Basis of Presentation and Summary of Significant Accounting Policies - Adjustments (Details) - USD ($) $ / shares in Units, $ in Thousands  | 
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2024  | 
Jun. 30, 2023  | 
Jun. 30, 2024  | 
Jun. 30, 2023  | 
Jun. 30, 2022  | 
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| Product Information [Line Items] | |||||
| Revenue | $ 2,100 | $ 1,900 | |||
| Diluted net loss per share (in usd per share) | $ 0.01 | $ (0.01) | $ 0.01 | $ (0.01) | |
| Professional Engineering Services Contracts | |||||
| Product Information [Line Items] | |||||
| Revenue | $ 1,264 | $ (1,145) | $ 1,003 | $ (1,500) | |
| Basic net loss per share (in usd per share) | $ 0.01 | $ (0.01) | $ 0.01 | $ (0.01) | |
| X | ||||||||||
- Definition Equivalent Annual Cost Adjustment To Revenue No definition available. 
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| X | ||||||||||
- Definition Pro Forma Basic Earnings Per Share Adjustment to reconcile between Net Income and Pro Forma. No definition available. 
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| X | ||||||||||
- Definition Pro forma diluted earnings per share adjustment to reconcile between net income and pro forma amounts. No definition available. 
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| X | ||||||||||
- Definition 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. No definition available. 
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| X | ||||||||||
- Details 
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