Stock Option Plan - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Number of Options
Outstanding, beginning balance (in shares)	986,819
Granted (in shares)	55,500
Exercised (in shares)	(85,124)
Forfeited (in shares)	(9,623)
Expired (in shares)	(458,276)
Outstanding, ending balance (in shares)	489,296	986,819
Vested and expected to vest (in shares)	489,296
Options exercisable (in Shares)	468,706
Weighted- Average Exercise Price Per Share
Outstanding, beginning balance (in dollars per share)	$ 11.87
Granted (in dollars per share)	1.99
Exercised (in dollars per share)	0.26
Forfeited (in dollars per share)	16.70
Expired (in dollars per share)	16.46
Outstanding, ending balance (in dollars per share)	8.39	$ 11.87
Vested and expected to vest (in dollars per share)	8.39
Options exercisable (in dollars per share)	$ 8.65
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, Weighted Average Remaining Contractual Term	6 years 6 months 10 days	6 years 5 months 8 days
Vested and expected to vest, Weighted Average Remaining Contractual Term	6 years 6 months 10 days
Options exercisable, Weighted Average Remaining Contractual Term	6 years 5 months 1 day
Outstanding, Aggregate Intrinsic Value	$ 370	$ 228
Vested and expected to vest, Aggregate Intrinsic Value	370
Options exercisable, Aggregate Intrinsic Value	$ 332

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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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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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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 exercisable or convertible options. 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 exercisable options that may 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 price at which option holders acquired shares when converting their stock options into shares.

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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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