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Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Customer deposits | $ 2,261,000 |  | $ 2,261,000 |  | $ 3,557,000
Customer deposits revenue |  |  | 1,296,000 |  |
Backlog relating to remaining performance obligations in contracts | 100,700,000 |  | 100,700,000 |  |
Contract costs receivable | 296,000 |  | 296,000 |  | $ 296,000
Employees [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Stock-based compensation expense |  |  | 36,000 | $ 232,000 |
Customer Deposits [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Customer deposits revenue | 897,000 | $ 42,000 |  | 314,000 |
Employees [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Stock-based compensation expense | 12,000 | 187,000 |  |  |
Directors [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Stock-based compensation expense | $ 38,000 | $ 54,000 | $ 76,000 | $ 108,000 |

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