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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2024 USD ($) Customers FinancialInstitution | Dec. 31, 2023 USD ($) Customers | Dec. 31, 2022 USD ($) Customers
Significant Accounting Policies [Line Items] |  |  |
Amortization of intangible assets | $ 5,600,000 | $ 3,200,000 | $ 1,600,000
Impairment of Long-Lived Assets to be Disposed of | 0 | 0 | 0
Advertising Expense | 200,000 | 900,000 | 1,300,000
Letters of credit outstanding amount | 2,100,000 | 2,100,000 |
Allowance for doubtful accounts | 0 | 0 |
Capitalized materials and supplies | 7,200,000 | 3,600,000 | 1,300,000
Goodwill, impairment loss | 0 | 0 | 0
Interest and penalties related to income tax expense | 0 | 0 | 0
Uncertain income tax positions | $ 0 | 0 |
Number of financial institutions | FinancialInstitution | 3 |  |
Excess and Obsolescence [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Excess and obsolescence charges | $ 1,300,000 |  |
Capitalized Commissions [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Capitalized contract cost | 2,400,000 | 2,800,000 |
Capitalized contract cost amortization expense | $ 1,700,000 | 600,000 |
Maximum [Member] | Excess and Obsolescence [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Excess and obsolescence charges |  | $ 100,000 | 100,000
Maximum [Member] | Capitalized Commissions [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Capitalized contract cost amortization expense |  |  | $ 100,000
Revenue Benchmark [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Number of customers over ten percent benchmark | Customers | 2 | 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 | 77.00% | 58.00% |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customer [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentration risk, percentage |  |  | 70.00%
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 [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortization of intangible assets | $ 5,300,000 | $ 2,900,000 | $ 1,500,000
Intangible asset capitalized during period | 6,800,000 | 8,000,000 | 3,200,000
Software and Software Development Costs [Member] | External Use [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Intangible asset capitalized during period | $ 0 | $ 0 | $ 0

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