Aggregate offering price of securities.

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The number of votes that each common stock receives.

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- Definition

The percentage of gross proceeds on sales of stock that makes up the commission.

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Represents the voting power of the issued and outstanding shares entitled to vote.

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No definition available.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

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- Definition

Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The cash inflow from the additional capital contribution to the entity.

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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

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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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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No definition available.

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Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2025 USD ($) shares	Mar. 31, 2024 $ / shares shares	Dec. 31, 2024 USD ($) Vote $ / shares shares	Dec. 31, 2023 USD ($) Vote $ / shares shares	Dec. 31, 2022 Vote shares	Dec. 19, 2024 shares	Dec. 18, 2024 shares	Nov. 13, 2024	Jun. 07, 2024 shares	Jun. 06, 2024 shares	Mar. 01, 2022 USD ($)
Sale Of Stock [Line Items]
Common stock, shares authorized		58,251,629		58,251,629	58,251,629
Common stock, shares issued		19,203,330		19,197,914	19,134,164
Common stock, shares outstanding (in shares)		19,203,330		19,197,914	19,134,164
Share Price \| $ / shares			$ 0.62	$ 0.62	$ 0.52
Underwriting discounts, commission and offering expenses \| $		$ 1,606		$ 1,303
Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Common stock, shares authorized		16,666,667		16,666,667	8,333,333		16,666,667	200,000,000		200,000,000	100,000,000
Common stock, shares issued		1,524,535		1,523,743	1,513,353
Common stock, shares outstanding (in shares)		1,524,535		1,523,743	1,513,353
Preferred stock, shares issued		0		0	0
Preferred stock, shares outstanding		0		0	0
Quorum requirement reduction to vote									0.33
Number of votes for each share of common stock \| Vote				1	1	1
Net proceeds from sales of common stock under open market sales agreement \| $					$ 1,117
Unsold Securities Under Shelf Registration Statement dated April 4, 2019 [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Aggregate offering price of securities \| $												$ 154,500
Open Market Sales Agreement [Member] \| Jeffries LLC [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Common stock, shares issued				0	10,747
Stock Sale Commission Percentage	3.00%
Net proceeds from sales of common stock under open market sales agreement \| $					$ 1,117,000
Open Market Sales Agreement [Member] \| Jeffries LLC [Member] \| Maximum [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Aggregate offering price of securities \| $	$ 80,000
2022 Shelf Registration Statement [Member] \| Maximum [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Aggregate offering price of securities \| $												$ 300,000
Common Stock [Member]
Sale Of Stock [Line Items]
Common stock, shares issued		19,203,330	19,197,914	19,197,914	19,134,164	19,127,914
Time-based Restricted Stock Units [Member] \| Common Stock [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Restricted stock units, vested		792	1,274	6,487	5,646	5,337
Performance-Based Restricted Stock Units \| Common Stock [Member] \| Cara Therapeutics, Inc.
Sale Of Stock [Line Items]
Restricted stock units, vested		0	3,903	3,903	0	2,114