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License and Other Agreements (Details Narrative)	12 Months Ended
	Dec. 31, 2020
Minimum [Member]
Royalty earned percentage	5.00%
Maximum [Member]
Royalty earned percentage	15.00%

X

- Definition

Royalty earned percentage.

+ References

No definition available.

+ Details

Name:	REFR_RoyaltyEarnedPercentage
Namespace Prefix:	REFR_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: