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Segment Information (Details Narrative)	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Non-US [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of revenue	78.00%	59.00%

X

- Definition

Percentage of revenue.

+ References

No definition available.

+ Details

Name:	REFR_PercentageOfRevenue
Namespace Prefix:	REFR_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_StatementGeographicalAxis=us-gaap_NonUsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: