Debt Financing (Details Narrative) $ in Thousands						1 Months Ended						3 Months Ended	9 Months Ended
	Aug. 15, 2022 EUR (€)	Aug. 15, 2021 EUR (€)	Dec. 15, 2020 EUR (€)	Jun. 01, 2018 EUR (€)	Mar. 01, 2017 EUR (€)	May 30, 2023 EUR (€)	Feb. 28, 2023 EUR (€)	Dec. 31, 2022 EUR (€)	Jun. 15, 2020 EUR (€)	Dec. 20, 2019 EUR (€)	Jun. 15, 2019 EUR (€)	Sep. 30, 2023 EUR (€)	Sep. 30, 2023 EUR (€)	Oct. 15, 2023 EUR (€)	Apr. 30, 2022 EUR (€)	Apr. 30, 2022 USD ($)	Apr. 02, 2020 EUR (€)
Description of conversion price													(i) reducing by 10% the price per share of the Company’s common stock paid by the investors in connection with an investment in the Company of not less than US$20,000, or (ii) at the fixed conversion price using a fixed exchange rate which are noted in the table above
Promissory Notes	€ 600,000	€ 1,200,000	€ 850,000			€ 600,000	€ 500,000	€ 250,000	€ 1,100,000	€ 600,000	€ 600,000			€ 600,000	€ 960,000
Interest amount paid												€ 500.0	€ 1,000
Interest rate	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	1.50%	1.50%		2.50%	2.50%
Debt instruments description	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) December 31, 2022, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €960 and €240, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) December 31, 2021, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €680 and €170, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) March 31, 2021, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The first tranche of the promissory Notes of €640 and €160, respectively, were provided immediately. The second tranche of the promissory notes of €640 and €160, respectively, were provided on November 10, 2018, with a 2.5% interest per annum	The first 50% of the promissory Notes of €920 and €230, respectively, were provided immediately. The second 50% of the promissory notes of €920 and €230, respectively, were provided on October 18, 2017, with a 2.5% interest per annum and a maturity date of October 18, 2018	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) September 30, 2023, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €400 and €100, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) June 30, 2023, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €200 and €50, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) March 31, 2023, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €880 and €220, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) September 30, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) June 30, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) December 31, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes
Total loans and notes												€ 74,966,000	€ 74,966,000
Received from federal credit line																	€ 168,000
Amortization installment description													A first amortization installment of Chf 14 (€14) was paid on October 3, 2022. A second amortization installment of Chf 14 (€14) was paid on April 3, 2023. The next amortization of €14 was incurred on September 30, 2023, but is paid on October 2, 2023. The entire loan should be fully amortized and repaid by September 30, 2027
Debt instrument one
Debt instrument face value												190,000	€ 190,000
Debt instrument two
Debt instrument face value												1,200,000	1,200,000
Debt instrument three
Debt instrument face value												€ 300,000	€ 300,000
Promissory Notes One
Promissory Notes					€ 1,840,000									480,000		$ 240
Promissory Notes Two
Promissory Notes					€ 460,000									€ 120,000
Promissory Notes Tranches One | Round Enterprises Ltd
Promissory Notes Tranches				€ 1,280,000												480
Promissory Notes Tranches One | Eardley Holding
Promissory Notes Tranches | $																120
Promissory Notes Tranches Two | Round Enterprises Ltd
Promissory Notes Tranches				€ 320,000												480
Promissory Notes Tranches Two | Eardley Holding
Promissory Notes Tranches | $																$ 120