Revenue Recognition - Summary of Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 3,086	$ 3,327	$ 6,138	$ 5,527
Revenue recognized at a point in time [Member]
Disaggregation of Revenue [Line Items]
Revenue	523	336	523	336
Revenue recognized over time
Disaggregation of Revenue [Line Items]
Revenue	2,563	2,991	5,615	5,191
Collaborative research, other professional services and related materials
Disaggregation of Revenue [Line Items]
Revenue	3,081	2,484	5,918	4,294
Access to quantum computing systems
Disaggregation of Revenue [Line Items]
Revenue	$ 5	$ 843	$ 220	$ 1,233

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.

Amount, including 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.

+ References

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details