Foreign Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geographic area	$ 1,031	$ 0	$ 1,251	$ 0
Operating (loss) income by geographic area	(13,927)	(4,041)	(22,804)	(5,324)
Net (loss) income by geographic area	(14,710)	(4,629)	(17,312)	(6,194)
Identifiable assets by geographic area	34,041		34,041		$ 509
Long lived assets by geographic area	5,646		5,646		278
Goodwill by geographic area	12,330		12,330		0
Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geographic area	(139)	0	(139)	0
Operating (loss) income by geographic area	0	0	0	0
Net (loss) income by geographic area	0	0	0	0
Identifiable assets by geographic area	(33,851)		(33,851)		0
Long lived assets by geographic area	0		0		0
Goodwill by geographic area	0		0		0
United States | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geographic area	296	0	323	0
Operating (loss) income by geographic area	(13,039)	(4,041)	(21,979)	(5,324)
Net (loss) income by geographic area	(13,823)	(4,629)	(16,497)	(6,194)
Identifiable assets by geographic area	45,427		45,427		509
Long lived assets by geographic area	2,141		2,141		278
Goodwill by geographic area	3,142		3,142		0
Germany | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geographic area	874	0	1,067	0
Operating (loss) income by geographic area	(888)	0	(825)	0
Net (loss) income by geographic area	(887)	0	(815)	0
Identifiable assets by geographic area	22,455		22,455		0
Long lived assets by geographic area	3,505		3,505		0
Goodwill by geographic area	9,188		9,188		0
United Kingdom | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geographic area	0	0	0	0
Operating (loss) income by geographic area	0	0	0	0
Net (loss) income by geographic area	0	$ 0	0	$ 0
Identifiable assets by geographic area	10		10		0
Long lived assets by geographic area	0		0		0
Goodwill by geographic area	$ 0		$ 0		$ 0