Revenue (Details Textual) - USD ($)	1 Months Ended	3 Months Ended
Jun. 30, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Revenue (Textual)
Revenue, description	We cleared all of this backlog (approximately $901,000)	We had received orders representing backlogs worth approximately $393,000 and $276,000, respectively.	We had a backlog of orders (representing purchase orders received from customers which were not fulfilled or paid) worth approximately $1,245,000.
Received orders from backlogs		$ 276,000		$ 393,000

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.

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

Name:	us-gaap_DeferredRevenueDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration