Fortress Biotech, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Related Party Transactions - Additional Information (Detail)

v2.4.1.9

Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended		1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Oct. 31, 2014
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director	12.40%	14.10%
Costs and Expenses, Related Party	$ 141,000us-gaap_CostsAndExpensesRelatedParty	$ 0us-gaap_CostsAndExpensesRelatedParty
Opus Point Partners Management, LLC [Member] \| Desk Share Agreement [Member]
Related Party Transaction [Line Items]
Operating Leases, Area of Land, Percentage			20.00%
Payments for Rent			200,000
Accrued Rent	100,000
Lessee Leasing Arrangements, Operating Leases, Term of Contract			5 years
TG Therapeutics, Inc [Member] \| Desk Share Agreement [Member]
Related Party Transaction [Line Items]
Operating Leases, Area of Land, Percentage			40.00%
Payments for Rent			200,000
Accrued Rent	$ 100,000
Lessee Leasing Arrangements, Operating Leases, Term of Contract			5 years
Executive Vice Chairman [Member]
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director	14.90%

- Definition

Operating Leases, Area of Land, Percentage

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- Definition

Related party other investment percentage in entity by principal stockholder or director.

+ References

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph a

-Article 7

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 5

-Article 9

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Cash payments to lessor's for use of assets under operating leases.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

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