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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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Identifies or describes the benchmark that serves as the denominator in the calculation of the percentage of concentration risk.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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