Commitments and Contingencies - Commitments (Details)										1 Months Ended		3 Months Ended		9 Months Ended
	Jan. 25, 2022 USD ($)	Jan. 25, 2022 EUR (€)	Dec. 24, 2021 USD ($)	Dec. 22, 2021 USD ($) item	Dec. 22, 2021 EUR (€) item	Oct. 07, 2021 USD ($)	Oct. 07, 2021 EUR (€)	Apr. 06, 2021 USD ($) ft²	Aug. 31, 2020 USD ($) ft²	May 31, 2022 USD ($) item	May 31, 2022 EUR (€) item	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Jan. 26, 2022
Commitments and Contingencies
Lease expense under non-cancelable operating lease	$ 4,200	€ 4,000	$ 21,000
Cash paid for operating lease liabilities recognized under operating cash flows														$ 384,000	$ 0
Total deposit paid	9,500	9,000
General and administrative expense
Commitments and Contingencies
Lease expense under non-cancelable operating lease												$ 0		60,000
Lease cost												45,000	$ 103,000	341,000	$ 123,000
If contracts are terminated within 12 months
Commitments and Contingencies
Lease expense under non-cancelable operating lease	$ 4,000	€ 3,817
Office space sub lease
Commitments and Contingencies
Area (in square feet) | ft²								10,526	5,263
Sub lease rent									$ 15,000
Remaining commitment												$ 0		$ 0
Extension period								3 years
Lease term								3 years
Monthly base rent for first twelve months								$ 42,000
Monthly base rent for subsequent twelve months								43,000
Monthly base rent for final 12 months								$ 45,000
Copernico Centrale agreement | Leased office premises
Commitments and Contingencies
Lease expense under non-cancelable operating lease						$ 10,500	€ 10,000
Extension period						20 months	20 months									20 months
Total deposit paid						$ 21,000	€ 20,000
Arval Service Lease Italia Spa agreement | Leased vehicle
Commitments and Contingencies
Lease expense under non-cancelable operating lease				$ 2,100	€ 2,000
Lease term				48 months	48 months
Number of vehicles on lease | item				2	2
Total deposit paid				$ 20,000	€ 19,000
ALD Automative Italia S.r.l | Leased vehicle
Commitments and Contingencies
Lease expense under non-cancelable operating lease										$ 880	€ 833
Lease term										48 months	48 months
Number of vehicles on lease | item										1	1
Total deposit paid										$ 22,000	€ 21,000