v3.25.4

Accounts Payable, Accrued Expenses and Dividends Payable on Series C Preferred Stock - Additional Information (Details) - USD ($)			12 Months Ended
	Dec. 31, 2025	Dec. 20, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2021
Series C Preferred Stock
Accounts Payable and Accrued Expenses
Annual increase in percentage of the liquidation preference per share, if dividend not paid in cash (in percent)	5.00%		5.00%
Amount of liquidation preference			$ 2,124,000
Liquidation preference price (in dollars per share)			$ 53.1
Cumulative liquidation value of series c preferred stock	$ 44,607,452		$ 44,607,452	$ 42,483,000
Cash dividend (in percent)		3.00%
Aggregated dividend amount		$ 1,275,000
DRI Capital
Accounts Payable and Accrued Expenses
Royalty interest (as percentage)					25.00%
Merck
Accounts Payable and Accrued Expenses
Due to related parties					$ 331,000
Other Liability, Related Party, Type [Extensible Enumeration]					us-gaap:RelatedPartyMember
Accrued royalties	$ 331,000		$ 331,000	$ 331,000

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The annual increase in percentage of the liquidation preference per share, if dividend not paid in cash.

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The per share increase in liquidation preference.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Amount of liabilities classified as other.

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The percentage rate used to calculate dividend payments on preferred stock.

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Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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ENZON PHARMACEUTICALS, INC. 10-K