XML 55 R46.htm IDEA: XBRL DOCUMENT
v3.22.1

Debt - PPP Loan (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Apr. 17, 2020 | Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |  |
Gain on forgiveness of PPP loan |  | $ 0 | $ 801
Paycheck Protection Program |  |  |
Debt Instrument [Line Items] |  |  |
Proceeds from loan origination | $ 795 |  |
Interest rate | 1.00% |  |
Gain on forgiveness of PPP loan |  |  | $ 801

X
- Definition Gain (Loss) On Forgiveness Of Debt + References No definition available. + Details
Name: | efoi_GainLossOnForgivenessOfDebt
Namespace Prefix: | efoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash inflow associated with loan origination (the process when securing a mortgage for a piece of real property) or lease origination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromLoanOriginations1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=efoi_PaycheckProtectionProgramCARESActMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |