Revenue and Accounts Receivable - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,985	$ 1,982	$ 14,723	$ 2,989
China
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,941	$ 6	$ 11,941	$ 966
China \| Geographic concentration risk \| Revenue benchmark
Disaggregation of Revenue [Line Items]
Concentration (as a percent)	99.60%	0.30%	81.10%	32.30%
United States
Disaggregation of Revenue [Line Items]
Total revenue	$ 28	$ 1,974	$ 2,625	$ 1,974
United States \| Geographic concentration risk \| Revenue benchmark
Disaggregation of Revenue [Line Items]
Concentration (as a percent)	0.20%	99.60%	17.80%	66.00%
Other
Disaggregation of Revenue [Line Items]
Total revenue	$ 16	$ 2	$ 157	$ 49
Other \| Geographic concentration risk \| Revenue benchmark
Disaggregation of Revenue [Line Items]
Concentration (as a percent)	0.10%	0.10%	1.10%	1.60%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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