Fortress Biotech, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Stockholders' Equity (LTIP) (Details)

Stockholders' Equity (LTIP) (Details) - USD ($)	3 Months Ended		12 Months Ended
Stockholders' Equity (LTIP) (Details) - USD ($)	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Stockholders' Equity
Stock-based compensation expense	$ 1,756,000	$ 6,289,000
LTIP
Stockholders' Equity
LTIP, Percentage of outstanding shares	1.00%
Fair value of stock granted	$ 1,500,000		$ 900,000
Stock-based compensation expense	$ 12,000	$ 2,500,000
LTIP \| Chief Executive Officer (Dr. Rosenwald)
Stockholders' Equity
Number of shares, Granted	475,424	454,163
LTIP \| Executive Vice President (Mr. Weiss)
Stockholders' Equity
Number of shares, Granted	475,424	454,163

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details