Basis of Presentation and Summary of Significant Accounting Policies - Professional Engineering Contracts (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Basic net loss per share (in usd per share)	$ (0.01)	$ (0.01)
Professional Engineering Services Contracts
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Revenue	$ (206)	$ (261)
Diluted net loss per share (in usd per share)	$ (0.01)	$ (0.01)

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.

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