Schedule of Revenues are Attributed to Geographic Areas by Principal Customers (Details) - Sales [Member]	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Customer A [Member]
Segment Reporting Information [Line Items]
Percentage of revenues per major customer	25.00%	0.00%
Customer B [Member]
Segment Reporting Information [Line Items]
Percentage of revenues per major customer	9.00%	12.00%
Customer C [Member]
Segment Reporting Information [Line Items]
Percentage of revenues per major customer	5.00%	11.00%
Customer D [Member]
Segment Reporting Information [Line Items]
Percentage of revenues per major customer	0.00%	13.00%
Customer E [Member]
Segment Reporting Information [Line Items]
Percentage of revenues per major customer	0.00%	11.00%