Annual report pursuant to Section 13 and 15(d)

ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES. (Details 1)

v3.19.1
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES. (Details 1) - Purchases [Member]
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Supplier A [Member]      
Concentration percentage 17.00% 14.00% 13.00%
Supplier B [Member]      
Concentration percentage 14.00% 13.00% 4.00%
Supplier C [Memebr]      
Concentration percentage 11.00% 9.00% 13.00%
Supplier D [Memebr]      
Concentration percentage 10.00% 10.00% 8.00%