Employee Benefit Plans	6 Months Ended
Jun. 30, 2024
Employee Benefit Plans
Employee Benefit Plans	13. 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 $22,000 and $30,000 were made and expensed for the three and six months ended June 30, 2024, respectively.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 710
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/710/tableOfContent

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 712
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/712/tableOfContent

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715/tableOfContent

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/718/tableOfContent

Name:	us-gaap_CompensationAndEmployeeBenefitPlansTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration