XML 112 R86.htm IDEA: XBRL DOCUMENT
v3.25.4

Stock-based Compensation - Schedule of Forfeiture Rate (Details) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |  |  |
Weighted average forfeiture rate | 6.40% | 6.30% | 6.40%

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Forfeiture Rate + References No definition available. + Details
Name: | erii_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureRate
Namespace Prefix: | erii_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration