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Concentration of Credit Risk (Tables)
9 Months Ended
Sep. 30, 2019
Concentration Of Credit Risk [Abstract]  
Schedule of credit risk with respect to customers as percentage of sales
   Net sales         
   Three months ended   Nine months ended   Accounts receivable 
   September 30,
2019
   September 30,
2018
   September 30,
2019
   September 30,
2018
   September 30,
2019
   December 31,
2018
 
Customer A   17%   -    12%   -    28%   - 
Customer B   11%   23%   12%   25%   -    22%
Customer C   -    11%   10%   13%   -    14%
Customer D   -    -    -    -    13%   - 
Customer E   -    -    -    -    10%   - 
Customer F   -    -    -    -    -    11%