Concentrations (Details Textual)	6 Months Ended		12 Months Ended
	Jun. 30, 2018 Customer Supplier	Jun. 30, 2017 Customer	Dec. 31, 2017 Supplier
Accounts receivable [Member]
Concentrations (Textual)
Concentration risk percentage	10.00%		10.00%
Accounts payable [Member] | Supplier one [Member]
Concentrations (Textual)
Concentration risk percentage	12.00%		15.00%
Number of customers | Supplier	1		1
Revenue [Member]
Concentrations (Textual)
Concentration risk percentage	40.00%	12.00%
Number of customers	2	1
Revenue [Member] | Customer one [Member]
Concentrations (Textual)
Concentration risk percentage	28.00%
Number of customers	2
Revenue [Member] | Customer two [Member]
Concentrations (Textual)
Concentration risk percentage	12.00%
Number of customers	2
Purchase [Member] | Suppliers [Member]
Concentrations (Textual)
Concentration risk percentage	10.00%	10.00%