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Revenue - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Jan. 01, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 3,345,000	$ 1,632,000	$ 5,681,000	$ 2,311,000
Accounts receivable, net	1,738,000		1,738,000		$ 1,265,000	$ 700,000
Contract asset	0		0		0
Contract liability	3,200,000		3,200,000		$ 3,400,000	$ 3,400,000
Revenue recognized	500,000	400,000	1,000,000.0	500,000
Customization design services
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Bill-and-hold
Disaggregation of Revenue [Line Items]
Revenue	$ 600,000	300,000	$ 700,000	300,000
Bill-and-hold | Government grant
Disaggregation of Revenue [Line Items]
Revenue		$ 53,000.0		$ 300,000

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