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Schedule of Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other Income and Expenses [Abstract]
Reimbursed SPA costs		$ 98
Other, net	23	(19)
Other income, net	$ 23	$ 79

X

- Definition

Other non-operating income, net.

+ References

No definition available.

+ Details

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Namespace Prefix:	BFRI_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Reimbursed Costs.

+ References

No definition available.

+ Details

Name:	BFRI_ReimbursedCosts
Namespace Prefix:	BFRI_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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Period Type:	duration