Equity, Restricted Stock and Restricted Stock Units (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Restricted Stock [Abstract]
Stock issued for services		$ 144,405
Unrecognized restricted common stock expense	$ 0	$ 27,292
Restricted Stock Units [Member]
Restricted Stock [Abstract]
Stock issued for services (in shares)		1,008
Stock issued for services		$ 36,000
Unvested restricted shares forfeited (in shares)		400
Unrecognized restricted common stock expense	$ 393,000	$ 393,000

No definition available.

Name:	fwbi_RestrictedStockAbstract
Namespace Prefix:	fwbi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of share-based compensation granted to employees and directors as payment for services rendered or acknowledged claims.

+ References

No definition available.

+ Details

Name:	fwbi_RestrictedStockGrantedToEmployeesdirectors
Namespace Prefix:	fwbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: