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Summary of Significant Accounting Policies (Details Textual) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) Customer / Customers | Dec. 31, 2019 USD ($) Customer / Customers | Dec. 23, 2020 USD ($)
Summary of Significant Accounting Policies (Textual) |  |  |
Stock-based compensation | $ 308,000 | $ 378,000 |
Goodwill | 163,000 | 163,000 |
Balance of escrow account | 1,380,684 |  | $ 1,380,684
Expenditures for repairs and improvements | 10,000 |  |
Impairment charge |  | 275,000 |
Freight out | 91,000 | 134,000 |
NTW [Member] |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |
Goodwill | 163,000 | 163,000 |
Director [Member] |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |
Stock-based compensation | $ 211,000 | $ 244,000 |
Total Sales [Member] |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |
Number of customers | Customer / Customers | 3 | 3 |
Concentration risks | 73.90% | 76.00% |
Credit and concentration risks, description | Customer was less than 10% of sales at December 31, 2020. | Customer was less than 10% of sales at December 31, 2019. |
Accounts Receivable [Member] |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |
Number of customers | Customer / Customers | 3 | 3 |
Concentration risks | 80.30% | 67.80% |

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