Schedule of prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Prepaid Expenses And Other Current Assets
Research and development tax credit receivable			$ 2,933
Prepayments and VAT receivable	$ 70	237	792
Other current assets	194	300	341
Prepaid expenses and other assets	$ 264	$ 537	$ 4,066

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Name:	us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant