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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Apr. 09, 2025	Mar. 31, 2025	Mar. 31, 2024	Apr. 30, 2025	Dec. 31, 2024	Mar. 04, 2024
Subsequent Event [Line Items]
Common stock, par value (in usd per share)		$ 0.0001			$ 0.0001	$ 0.0001
Proceeds from issuance of common stock		$ 0	$ 191
Subsequent Event
Subsequent Event [Line Items]
Changes in the expanded disability status scale (as a percent)				20.00%
Reduction in the risk of event in primary progressive multiple sclerosis (as a percent)				30.00%
Reduction in the risk of event in secondary progressive multiple sclerosis (as a percent)				15.00%
Reduction in the risk of events in patients without gadolinium-enhancing lesions at baseline (as a percent)				29.00%
Improvement in brain volume change (as a percent)				5.00%
Reduction in annualized rate of thalamic brain volume loss (as a percent)				20.00%
Difference in mean percent between the vidofludimus calcium and placebo (as a percent)				3.19%
Mean percent change for vidofludimus calcium (as a percent)				(0.22%)
Mean percent change for placebo (as a percent)				2.97%
Subsequent Event | Securities Purchase Agreement
Subsequent Event [Line Items]
Shares issues in private placement transaction (in shares)	5,666,667
Common stock, par value (in usd per share)	$ 0.0001
Sale of stock, price per share (in usd per share)	$ 0.90
Proceeds from issuance of common stock	$ 5,100
Subsequent Event | Placement Agency Agreement
Subsequent Event [Line Items]
Placement agent agreement, cash fee, percent of gross proceeds from offering (as a percent)	6.00%
Warrants purchased (in shares)	283,334
Shares sold in the Offering (as a percent)	5.00%
Initial exercise price per share of common stock (in usd per share)	$ 1.125
Initial exercise price per share (as a percent)	125.00%
Subsequent Event | Offering
Subsequent Event [Line Items]
Proceeds from issuance, net of offering expenses	$ 4,600

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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-Topic 210
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

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-Topic 855
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Reduction In the Risk Of Event In Patients Without Gadolinium-Enhancing Lesions At Baseline

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