContributionCurrent	450000	usd
CY2022Q4	efoi	Advanced Capital Contribution Current AdvancedCapitalContributionCurrent	0	usd
CY2023Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	usd
CY2022Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	1447000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	6351000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7946000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	798000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1029000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	7149000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	8975000	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
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CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	876447	shares
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CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	876447	shares
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CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	1406920	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	1406920	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	0	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	156369000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	148545000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3000	usd
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CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-153315000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-149020000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	3051000	usd
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CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8498000	usd
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CY2022	us-gaap	Revenues Revenues	5968000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	5494000	usd
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CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	587000	usd
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1491000	usd
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CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	7148000	usd
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CY2022	us-gaap	Operating Expenses OperatingExpenses	8977000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	-3971000	usd
CY2023	us-gaap	Interest Income Other InterestIncomeOther	57000	usd
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CY2022	us-gaap	Interest Expense InterestExpense	954000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-4290000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-10275000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3241000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3241000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1158000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1158000	shares
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-4293000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-10279000	usd
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CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6209000	usd
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CY2022	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	304000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-10279000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	-477000	usd
CY2023	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	6079000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	1716000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Stock Split AdjustmentsToAdditionalPaidInCapitalStockSplit	0	usd
CY2023	efoi	Stock Issued During Period Value Reverse Stock Splits StockIssuedDuringPeriodValueReverseStockSplits	-16000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	44000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-4293000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	3051000	usd
CY2023	us-gaap	Other Income OtherIncome	40000	usd
CY2022	us-gaap	Other Income OtherIncome	30000	usd
CY2023	efoi	Interest Paid Including Capitalized Interest Operating Activities InterestPaidIncludingCapitalizedInterestOperatingActivities	0	usd
CY2022	efoi	Interest Paid Including Capitalized Interest Operating Activities InterestPaidIncludingCapitalizedInterestOperatingActivities	40000	usd
CY2023	us-gaap	Depreciation Depreciation	33000	usd
CY2022	us-gaap	Depreciation Depreciation	159000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	44000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	117000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14000	usd
CY2023	us-gaap	Inventory Write Down InventoryWriteDown	25000	usd
CY2022	us-gaap	Inventory Write Down InventoryWriteDown	32000	usd
CY2023	efoi	Increase Decrease In Provision For Warranties IncreaseDecreaseInProvisionForWarranties	-33000	usd
CY2022	efoi	Increase Decrease In Provision For Warranties IncreaseDecreaseInProvisionForWarranties	-111000	usd
CY2023	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	225000	usd
CY2022	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	364000	usd
CY2023	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	0	usd
CY2022	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	338000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1012000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2358000	usd
CY2023	efoi	Increase Decrease In Vendor Prepayments IncreaseDecreaseInVendorPrepayments	200000	usd
CY2022	efoi	Increase Decrease In Vendor Prepayments IncreaseDecreaseInVendorPrepayments	-120000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-521000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-247000	usd
CY2023	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-47000	usd
CY2022	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-584000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-75000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	12000	usd
CY2023	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	0	usd
CY2022	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-268000	usd
CY2023	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	1854000	usd
CY2022	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	3566000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2439000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6713000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	69000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	41000	usd
CY2023	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	0	usd
CY2022	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	25000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-69000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16000	usd
CY2023	efoi	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	6079000	usd
CY2022	efoi	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	3500000	usd
CY2023	efoi	Payments For Offering Costs Associated With Reverse Stock Split PaymentsForOfferingCostsAssociatedWithReverseStockSplit	16000	usd
CY2022	efoi	Payments For Offering Costs Associated With Reverse Stock Split PaymentsForOfferingCostsAssociatedWithReverseStockSplit	0	usd
CY2023	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	usd
CY2022	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	334000	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6000	usd
CY2023	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	usd
CY2022	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	800000	usd
CY2023	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	usd
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	114000	usd
CY2023	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-1402000	usd
CY2022	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-768000	usd
CY2023	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	450000	usd
CY2022	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4486000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4099000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1978000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2630000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	52000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2682000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2030000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	52000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	380000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	364000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	1000	usd
CY2023	us-gaap	Debt Conversion Original Debt Amount1 DebtConversionOriginalDebtAmount1	1716000	usd
CY2022	us-gaap	Debt Conversion Original Debt Amount1 DebtConversionOriginalDebtAmount1	304000	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">NATURE OF OPERATIONS </span><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Energy Focus, Inc. engages primarily in the design, development, manufacturing, marketing and sale of energy-efficient lighting systems and controls. We develop, market and sell high quality light-emitting diode (“LED”) lighting and controls products in the commercial market and military maritime market (“MMM”). Our mission is to enable our customers to run their facilities with greater energy efficiency and productivity, and increased human health and wellness through advanced LED retrofit solutions. Our goal is to be the human wellness lighting and LED technology and market leader for the most demanding applications where performance, quality, value, environmental impact and health are considered paramount. We specialize in LED lighting retrofit by replacing fluorescent, high-intensity discharge lighting and other types of lamps in institutional buildings for primarily indoor lighting applications with our innovative, high-quality commercial and military-grade tubular LED (“TLED”) products, as well as other LED and lighting control products for commercial applications. We are also evaluating adjacent technologies including Gallium Nitride (“GaN”) based power supplies and additional market opportunities for energy solution products that support sustainability in our existing channels.</span></div>
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-4300000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-10300000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2400000	usd
CY2023Q4	efoi	Common Stock Minimum Bid Price CommonStockMinimumBidPrice	1.00
CY2022Q3	efoi	Common Stock Closing Bid Price Threshold CommonStockClosingBidPriceThreshold	1.00
CY2022Q3	efoi	Number Of Consecutive Days For Bid Price Below Threshold NumberOfConsecutiveDaysForBidPriceBelowThreshold	30	d
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2500000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	1500000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of estimates</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts in our financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s best knowledge of current events and actions that may impact us in the future, actual results may vary from the estimates. Estimates include, but are not limited to, the establishment of reserves for accounts receivable, sales returns, inventory obsolescence and warranty claims, the useful lives of property and equipment, valuation allowance for net deferred taxes, and stock-based compensation. The Company began using estimates for its calculation of allowance for doubtful accounts receivable under Accounting Standards Codification (“ASC”) 326, </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Measurement of Credit Losses on Financial Instruments</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> (“CECL”) commencing in 2023. In addition, estimates and assumptions associated with the determination of the fair value of financial instruments and evaluation of long-lived assets for impairment requires considerable judgment. Actual results could differ from those estimates and such differences could be material.</span></div>
CY2023	efoi	Contract With Customer Payment Terms ContractWithCustomerPaymentTerms	P30D
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26000	usd
CY2023	efoi	Accounts Receivable Allowance For Credit Loss Reserve AccountsReceivableAllowanceForCreditLossReserve	4000	usd
CY2023	us-gaap	Revenue Recognition Sales Returns Reserve For Sales Returns RevenueRecognitionSalesReturnsReserveForSalesReturns	12000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	20000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2000000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	52000	usd
CY2022	efoi	Increase Decrease In Inventory Levels Gross IncreaseDecreaseInInventoryLevelsGross	-1000000	usd
CY2022	efoi	Increase Decrease In Inventory Reserves IncreaseDecreaseInInventoryReserves	26000	usd
CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	600000	usd
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1500000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-10279000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3241000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3241000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1158000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1158000	shares
CY2023	us-gaap	Advertising Expense AdvertisingExpense	6000	usd
CY2022	us-gaap	Advertising Expense AdvertisingExpense	300000	usd
CY2023	efoi	Product Warranty Number Of Years For Product Sold ProductWarrantyNumberOfYearsForProductSold	P20Y
CY2023	efoi	Product Warranty Number Of Contracts Expired ProductWarrantyNumberOfContractsExpired	1	contract
CY2023	efoi	Product Warranty Number Of Years For Expired Contract ProductWarrantyNumberOfYearsForExpiredContract	P10Y
CY2022Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	183000	usd
CY2021Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	295000	usd
CY2023	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	10000	usd
CY2022	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	24000	usd
CY2023	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-43000	usd
CY2022	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-136000	usd
CY2023Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	150000	usd
CY2022Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	183000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	4439000	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Certain risks and concentrations</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We have certain customers whose net sales individually represented 10% or more of our total net sales, or whose net trade accounts receivable balance individually represented 10% or more of our total net trade accounts receivable as follows:</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">In 2023, two customers accounted for 48% of net sales, with sales to our primary distributor for the U.S. Navy accounting for approximately 35% and sales to a shipbuilder for the U.S. Navy accounting for approximately 13%. In 2022, two customers accounted for 27% of net sales, with sales to our primary distributor for the U.S. Navy accounting for approximately 13% and sales to a regional commercial lighting retrofit company accounting for approximately 14% of net sales.</span></div><div style="text-align:justify"><span><br/></span></div><div style="margin-bottom:10pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">At December 31, 2023, one distributor to the U.S. Department of Defense accounted for 74% of our net trade accounts receivable, when combined with our net trade accounts receivable to shipbuilders for the U.S. Navy, total net accounts </span></div><div style="margin-bottom:10pt;padding-left:36pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">receivable related to U.S. Navy sales is 78% of total net accounts receivable. At December 31, 2022, a distributor to the U.S. Department of Defense accounted for 25% of our net trade accounts receivable, when combined with our net trade accounts receivable to shipbuilders for the U.S. Navy, total net accounts receivable related to U.S. Navy sales is 30% of total net accounts receivable. </span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We require substantial amounts of purchased materials from selected vendors. With specific materials, all of our purchases are from a single vendor. The availability and costs of materials may be subject to change due to, among other things, new laws or regulations, suppliers’ allocation to other purchasers, interruptions in production by suppliers, global health issues such as the COVID-19 pandemic, and changes in exchange rates and worldwide price and demand levels. Our inability to obtain adequate supplies of materials for our products at favorable prices could have a material adverse effect on our business, financial position, or results of operations by decreasing our profit margins and by hindering our ability to deliver products to our customers on a timely basis. Additionally, certain vendors require advance deposits prior to the fulfillment of orders. Deposits paid on unfulfilled orders totaled $0.8 million and $0.6 million at December 31, 2023 and 2022, respectively.</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We have certain vendors who individually represented 10% or more of our total expenditures, or whose net trade accounts payable balance individually represented 10% or more of our total net trade accounts payable, as follows:</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">One offshore supplier, a related party, accounted for approximately 28.0% of our total expenditures for the twelve months ended December 31, 2023. At December 31, 2023, two offshore suppliers accounted for approximately 16% and 57% (the latter a related party, see Note 13 “Related Party Transactions”) of our trade accounts payable balance. </span></div><div style="margin-bottom:10pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">One offshore supplier accounted for approximately 16% of our total expenditures for the twelve months ended December 31, 2022. At December 31, 2022, this same offshore supplier accounted for approximately 36% of our trade accounts payable balance.</span></div>
CY2023Q4	us-gaap	Supplies Supplies	800000	usd
CY2022Q4	us-gaap	Supplies Supplies	600000	usd
CY2023Q4	efoi	Number Of Offshore Supplier NumberOfOffshoreSupplier	2	supplier
CY2022Q4	efoi	Number Of Offshore Supplier NumberOfOffshoreSupplier	1	supplier
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y6M
CY2023	us-gaap	Sublease Income SubleaseIncome	0	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	90000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	461000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	501000	usd
CY2023	efoi	Operating Lease Cost Net Of Sublease Income OperatingLeaseCostNetOfSubleaseIncome	461000	usd
CY2022	efoi	Operating Lease Cost Net Of Sublease Income OperatingLeaseCostNetOfSubleaseIncome	411000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	899000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1180000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1021000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1227000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	5476000	usd
CY2022Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	2527000	usd
CY2021Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	3050000	usd
CY2023	efoi	Inventory Valuation Reserves Provision Accrual InventoryValuationReservesProvisionAccrual	-404000	usd
CY2022	efoi	Inventory Valuation Reserves Provision Accrual InventoryValuationReservesProvisionAccrual	-312000	usd
CY2023	efoi	Inventory Valuation Reserves Sales Of Inventory InventoryValuationReservesSalesOfInventory	378000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	379000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	385000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	390000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	197000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1351000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	330000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1021000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	383000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	423000	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1000	usd
CY2023Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	2189000	usd
CY2022Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	3347000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	4803000	usd
CY2022Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	4656000	usd
CY2023Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2553000	usd
CY2022Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2527000	usd
CY2022	efoi	Inventory Valuation Reserves Sales Of Inventory InventoryValuationReservesSalesOfInventory	323000	usd
CY2023	efoi	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	0	usd
CY2022	efoi	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	512000	usd
CY2023Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	2553000	usd
CY2022Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	2527000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	1461000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	1392000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1349000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1316000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	112000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	76000	usd
CY2023	us-gaap	Depreciation Depreciation	33000	usd
CY2022	us-gaap	Depreciation Depreciation	159000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	338000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	usd
CY2023Q4	us-gaap	Prepaid Insurance PrepaidInsurance	32000	usd
CY2022Q4	us-gaap	Prepaid Insurance PrepaidInsurance	63000	usd
CY2023Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	81000	usd
CY2022Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	130000	usd
CY2023Q4	us-gaap	Prepaid Rent PrepaidRent	41000	usd
CY2022Q4	us-gaap	Prepaid Rent PrepaidRent	39000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	2000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	0	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	156000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	232000	usd
CY2023	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	600018	shares
CY2022	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	600018	shares
CY2023Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	usd
CY2022Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	1447000	usd
CY2023Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1323000	usd
CY2022Q4	us-gaap	Notes Payable Current NotesPayableCurrent	2618000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	450000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	usd
CY2023Q4	us-gaap	Debt Current DebtCurrent	1773000	usd
CY2022Q4	us-gaap	Debt Current DebtCurrent	4879000	usd
CY2020Q3	efoi	Debt Instrument Number Of Credit Facilities DebtInstrumentNumberOfCreditFacilities	2	creditfacility
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	450000	usd
CY2023Q4	us-gaap	Purchase Obligation PurchaseObligation	500000	usd
CY2023Q4	efoi	Purchase Obligation Percentage PurchaseObligationPercentage	0.49
CY2023Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	0.0001
CY2023Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2020Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q1	efoi	Percentage Of Series A Preferred Stock Eligible To Vote PercentageOfSeriesAPreferredStockEligibleToVote	0.01582
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	876447	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	876447	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	876447	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	876447	shares
CY2022Q4	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	25000	shares
CY2023Q4	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	25000	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercised ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised	0	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercised ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised	0	shares
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	44000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	117000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	64000	usd
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	128000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y8M12D
CY2022	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y9M18D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	38032	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	24.30
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	32317	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	6.67
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	22893	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	21.00
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	318	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	19.52
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	36	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	10.18
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	47102	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.78
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	11427	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	3.04
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	24076	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.55
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	3878	shares
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CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	30575	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.60
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	25679	shares
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CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	8068	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.53
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CY2023Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	5.60
CY2023Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	8068	shares
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P8Y3M18D
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CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.045
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.013
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CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.041
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.041
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.000
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1195000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1458000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	197000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	294000	usd
CY2023Q4	efoi	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	224000	usd
CY2022Q4	efoi	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	306000	usd
CY2023Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	470000	usd
CY2022Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	438000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	20935000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	18856000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22627000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20764000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	6300000	usd
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	9200000	usd
CY2023Q4	efoi	Deferred Tax Assets Operating Loss Carryforwards Portion Available After Application Of Irc Section382 Limitations DeferredTaxAssetsOperatingLossCarryforwardsPortionAvailableAfterApplicationOfIRCSection382Limitations	84300000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	6300000	usd
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	9200000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	900000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	usd
CY2023	us-gaap	Revenues Revenues	5717000	usd
CY2022	us-gaap	Revenues Revenues	5968000	usd
CY2023	us-gaap	Revenues Revenues	5717000	usd
CY2022	us-gaap	Revenues Revenues	5968000	usd
CY2022Q4	efoi	Longlived Assets Locatedin Us Percent LonglivedAssetsLocatedinUSPercent	1
CY2023Q4	efoi	Longlived Assets Locatedin Us Percent LonglivedAssetsLocatedinUSPercent	1
CY2021Q3	efoi	Payroll Tax Credit Employee Retention Credit Under The Cares Act PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESAct	431000	usd
CY2021Q2	efoi	Payroll Tax Credit Employee Retention Credit Under The Cares Act Current PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESActCurrent	445000	usd

Files In Submission

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report.css	Edgar Link	pending
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efoi-20231231_cal.xml	Edgar Link	unprocessable

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$EFOI
ENERGY FOCUS, INC/DE Stock $efoi

2024 Q1 Form 10-K Financial Statement

#000162828024012713 Filed on March 22, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFOI ENERGY FOCUS, INC/DE Stock $efoi

2024 Q1 Form 10-K Financial Statement

#000162828024012713 Filed on March 22, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFOI
ENERGY FOCUS, INC/DE Stock $efoi