$EFOI
ENERGY FOCUS, INC/DE Stock $efoi

$efoi Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000092416821000014 Filed on March 25, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$3.746M	$3.531M	$2.915M
YoY Change	6.09%	13.25%	-43.49%
Cost Of Revenue	$2.310M	$2.570M	$1.887M
YoY Change	-10.12%	-17.1%	-51.33%
Gross Profit	$1.434M	$957.0K	$1.028M
YoY Change	49.84%	4936.84%	-19.75%
Gross Profit Margin	38.28%	27.1%	35.27%
Selling, General & Admin	$1.900M	$1.930M	$1.689M
YoY Change	-1.55%	-11.47%	-33.58%
% of Gross Profit	132.5%	201.67%	164.3%
Research & Development	$420.0K	$250.0K	$191.0K
YoY Change	68.0%	-62.12%	-70.06%
% of Gross Profit	29.29%	26.12%	18.58%
Depreciation & Amortization	$40.00K	$50.00K	$77.00K
YoY Change	-20.0%	-58.33%	-23.0%
% of Gross Profit	2.79%	5.22%	7.49%
Operating Expenses	$2.320M	$2.180M	$1.861M
YoY Change	6.42%	-22.97%	-41.51%
Operating Profit	-$886.0K	-$1.223M	-$833.0K
YoY Change	-27.56%	-56.49%	-56.18%
Interest Expense	$1.050M	-$180.0K	$67.00K
YoY Change	-683.33%		3250.0%
% of Operating Profit
Other Income/Expense, Net	-$10.00K	$50.00K	-$46.00K
YoY Change	-120.0%	-600.0%	170.59%
Pretax Income	$60.00K	-$1.300M	-$950.0K
YoY Change	-104.62%	-56.52%	-50.52%
Income Tax	$0.00	$10.00K	$0.00
% Of Pretax Income	0.0%
Net Earnings	$65.00K	-$1.308M	-$946.0K
YoY Change	-104.97%	-56.4%	-50.73%
Net Earnings / Revenue	1.74%	-37.04%	-32.45%
Basic Earnings Per Share	$0.01
Diluted Earnings Per Share	$0.01	-$528.2K	-$384.6K
COMMON SHARES
Basic Shares Outstanding	3.491M shares	12.37M shares	12.37M shares
Diluted Shares Outstanding	4.307M shares		12.37M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.630M	$350.0K	$630.0K
YoY Change	651.43%	-94.48%	-91.06%
Cash & Equivalents	$1.836M	$350.0K	$292.0K
Short-Term Investments	$800.0K
Other Short-Term Assets	$1.000K	$480.0K	$640.0K
YoY Change	-99.79%	-55.96%	-49.21%
Inventory	$5.641M	$6.168M	$7.399M
Prepaid Expenses
Receivables	$2.021M	$2.337M	$1.782M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$11.08M	$9.334M	$10.46M
YoY Change	18.66%	-47.23%	-40.94%
LONG-TERM ASSETS
Property, Plant & Equipment	$420.0K	$389.0K	$375.0K
YoY Change	7.97%	-36.23%	-47.41%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$0.00	$405.0K	$206.0K
YoY Change	-100.0%	108.76%	40.14%
Total Long-Term Assets	$1.321M	$2.405M	$2.371M
YoY Change	-45.07%	199.13%	175.7%
TOTAL ASSETS
Total Short-Term Assets	$11.08M	$9.334M	$10.46M
Total Long-Term Assets	$1.321M	$2.405M	$2.371M
Total Assets	$12.40M	$11.74M	$12.83M
YoY Change	5.61%	-36.52%	-30.9%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.477M	$1.340M	$1.228M
YoY Change	84.85%	-62.84%	-59.09%
Accrued Expenses	$1.412M	$1.012M	$1.650M
YoY Change	39.53%	-26.93%	1220.0%
Deferred Revenue	$72.00K
YoY Change
Short-Term Debt	$2.300M	$2.420M	$3.000M
YoY Change	-4.96%	9.01%
Long-Term Debt Due	$530.0K	$890.0K	$0.00
YoY Change	-40.45%
Total Short-Term Liabilities	$7.557M	$6.542M	$6.242M
YoY Change	15.52%	-9.64%	36.56%
LONG-TERM LIABILITIES
Long-Term Debt	$270.0K	$110.0K	$10.00K
YoY Change	145.45%
Other Long-Term Liabilities	$0.00	$14.00K	$20.00K
YoY Change	-100.0%	-93.0%	-86.84%
Total Long-Term Liabilities	$0.00	$14.00K	$20.00K
YoY Change	-100.0%	-93.0%	-86.84%
TOTAL LIABILITIES
Total Short-Term Liabilities	$7.557M	$6.542M	$6.242M
Total Long-Term Liabilities	$0.00	$14.00K	$20.00K
Total Liabilities	$8.142M	$7.743M	$7.588M
YoY Change	5.15%	4.07%	60.66%
SHAREHOLDERS EQUITY
Retained Earnings	-$130.9M	-$124.9M	-$123.6M
YoY Change	4.79%	6.44%	8.09%
Common Stock	$135.1M	$128.9M	$128.8M
YoY Change	4.84%	0.39%	0.51%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.255M	$3.996M	$5.240M
YoY Change
Total Liabilities & Shareholders Equity	$12.40M	$11.74M	$12.83M
YoY Change	5.61%	-36.52%	-30.9%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$65.00K	-$1.308M	-$946.0K
YoY Change	-104.97%	-56.4%	-50.73%
Depreciation, Depletion And Amortization	$40.00K	$50.00K	$77.00K
YoY Change	-20.0%	-58.33%	-23.0%
Cash From Operating Activities	-$870.0K	-$290.0K	-$1.210M
YoY Change	200.0%	-90.17%	-21.94%
INVESTING ACTIVITIES
Capital Expenditures	-$50.00K	-$70.00K	-$30.00K
YoY Change	-28.57%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$0.00	$0.00
YoY Change		-100.0%
Cash From Investing Activities	-$50.00K	-$70.00K	-$30.00K
YoY Change	-28.57%	-800.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	180.0K	400.0K	-330.0K
YoY Change	-55.0%	-82.06%	1550.0%
NET CHANGE
Cash From Operating Activities	-870.0K	-290.0K	-1.210M
Cash From Investing Activities	-50.00K	-70.00K	-30.00K
Cash From Financing Activities	180.0K	400.0K	-330.0K
Net Change In Cash	-740.0K	40.00K	-1.570M
YoY Change	-1950.0%	-105.63%	0.0%
FREE CASH FLOW
Cash From Operating Activities	-$870.0K	-$290.0K	-$1.210M
Capital Expenditures	-$50.00K	-$70.00K	-$30.00K
Free Cash Flow	-$820.0K	-$220.0K	-$1.180M
YoY Change	272.73%	-92.54%	-23.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000924168
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Entity Registrant Name EntityRegistrantName	ENERGY FOCUS, INC/DE
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CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-36583
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	94-3021850
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	32000 Aurora Road
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite B
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Solon
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	44139
CY2020	dei	City Area Code CityAreaCode	440
CY2020	dei	Local Phone Number LocalPhoneNumber	715.1300
CY2020	dei	Security12b Title Security12bTitle	Common stock, par value $0.0001 per share
CY2020	dei	Trading Symbol TradingSymbol	EFOI
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2019	us-gaap	Net Income Loss NetIncomeLoss	-7373000	USD
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CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	100000	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2749000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	510000	USD
CY2020	us-gaap	Stock And Warrants Issued During Period Value Preferred Stock And Warrants StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants	2235000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	-1636000	USD
CY2020	efoi	Adjustments To Additional Paid In Capital Warrant Reclassified AdjustmentsToAdditionalPaidInCapitalWarrantReclassified	1405000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	131000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5981000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4255000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5981000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-7373000	USD
CY2020	us-gaap	Depreciation Depreciation	184000	USD
CY2019	us-gaap	Depreciation Depreciation	326000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	131000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	616000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	1086000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-20000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-5000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2214000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	610000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	-14000	USD
CY2020	efoi	Increase Decrease In Provision For Warranties IncreaseDecreaseInProvisionForWarranties	31000	USD
CY2019	efoi	Increase Decrease In Provision For Warranties IncreaseDecreaseInProvisionForWarranties	78000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	395000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	108000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-8000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-24000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-377000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	131000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1137000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1876000	USD
CY2020	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	670000	USD
CY2019	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-699000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	18000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	88000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1096000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-542000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	349000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	54000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-12000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	3530000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	749000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2451000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6624000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	223000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	132000	USD
CY2020	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	0	USD
CY2019	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	3000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-223000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-129000	USD
CY2020	efoi	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	2749000	USD
CY2019	efoi	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	0	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	918000	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	0	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	510000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2020	efoi	Proceeds From Paycheck Protection Program ProceedsFromPaycheckProtectionProgram	795000	USD
CY2019	efoi	Proceeds From Paycheck Protection Program ProceedsFromPaycheckProtectionProgram	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	100000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	110000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	320000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	208000	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	1115000	USD
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	1306000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	1700000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	269000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4160000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1094000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	0	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1486000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5643000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	692000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6335000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2178000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	692000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1836000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	350000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	342000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	342000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2178000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	692000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	215000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	4000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	15000	USD
CY2020	us-gaap	Nature Of Operations NatureOfOperations	NATURE OF OPERATIONS<div style="text-indent:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div><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 and recently announced development of ultraviolet light disinfection (“UVCD”) products. We develop, market and sell high quality light-emitting diode (“LED”) lighting products and UVCD products and controls in the commercial and military maritime markets (“MMM”). Our mission is to enable our customers to run their facilities and offices with greater energy efficiency, productivity, and human health through advanced LED retrofit and UVCD solutions. Our goal is to be the LED and human-centric lighting (“HCL”) technology and market leader for the most demanding applications where performance, quality, value (high quality at an affordable price), 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 tubular LED (“TLED”), as well as other LED and lighting control products. On October 14, 2020, we also announced the launch of our UVCD product portfolio.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The LED lighting industry has changed dramatically over the past several years due to increasing commoditization, competition and price erosion. We have been experiencing these industry forces in both our military business since 2016 and in our commercial segment, where we once commanded significant price premiums for our flicker-free TLEDs with primarily 10-year warranties. Since April 2019, we have focused on redesigning our products for lower costs and consolidating our supply chain for stronger purchasing power where appropriate in order to price our products more competitively. Despite these efforts, the pricing of our legacy products remains at a premium to the competitive range and we expect aggressive pricing actions and commoditization to continue to be a headwind until our more differentiated new products ramp in volume. These trends are not unique to Energy Focus as evidenced by the increasing number of industry peers facing challenges, exiting LED lighting, selling assets and even going out of business. In addition to continuous, scheduled cost reductions, our strategy to combat these trends is to move up the value chain, with more innovative and differentiated products and solutions that offer greater, distinct value to our customers. Two specific examples of these</span><span style="color:#ee2724;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%">products we have recently developed include the RedCap</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:7.8pt;font-style:italic;font-weight:400;line-height:120%;position:relative;top:-4.2pt;vertical-align:baseline">®</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, our emergency backup battery integrated TLED, and EnFocus™, our new dimmable/tunable lighting and control platform that we launched in 2020. We believe our revamped go-to-market strategy that focuses more on direct-sales and additional sales representatives and listens to the voice of the customer has led to better and more impactful product development efforts and will eventually translate into larger addressable market and greater sales growth for us.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">During 2020, we continued to see the benefits from the relaunch efforts (described below) undertaken by the new, current management team, in addition to a number of strategic sourcing projects completed during 2020. It is our belief that the continued momentum of the efforts undertaken in 2019 and into 2020, along with the development and launch of new and innovative products, will over time result in improved sales and bottom-line performance for the Company. We launched our EnFocus™ platform during the second quarter of 2020 and continued to receive positive feedback from existing, new, and prospective customers. The EnFocus™ platform offers two immediately available product lines: EnFocus™ DM, which provides a dimmable lighting solution, and EnFocus™ DCT, which provides both a dimmable and color tunable lighting solution. EnFocus™ enables buildings to have dimmable, color tunable and circadian-ready lighting using existing wiring, without requiring any wireless communications, through a relatively simple upgrade with EnFocus™ switches and tubular LEDs, a more environmentally sustainable solution compared with replacing each lighting fixture.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">In addition, in response to the COVID-19 pandemic and an anticipated increase in sanitation and hygiene demand for buildings, facilities and homes, we started developing advanced UVCD products for both consumer as well as the commercial and industrial markets in the first quarter of 2020. We announced the following three UVCD products in October 2020: abUV™ circadian lighting and UVCD air disinfection integrated troffers controlled by the EnFocus™ platform technology; the nUVo™ portable disinfection device for offices and homes; and the mUVe™ autonomous robot designed for surface disinfection.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">Since April 2019, we experienced significant change at the Company. Prior to James Tu returning as Chief Executive Officer and Chairman at the beginning of April 2019, the Company had experienced significant sales declines, operating losses and increases in its inventory. Immediately upon Mr. Tu returning to the Company, significant additional restructuring efforts were undertaken. The Company has since then replaced the entire senior management team, significantly reduced non-critical expenses, minimized the amount of inventory the Company was purchasing, dramatically changed the composition of our board of directors, as well as adding very selectively to the executive team by hiring Tod Nestor as President and Chief Financial Officer at the beginning of July 2019 and James R. Warren as Senior Vice President, General Counsel and Corporate Secretary in September 2020, in addition to recruiting new departmental leaders across the Company. The cost savings efforts undertaken included the Company implementing phased actions to reduce costs to minimize cash usage. Our initial actions included the elimination of certain positions, restructuring of the sales organization and incentive plan, flattening of the senior management </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">team, additional operational streamlining, management compensation reductions, and outsourcing of certain functions including certain elements of supply chain and marketing.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">On June 11, 2020, in accordance with previous stockholder approval, our Board of Directors effected a 1-for-5 (the “Split Ratio”) reverse stock split of the Company’s common stock, par value $0.0001 per share. The reverse stock split became effective immediately upon the filing of the Certificate of Amendment to the Company’s Certificate of Incorporation, as amended (the “Certificate of Incorporation”), with the Delaware Secretary of State (the “Effective Time”). At the Effective Time, every five shares of common stock issued and outstanding automatically combined into one validly issued, fully paid and non-assessable share of common stock. No fractional shares were issued as a result of the reverse stock split. The $0.0001 par value per share of common stock and other terms of the common stock were not affected by the reverse stock split. The number of authorized shares of common stock under the Certificate of Incorporation remained unchanged at 50,000,000 shares. Proportional adjustments were made to the conversion and exercise prices of our outstanding warrants and stock options, and to the number of shares issued and issuable under our stock incentive plans in connection with the reverse stock split. The information presented in the financial statements for all prior periods have been retroactively adjusted to reflect the reverse stock split. Preferred shares outstanding were not affected by the reverse stock split and, as such, those shares have not been adjusted.</span></div>
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div><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="text-indent:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div><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 conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods presented. Estimates include, but are not limited to, the establishment of reserves for accounts receivable, sales returns, inventory excess and obsolescence reserve and warranty claims, the useful lives for property and equipment and stock-based compensation. 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>
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercised ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised	269240	shares
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	918000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2200000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	700000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2200000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	300000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	300000	USD
CY2019	efoi	Increase Decrease In Inventory Reserves IncreaseDecreaseInInventoryReserves	600000	USD
CY2020	efoi	Increase Decrease In Inventory Levels Gross IncreaseDecreaseInInventoryLevelsGross	-1200000	USD
CY2020	efoi	Increase Decrease In Inventory Reserves IncreaseDecreaseInInventoryReserves	600000	USD
CY2020	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	1600000	USD
CY2020Q4	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	467306	shares
CY2020	efoi	Contract With Customer Payment Terms ContractWithCustomerPaymentTerms	P30D
CY2020Q4	efoi	Deferred Tax Assets Operating Loss Carryforwards Portion Available After Application Of Irc Section382 Limitations DeferredTaxAssetsOperatingLossCarryforwardsPortionAvailableAfterApplicationOfIRCSection382Limitations	61500000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	7100000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	8300000	USD
CY2017Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	37300000	USD
CY2020Q1	efoi	Payments For Clearing Fees PaymentsForClearingFees	231000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	510000	USD
CY2020Q1	efoi	Proceeds From The Issuance Of Common Stock And Warrants Net Of Issuance Costs ProceedsFromTheIssuanceOfCommonStockAndWarrantsNetOfIssuanceCosts	2300000	USD
CY2020Q1	efoi	Debt Instrument Proceeds To Be Paid To Lender Percent DebtInstrumentProceedsToBePaidToLenderPercent	0.10
CY2020Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	275000	USD
CY2020Q4	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	467306	shares
CY2020Q4	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	3.51
CY2020	efoi	Adjustments To Additional Paid In Capital Warrant Reclassified AdjustmentsToAdditionalPaidInCapitalWarrantReclassified	1400000	USD
CY2019Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current OtherDeferredCompensationArrangementsLiabilityCurrent	0	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	1636000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	1317000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	1086000	USD
CY2020	efoi	Adjustments To Additional Paid In Capital Warrant Reclassified AdjustmentsToAdditionalPaidInCapitalWarrantReclassified	1405000	USD
CY2020Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current OtherDeferredCompensationArrangementsLiabilityCurrent	0	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div><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="text-indent:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Historically our products were sold through a direct sales model, which included a combination of direct sales employees, electrical and lighting contractors, and distributors. Up until December 2019, we performed ongoing credit evaluations of our customers, but in December 2019 converted to the use of a third-party accounts receivable insurance and credit assessment company. Although we maintain allowances for potential credit losses that we believe to be adequate, a payment default on a significant sale could materially and adversely affect our operating results and financial condition, although we have mitigated this risk somewhat through the accounts receivable insurance program.</span></div><div style="text-indent:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div><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><span><br/></span></div><div style="padding-left:36pt;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 2020, two customers accounted for 62% of net sales, with sales to our primary distributor for the U.S. Navy accounting for approximately 49% and sales to a regional commercial lighting retrofit company accounting for approximately 12% of net sales. When sales to our primary distributor for the U.S. Navy are combined with sales to shipbuilders for the U.S. Navy, total net sales of products for the U.S. Navy comprised approximately 53% of net sales for the same period. In 2019, two customers accounted for 45% of net sales and total sales to distributors to the U.S. Navy represented 23% of net sales.</span></div><div style="padding-left:36pt"><span><br/></span></div><div style="padding-left:36pt;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, 2020, a distributor to the U.S. Navy accounted for 28% of our net trade accounts receivable and a shipbuilder for the U.S. Navy accounted for 21% of our net trade accounts receivable. At December 31, 2019, a distributor to the U.S. Navy accounted for 10% of our net trade accounts receivable and a large regional retrofit company accounted for 41% of our net trade accounts receivable.</span></div><div><span><br/></span></div><div><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. Substantially all of the materials we require are in adequate supply. However, 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 $0.1 million at December 31, 2020 and 2019, respectively. </span></div><div><span><br/></span></div><div><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>
CY2020Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	800000	USD
CY2019Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	100000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	20000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	50000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5981000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-7373000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3270000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2462000	shares
CY2020	us-gaap	Advertising Expense AdvertisingExpense	100000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	200000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	195000	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	258000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	33000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	78000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	19000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-91000	USD
CY2020Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	227000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	195000	USD
CY2019Q1	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	200000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-7400000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-6000000.0	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6600000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2500000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	200000	USD
CY2019Q1	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	3	position
CY2019Q2	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	9	position
CY2019Q3	us-gaap	Revenues Revenues	2900000	USD
CY2019Q4	us-gaap	Revenues Revenues	3500000	USD
CY2019Q4	efoi	Revenue Percent Change RevenuePercentChange	0.211
CY2020	us-gaap	Restructuring Costs RestructuringCosts	-60000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	11000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	38000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	11000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	24000	USD
CY2020Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	0	USD
CY2019Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	14000	USD
CY2020Q1	efoi	Proceeds From The Issuance Of Common Stock And Warrants Net Of Issuance Costs ProceedsFromTheIssuanceOfCommonStockAndWarrantsNetOfIssuanceCosts	2300000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	1714000	USD
CY2020	efoi	Adjustments To Additional Paid In Capital Warrant Reclassified AdjustmentsToAdditionalPaidInCapitalWarrantReclassified	1400000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4255000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Discount Rate LesseeOperatingLeaseDiscountRate	0.0725
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P1Y7M6D
CY2020	efoi	Restructured Leases Operating Lease Weighted Average Remaining Lease Term RestructuredLeasesOperatingLeaseWeightedAverageRemainingLeaseTerm	P0Y6M
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y3M18D
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	300000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	300000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	300000	USD
CY2019Q1	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	200000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	105000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	100000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	597000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	628000	USD
CY2020	efoi	Operating Lease Cost Net Of Sublease Income OperatingLeaseCostNetOfSubleaseIncome	492000	USD
CY2019	efoi	Operating Lease Cost Net Of Sublease Income OperatingLeaseCostNetOfSubleaseIncome	528000	USD
CY2020	efoi	Restructured Lease Sublease Income RestructuredLeaseSubleaseIncome	272000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	1000	USD
CY2019	efoi	Restructured Lease Sublease Income RestructuredLeaseSubleaseIncome	403000	USD
CY2020	efoi	Restructured Lease Operating Lease Cost RestructuredLeaseOperatingLeaseCost	237000	USD
CY2019	efoi	Restructured Lease Operating Lease Cost RestructuredLeaseOperatingLeaseCost	385000	USD
CY2020	efoi	Restructured Lease Operating Lease Cost Net Of Sublease Income RestructuredLeaseOperatingLeaseCostNetOfSubleaseIncome	-35000	USD
CY2019	efoi	Restructured Lease Operating Lease Cost Net Of Sublease Income RestructuredLeaseOperatingLeaseCostNetOfSubleaseIncome	-18000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
CY2020	us-gaap	Lease Cost LeaseCost	457000	USD
CY2019	us-gaap	Lease Cost LeaseCost	511000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	794000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1289000	USD
CY2020Q4	efoi	Restructured Operating Lease Right Of Use Asset RestructuredOperatingLeaseRightOfUseAsset	107000	USD
CY2019Q4	efoi	Restructured Operating Lease Right Of Use Asset RestructuredOperatingLeaseRightOfUseAsset	322000	USD
CY2020Q4	efoi	Operating Lease Rightof Use Asset Including Restructured Leases OperatingLeaseRightofUseAssetIncludingRestructuredLeases	901000	USD
CY2019Q4	efoi	Operating Lease Rightof Use Asset Including Restructured Leases OperatingLeaseRightofUseAssetIncludingRestructuredLeases	1611000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	916000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1480000	USD
CY2020Q4	efoi	Restructured Operating Lease Liability RestructuredOperatingLeaseLiability	168000	USD
CY2019Q4	efoi	Restructured Operating Lease Liability RestructuredOperatingLeaseLiability	488000	USD
CY2020Q4	efoi	Operating Lease Liability Including Restructured Leases OperatingLeaseLiabilityIncludingRestructuredLeases	1084000	USD
CY2019Q4	efoi	Operating Lease Liability Including Restructured Leases OperatingLeaseLiabilityIncludingRestructuredLeases	1968000	USD
CY2020Q4	efoi	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	13000	USD
CY2019Q4	efoi	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	13000	USD
CY2020Q4	efoi	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	9000	USD
CY2019Q4	efoi	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	5000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	4000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	8000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	6000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	6000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	622000	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	170000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Rolling Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextRollingTwelveMonths	136000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	3000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	329000	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due In Rolling Year Two RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	0	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Rolling Year Two LessorOperatingLeasePaymentsToBeReceivedRollingYearTwo	0	USD
CY2019Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	3518000	USD
CY2020	efoi	Increase Decrease In Inventory Reserves IncreaseDecreaseInInventoryReserves	600000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	16000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	1000	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due In Rolling Year Five RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	0	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Undiscounted Excess Amount RestructuredLeasesLesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2000	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due In Rolling Year Three RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	0	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Rolling Year Three LessorOperatingLeasePaymentsToBeReceivedRollingYearThree	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	0	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due In Rolling Year Four RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	0	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Rolling Year Four LessorOperatingLeasePaymentsToBeReceivedRollingYearFour	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	0	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Rolling Year Five LessorOperatingLeasePaymentsToBeReceivedRollingYearFive	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	968000	USD
CY2020Q4	efoi	Restructured Leases Lessee Operating Lease Liability Payments Due RestructuredLeasesLesseeOperatingLeaseLiabilityPaymentsDue	170000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	136000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	4000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	52000	USD
CY2020Q4	efoi	Lessor Operating Lease Liability Undiscounted Excess Amount LessorOperatingLeaseLiabilityUndiscountedExcessAmount	2000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	0	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	916000	USD
CY2020Q4	efoi	Restructured Operating Lease Liability RestructuredOperatingLeaseLiability	168000	USD
CY2020Q4	efoi	Operating Lease Receivable OperatingLeaseReceivable	134000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	537000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	536000	USD
CY2020	efoi	Restructured Leases Operating Lease Payments RestructuredLeasesOperatingLeasePayments	69000	USD
CY2019	efoi	Restructured Leases Operating Lease Payments RestructuredLeasesOperatingLeasePayments	87000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	2695000	USD
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	3518000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	5641000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	6168000	USD
CY2020	efoi	Inventory Valuation Reserves Sales Of Inventory InventoryValuationReservesSalesOfInventory	343000	USD
CY2019	efoi	Inventory Valuation Reserves Sales Of Inventory InventoryValuationReservesSalesOfInventory	845000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	3937000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5840000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5749000	USD
CY2020Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2894000	USD
CY2019Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	3518000	USD
CY2018Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	4085000	USD
CY2020	efoi	Inventory Valuation Reserves Provision Accrual InventoryValuationReservesProvisionAccrual	281000	USD
CY2019	efoi	Inventory Valuation Reserves Provision Accrual InventoryValuationReservesProvisionAccrual	-814000	USD
CY2020	efoi	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	0	USD
CY2019	efoi	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	536000	USD
CY2020Q4	efoi	Inventory Valuation Reserves Raw Materials InventoryValuationReservesRawMaterials	2894000	USD
CY2019	efoi	Increase Decrease In Inventory Levels Gross IncreaseDecreaseInInventoryLevelsGross	1900000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	2984000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	13000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	13000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	3084000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	2664000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	2595000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	420000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	389000	USD
CY2020	us-gaap	Depreciation Depreciation	200000	USD
CY2019	us-gaap	Depreciation Depreciation	300000	USD
CY2020Q4	us-gaap	Prepaid Insurance PrepaidInsurance	126000	USD
CY2019Q4	us-gaap	Prepaid Insurance PrepaidInsurance	140000	USD
CY2020Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	233000	USD
CY2019Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	133000	USD
CY2020Q4	us-gaap	Prepaid Rent PrepaidRent	80000	USD
CY2019Q4	us-gaap	Prepaid Rent PrepaidRent	70000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	342000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2020Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	1000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	10000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	782000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	353000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	45000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	186000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	149000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	215000	USD
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	885000	USD
CY2019Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	360000	USD
CY2020Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	95000	USD
CY2019Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	32000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	11000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	24000	USD
CY2020Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	227000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	195000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1412000	USD
CY2020Q1	efoi	Accumulated Interest On Subordinated Debt AccumulatedInterestOnSubordinatedDebt	100000	USD
CY2020Q4	efoi	Payment Protection Program Noncurrent PaymentProtectionProgramNoncurrent	266000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1012000	USD
CY2020Q3	efoi	Line Of Credit Facility Available Amount Based On Qualified Accounts LineOfCreditFacilityAvailableAmountBasedOnQualifiedAccounts	4500000	USD
CY2019Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.05
CY2019Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2000000	shares
CY2020	efoi	Percentage Of Series A Preferred Stock Eligible To Vote PercentageOfSeriesAPreferredStockEligibleToVote	0.1107
CY2020Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	275000	USD
CY2020Q4	efoi	Payment Protection Program Current PaymentProtectionProgramCurrent	529000	USD
CY2020Q4	us-gaap	Purchase Obligation PurchaseObligation	8000000.0	USD
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2019Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2000000	shares
CY2020Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020	efoi	Percentage Of Series A Preferred Stock Eligible To Vote PercentageOfSeriesAPreferredStockEligibleToVote	0.1107
CY2020Q1	efoi	Payments For Clearing Fees PaymentsForClearingFees	231000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	500000	USD
CY2020Q1	efoi	Proceeds From The Issuance Of Common Stock And Warrants Net Of Issuance Costs ProceedsFromTheIssuanceOfCommonStockAndWarrantsNetOfIssuanceCosts	2300000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	275000	USD
CY2020Q4	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	467306	shares
CY2020Q4	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	3.51
CY2020	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	1600000	USD
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercised ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised	269240	shares
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	918000	USD
CY2020	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	467306	shares
CY2020Q4	efoi	Class Of Warrant Or Right Warrants Issued ClassOfWarrantOrRightWarrantsIssued	467306	shares
CY2020	efoi	Adjustments To Additional Paid In Capital Warrant Reclassified AdjustmentsToAdditionalPaidInCapitalWarrantReclassified	1400000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P10Y
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	131000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	2.20
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	616000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	200000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	600000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y1M6D
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y7M6D
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.06
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.45
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	2.68
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M6D
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y9M18D
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.007
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.018
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.936
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	137860	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.900
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	58574	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.90
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.20
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	35499	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	12.75
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	5505	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	26.65
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	155031	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.23
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	112350	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.68
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	33774	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	9.56
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	12157	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.11
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	221450	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.45
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	177827	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	3.62
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	38465	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.88
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	12157	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	403000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	54000	USD
CY2020Q4	us-gaap	Share Price SharePrice	4.03
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	221450	shares
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P8Y9M18D
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	3.45
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	38465	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P7Y7M6D
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	7.88
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	12.70
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.10
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	11.15
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	11.65
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	13.17
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.44
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	3.96
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	12.40
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	8.64
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	10000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.207
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.005
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.056
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.260
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.024
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.001
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.001
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1787000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1505000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	14510000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	225000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	378000	USD
CY2020Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	20000	USD
CY2019Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	44000	USD
CY2020Q4	efoi	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	271000	USD
CY2019Q4	efoi	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	461000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	12758000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	16363000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	14390000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	7100000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	8300000	USD
CY2020Q4	efoi	Deferred Tax Assets Operating Loss Carryforwards Portion Available After Application Of Irc Section382 Limitations DeferredTaxAssetsOperatingLossCarryforwardsPortionAvailableAfterApplicationOfIRCSection382Limitations	61500000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	7100000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	8300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	37300000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2019	us-gaap	Revenues Revenues	12705000	USD
CY2019Q4	efoi	Longlived Assets Locatedin Us Percent LonglivedAssetsLocatedinUSPercent	1
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.35
CY2020	us-gaap	Revenues Revenues	16828000	USD
CY2019	us-gaap	Revenues Revenues	12705000	USD
CY2020	us-gaap	Revenues Revenues	16828000	USD
CY2020Q4	efoi	Longlived Assets Locatedin Us Percent LonglivedAssetsLocatedinUSPercent	1
CY2020Q4	us-gaap	Revenues Revenues	3746000	USD
CY2020Q3	us-gaap	Revenues Revenues	5964000	USD
CY2020Q2	us-gaap	Revenues Revenues	3335000	USD
CY2020Q1	us-gaap	Revenues Revenues	3783000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	1434000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	1376000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	1343000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	1032000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	65000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-1165000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-4340000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-541000	USD
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.36
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3308000	shares
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3192000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3086000	shares
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.35
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.36
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.18
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3491000	shares
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4307000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3308000	shares
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3192000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3086000	shares
CY2019Q4	us-gaap	Revenues Revenues	3531000	USD
CY2019Q3	us-gaap	Revenues Revenues	2915000	USD
CY2019Q2	us-gaap	Revenues Revenues	3082000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	-109000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.38
CY2019Q1	us-gaap	Revenues Revenues	3177000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	957000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	1028000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	98000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-1308000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-946000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-2254000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-2865000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.53
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.91
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.18
CY2019Q4	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	2480000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	2474000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	2467000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	2425000	shares

Files In Submission

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$EFOI
ENERGY FOCUS, INC/DE Stock $efoi

2020 Q4 Form 10-K Financial Statement

#000092416821000014 Filed on March 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFOI ENERGY FOCUS, INC/DE Stock $efoi

2020 Q4 Form 10-K Financial Statement

#000092416821000014 Filed on March 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFOI
ENERGY FOCUS, INC/DE Stock $efoi