v3.25.2

Stockholders' Equity (Restricted Stock or Restricted Units Awards) (Details)	6 Months Ended
	Jun. 30, 2025 USD ($) $ / shares shares
Restricted stock award
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance \| shares	1,195
Vested \| shares	(475)
Nonvested, Number, Ending Balance \| shares	720
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance \| $ / shares	$ 415.95
Vested \| $ / shares	523.5
Nonvested, Ending Balance \| $ / shares	$ 345
Unrecognized share-based compensation \| $	$ 100,000
Weighted average vesting period (in years)	1 year
Restricted stock units
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance \| shares	226
Forfeited \| shares	(12)
Vested \| shares	(102)
Nonvested, Number, Ending Balance \| shares	112
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance \| $ / shares	$ 746.7
Forfeited \| $ / shares	1,321.25
Vested \| $ / shares	972.25
Nonvested, Ending Balance \| $ / shares	$ 479.73
Unrecognized share-based compensation \| $	$ 9,000
Weighted average vesting period (in years)	1 year 3 months 18 days

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

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

+ References

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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-Topic 718
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-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

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

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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MUSTANG BIO, INC. 10-Q