XML 67 R57.htm IDEA: XBRL DOCUMENT
v3.23.1

Inventories - Reserve Rollforward (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Inventory, Reserve [Roll Forward] |  |
Beginning balance | $ (3,050) | $ (2,894)
Accrual | (312) | (281)
Reduction due to sold inventory | 323 | 125
Write-off for disposed inventory | 512 | 0
Reserves for excess, obsolete, and slow-moving inventories | $ (2,527) | $ (3,050)

X
- Definition Inventory, Reserve + References No definition available. + Details
Name: | efoi_InventoryReserveRollForward
Namespace Prefix: | efoi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Inventory Valuation Reserves, Provision (Accrual) + References No definition available. + Details
Name: | efoi_InventoryValuationReservesProvisionAccrual
Namespace Prefix: | efoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inventory Valuation Reserves, Raw Materials + References No definition available. + Details
Name: | efoi_InventoryValuationReservesRawMaterials
Namespace Prefix: | efoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Inventory Valuation Reserves, Sales Of Inventory + References No definition available. + Details
Name: | efoi_InventoryValuationReservesSalesOfInventory
Namespace Prefix: | efoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inventory Valuation Reserves, Write-Offs + References No definition available. + Details
Name: | efoi_InventoryValuationReservesWriteOffs
Namespace Prefix: | efoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration