Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2024 USD ($) FinancialInstitution Customers $ / shares shares	Mar. 31, 2023 USD ($) Customers	Dec. 31, 2023 USD ($)	Sep. 30, 2021 shares
Significant Accounting Policies [Line Items]
Revenue, remaining performance obligation, amount	$ 61,800,000
Allowance for doubtful accounts	0		$ 0
Impairment of Long-Lived Assets to be Disposed of	0	$ 0
Accrued interest receivable on available-for-sale investments	1,900,000		2,100,000
Capitalized materials and supplies	$ 1,000,000	800,000
Warrant issue price | $ / shares	$ 11.5
Letters of credit outstanding amount	$ 2,100,000		2,100,000
Percentage Of Remaining Performance Obligation	40.00%
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Explanation	twelve months
Number of financial institutions | FinancialInstitution	3
Research and development expense	$ 32,368,000	16,233,000
Excess and Obsolescence [Member]
Significant Accounting Policies [Line Items]
Excess and obsolescence charges		0
Capitalized Commissions [Member]
Significant Accounting Policies [Line Items]
Capitalized contract cost	2,400,000		$ 2,800,000
Capitalized contract cost amortization expense	400,000	$ 100,000
Maximum [Member] | Excess and Obsolescence [Member]
Significant Accounting Policies [Line Items]
Excess and obsolescence charges	$ 100,000
Revenue Benchmark [Member]
Significant Accounting Policies [Line Items]
Number of customers over ten percent benchmark | Customers	2	3
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage	10.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customer [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage	69.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customer [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage		73.00%
Software and Software Development Costs [Member]
Significant Accounting Policies [Line Items]
Finite lived intangible asset, useful life	3 years
Software and Software Development Costs [Member] | Internal-Use Software [Member]
Significant Accounting Policies [Line Items]
Amortization of intangible assets	$ 1,100,000	$ 500,000
Intangible asset capitalized during period	2,600,000	1,300,000
Software and Software Development Costs [Member] | External-Use Software [Member]
Significant Accounting Policies [Line Items]
Intangible asset capitalized during period	$ 0	0
Public Warrants [Member]
Significant Accounting Policies [Line Items]
Number of warrants or rights outstanding | shares	5,228,253			7,500,000
Class of warrant redeemed | shares	0
Option Agreement [Member] | Duke [Member]
Significant Accounting Policies [Line Items]
Research and development expense	$ 100,000	$ 100,000