Fortress Biotech, Inc. Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income taxes
Effective income tax rate			0.00%
Minimum ownership interest in subsidiaries for consolidated income tax return			80.00%
Income tax expense	$ 141	$ 0	$ 142	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.