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Market value of the company's common stock.

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Number Of customers over ten percent benchmark.

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Number of financial institutions.

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Significant accounting policies

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The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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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.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of capitalized costs incurred in the period to renew or extend the term of a recognized finite-lived (amortizing and amortizable) intangible asset.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Description of when remaining performance obligation is expected to be recognized as revenue.

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Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) FinancialInstitution Customers	Jun. 30, 2022 USD ($) Customers	Jun. 30, 2023 USD ($) FinancialInstitution Customers	Jun. 30, 2022 USD ($) Customers	Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 0		$ 0		$ 0
Impairment of Long-Lived Assets to be Disposed of	0	$ 0	0	$ 0
Accrued interest receivable on available-for-sale investments	1,900		1,900		1,700
Capitalized materials and supplies	1,400		2,200
Letters of credit outstanding amount	$ 2,100		$ 2,100		2,000
Number of financial institutions \| FinancialInstitution	3		3
Capitalized Commissions [Member]
Significant Accounting Policies [Line Items]
Capitalized contract cost	$ 1,300		$ 1,300		$ 1,000
Capitalized contract cost amortization expense	200	$ 0	$ 300	$ 0
Quantum Computer Systems [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life			2 years
ASC 606 [Member]
Significant Accounting Policies [Line Items]
Revenue, remaining performance obligation, amount	$ 49,100		$ 49,100
Percentage Of Remaining Performance Obligation	40.00%		40.00%
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Explanation			twelve months
Minimum [Member]
Significant Accounting Policies [Line Items]
Market value of the Company's common stock			$ 700,000
Revenue Benchmark [Member]
Significant Accounting Policies [Line Items]
Number of customers over ten percent benchmark \| Customers	3	4	3	3
Revenue Benchmark [Member] \| Revenue from Rights Concentration Risk [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage			10.00%
Software and Software Development Costs [Member]
Significant Accounting Policies [Line Items]
Intangible asset capitalized during period	$ 2,000	$ 800	$ 3,300	$ 1,300
Finite lived intangible asset, useful life			3 years
Internally Developed Software [Member]
Significant Accounting Policies [Line Items]
Amortization of intangible assets	$ 600	$ 300	$ 1,100	$ 600