Stockholders' Deficit (Shares Reserved for Future Issuance) (Details) - shares	Sep. 30, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options outstanding	5,012,648	3,755,965
Shares issuable under the Employee stock purchase plan	11,890
Shares available for future grants under the 2016 Plan	2,169,950
Warrants outstanding	10,655,047
Shares issuable upon the conversion of the Convertible Loan	24,096,491
Total shares reserved	42,098,526
Restricted stock unit
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested restricted stock units	152,500
Equity Incentive Plan 2016
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for future grants under the 2016 Plan	2,169,950

Number of shares issuable upon conversion of convertible debt.

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Number of warrants or rights outstanding.

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Aggregate number of common shares reserved for future issuance.

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The shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service.

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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.

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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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