Stock Option Plan - Schedule of stock option activity (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
2010 Plan
Shares
Beginning balance (in shares)	12
Granted, (in shares)	0
Exercised (in shares)	0
Forfeited (in shares)	0
Expired/Cancelled (in shares)	(1)
Ending balance (in shares)	11	12
Options exercisable (in shares)	11
Options vested (in shares)	11
Weighted- Average Exercise Price per Share($)
Beginning balance (in dollars per share)	$ 1,250,911.84
Granted (in dollars per share)	0
Exercised (in dollars per share)	0
Forfeited (in dollars per share)	0
Expired/Cancelled (in dollars per share)	1,199,983.1
Ending balance (in dollars per share)	1,257,054	$ 1,250,911.84
Options exercisable (in dollars per share)	1,257,054
Options vested (in dollars per share)	$ 1,257,054
Weighted- Average Remaining Contractual Term (Years)
Outstanding, weighted-average remaining contractual term	2 years 11 months 26 days	2 years 10 months 24 days
Options exercisable, weighted average remaining contractual term	2 years 11 months 26 days
Options vested, weighted average remaining contractual term	2 years 11 months 26 days
Aggregate Intrinsic Value($)
Outstanding	$ 0	$ 0
Exercisable	0
Vested	$ 0
2020 Plan
Shares
Beginning balance (in shares)	10,467
Granted, (in shares)	0
Exercised (in shares)	0
Forfeited (in shares)	0
Expired/Cancelled (in shares)	(1)
Ending balance (in shares)	10,467	10,467
Options exercisable (in shares)	10,467
Options vested (in shares)	10,467
Weighted- Average Exercise Price per Share($)
Beginning balance (in dollars per share)	$ 3,262.29
Granted (in dollars per share)	0
Exercised (in dollars per share)	0
Forfeited (in dollars per share)	0
Expired/Cancelled (in dollars per share)	2,376,000
Ending balance (in dollars per share)	3,136.34	$ 3,262.29
Options exercisable (in dollars per share)	3,127.63
Options vested (in dollars per share)	$ 3,136.34
Weighted- Average Remaining Contractual Term (Years)
Outstanding, weighted-average remaining contractual term	9 years 7 months 20 days	9 years 10 months 17 days
Options exercisable, weighted average remaining contractual term	9 years 7 months 20 days
Options vested, weighted average remaining contractual term	9 years 7 months 20 days
Aggregate Intrinsic Value($)
Outstanding	$ 0	$ 0
Exercisable	0
Vested	$ 0

Share Based Compensation Arrangement by Share Based Payment Award, Options, Intrinsic Value

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Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Remaining Contractual Term

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of share options (or share units) exercised during the current period.

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