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Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Summary of Significant Accounting Policies [Line Items] |  |  |
Expenditures for repairs and improvements | $ 10,000 |  |
Contract costs receivable | 296,000 | $ 296,000 |
Customer deposits | 3,557,000 | 781,000 | $ 1,470,000
Revenue recognized from customer deposits | 461,000 | 440,000 |
Backlog relating to remaining performance obligations in contracts | 98,300,000 |  |
Impairment charge |  | 163,000 |
Cost of freight outward | 87,000 | 162,000 |
Employee [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Stock based compensation | 283,000 | 310,000 |
Director [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Stock based compensation | $ 200,000 | $ 216,000 |

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