Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Abstract]
Warranty period	1 year
Total revenue	$ 2,436	$ 3,058	$ 1,082
Domestic
Disaggregation of Revenue [Abstract]
Total revenue	699	1,235	788
International
Disaggregation of Revenue [Abstract]
Total revenue	$ 1,737	$ 1,823	$ 294

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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+ Details