Annual report pursuant to Section 13 and 15(d)

Concentration of Risk (Details Textual)

v3.8.0.1
Concentration of Risk (Details Textual)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Customer [Member] | Sales Revenue, Net [Member]    
Concentration Risk [Line Items]    
Concentration Risk, Percentage 10.00% 10.00%