Debt facility, duration of Interest only payment.

No definition available.

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- Definition

Debt facility, duration of principal and accrued interest payment

+ References

No definition available.

+ Details

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Namespace Prefix:	fbio_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt facility, duration of principal and accrued interest payment extension.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The number of required periodic payments of debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	fbio_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of milestone payments payable.

+ References

No definition available.

+ Details

Name:	fbio_MilestonePaymentsPayable
Namespace Prefix:	fbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of milestone payments receivable.

+ References

No definition available.

+ Details

Name:	fbio_MilestonePaymentsReceivable
Namespace Prefix:	fbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of milestone payments receivable net of milestone payments payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	fbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Payment of Upfront Fees

+ References

No definition available.

+ Details

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Namespace Prefix:	fbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

+ Details

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

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Narrative) (Details) $ / shares in Units, $ in Millions				1 Months Ended
	Mar. 08, 2022 USD ($) M $ / shares shares	Jan. 13, 2022 USD ($)	Jan. 12, 2022 USD ($)	Mar. 31, 2021	Feb. 11, 2022 USD ($)	Jan. 11, 2022 USD ($)
Journey [Member]
Subsequent Event [Line Items]
Line of Credit facility expiration period				36 months
Subsequent Events [Member] \| Mustang [Member]
Subsequent Event [Line Items]
Remaining borrowing capacity	$ 45.0
Long-term Line of Credit	$ 30.0
Periodic payments of debt instrument \| M	60
Additional shares \| shares	748,036
Exercise price of warrants \| $ / shares	$ 0.8021
Subsequent Events [Member] \| Mustang [Member] \| Credit Facility [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 75.0
Debt facility, duration of Interest only payment	24 months
Debt facility, duration of principal and accrued interest payment	36 months
Debt facility, duration of principal and accrued interest payment extension	36 months
Subsequent Events [Member] \| Journey [Member] \| Credit Facility [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 10.0			$ 7.5
Credit facility expiration date			Jan. 12, 2026
Subsequent Events [Member] \| Journey [Member] \| Credit Facility [Member] \| Prime Rate [Member]
Subsequent Event [Line Items]
Basis spread on variable rate			0.70%
Subsequent Events [Member] \| Journey [Member] \| Term Loan Credit Facility [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 20.0
Subsequent Events [Member] \| Journey [Member] \| Term Loan - First Tranche [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			15.0
Long-term Line of Credit			$ 15.0
Subsequent Events [Member] \| Journey [Member] \| Term Loan - First Tranche [Member] \| Prime Rate [Member]
Subsequent Event [Line Items]
Basis spread on variable rate			1.73%
Subsequent Events [Member] \| Journey [Member] \| Term Loan - Second Tranche [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 5.0
Subsequent Events [Member] \| Demira Inc \| Journey [Member]
Subsequent Event [Line Items]
Milestone payments payable					$ 7.5
Subsequent Events [Member] \| VYNE Therapeutics [Member] \| Journey [Member]
Subsequent Event [Line Items]
Payment of Upfront Fees		$ 20.0
Milestone payments payable		$ 5.0
Subsequent Events [Member] \| Maruho Co., Ltd [Member] \| Journey [Member]
Subsequent Event [Line Items]
Milestone payments receivable net					2.5
Milestone payments receivable					$ 10.0