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Summary of Significant Accounting Policies (Details Textual)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019 USD ($) Customer / Customers	Sep. 30, 2018 USD ($) Customer / Customers	Sep. 30, 2019 USD ($) Customer / Customers	Sep. 30, 2018 USD ($) Customer / Customers	Dec. 31, 2018 USD ($) Customer / Customers
Summary of Significant Accounting Policies (Textual)
Stock-based compensation	$ 81,000	$ 83,000	$ 446,000	$ 308,000
Goodwill	163,000		163,000		$ 163,000
NTW [Member]
Summary of Significant Accounting Policies (Textual)
Goodwill	$ 163,000		$ 163,000		$ 163,000
Sales [Member]
Summary of Significant Accounting Policies (Textual)
Number of customers | Customer / Customers	2	3	3	3
Concentration risks	61.70%	69.30%	73.40%	72.30%
Receivables [Member]
Summary of Significant Accounting Policies (Textual)
Number of customers | Customer / Customers			3		2
Concentration risks			54.60%		64.90%

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Number of customers.

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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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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Value, before forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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