Income Taxes (Details 1) - EUR (€)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Loss before provision	€ 4,730,000	€ 4,133,000
United States
Loss before provision	3,249,000	3,147,000
Switzerland
Loss before provision	438,000	(28,000)
The Netherlands
Loss before provision	€ 1,043,000	€ 1,014,000

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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