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Revenue (Details Textual)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018
Revenue (Textual)
Revenue, description	We had a backlog of orders (representing purchase orders received from customers which were not fulfilled or paid) worth approximately $1,245,000.	We had received orders representing a backlog worth approximately $393,000.

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- References

No definition available.

+ Details

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- Definition

Description of the transaction or nature of business giving rise to deferred revenue or unearned revenue, other than annual membership fees. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765

+ Details

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