Research and Development Agreement	12 Months Ended
Dec. 31, 2024
Research and Development [Abstract]
Research and Development Agreement	(9) Research and Development Agreement In December 2018, the Company entered into an agreement with the Belgium Walloon Region Government ("Walloon Region") in which the Walloon Region agreed to provide a grant of €1.3 million and a repayable advance of €8.3 million for the development of one of the Company’s research programs. During 2020, the Company discontinued research efforts related to this program. Other current liabilities of $2.3 million as of both December 31, 2024 and December 31, 2023, represent the remaining amount of the advance received. In 2022, the Company received notice that the Walloon Region had obtained a default judgment seeking repayment of approximately $2.3 million of the advance based upon the Company allegedly not providing required notification that research and operations in the region were discontinued.

The entire disclosure for collaborative arrangements in which the entity is a participant, including a) information about the nature and purpose of such arrangements; b) its rights and obligations thereunder; c) the accounting policy for collaborative arrangements; and d) the income statement classification and amounts attributable to transactions arising from the collaborative arrangement between participants.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 10
-Topic 808
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-SubTopic 10
-Topic 808
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 808
-Publisher FASB
-URI https://asc.fasb.org/808/tableOfContent

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