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Employee Benefit Plans	6 Months Ended
	Jun. 30, 2025
Employee Benefit Plans
Employee Benefit Plans	16. Employee Benefit Plans. For all Dutch employees, the Company participates in defined contribution pension plans with an independent insurance company. Defined contributions are expensed in the year in which the related employee services are rendered. The Company makes contributions on behalf of all Dutch employees of which $45,000 and $77,000 were made and expensed for the six months ended June 30, 2025 and calendar year 2024, respectively. Eligible employees in the United States are able to participate in a 401(k) defined contribution plan. The Company incurred $25,000 and $36,000 in 401(k) expense for the six months ended June 30, 2025 and calendar year 2024.

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- Definition

The entire disclosure for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715-70/tableOfContent

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