Quarterly report pursuant to Section 13 or 15(d)

Sales (Details)

v3.19.3
Sales (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sales        
Sales (note 15) $ 5,115 $ 3 $ 21,406 $ 23,482
Disposal fee income     2 29
Sales Of Produced Inventory [Member]        
Sales        
Sales (note 15)     9,888 237
Sale Of Purchased Inventory [Member]        
Sales        
Sales (note 15)     11,516 23,216
Company A [Member] | Sales Of Produced Inventory [Member]        
Sales        
Sales (note 15)     2,406  
Company A [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Sales (note 15)     3,526  
Company B [Member] | Sales Of Produced Inventory [Member]        
Sales        
Sales (note 15)     7,482  
Company C [Member] | Sales Of Produced Inventory [Member]        
Sales        
Sales (note 15)       237
Company D [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Sales (note 15)     7,990 7,580
Company E [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Sales (note 15)       15,636
Company A, B, C, D [Member]        
Sales        
Sales (note 15)     $ 21,404 $ 23,453
Customer Concentration Risk [Member]        
Sales        
Concentration Risk, Percentage     100.00% 100.00%
Disposal Fees Concentration Risk Percentage     0.00% 0.10%
Customer Concentration Risk [Member] | Sales Of Produced Inventory [Member]        
Sales        
Concentration Risk, Percentage     46.20% 1.00%
Customer Concentration Risk [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Concentration Risk, Percentage     53.80% 98.90%
Customer Concentration Risk [Member] | Company A [Member] | Sales Of Produced Inventory [Member]        
Sales        
Concentration Risk, Percentage     11.20% 0.00%
Customer Concentration Risk [Member] | Company A [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Concentration Risk, Percentage     16.50% 0.00%
Customer Concentration Risk [Member] | Company B [Member] | Sales Of Produced Inventory [Member]        
Sales        
Concentration Risk, Percentage     35.00% 0.00%
Customer Concentration Risk [Member] | Company C [Member] | Sales Of Produced Inventory [Member]        
Sales        
Concentration Risk, Percentage     0.00% 1.00%
Customer Concentration Risk [Member] | Company D [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Concentration Risk, Percentage     37.30% 32.30%
Customer Concentration Risk [Member] | Company E [Member] | Sale Of Purchased Inventory [Member]        
Sales        
Concentration Risk, Percentage     0.00% 66.60%
Customer Concentration Risk [Member] | Company A, B, C, D [Member]        
Sales        
Concentration Risk, Percentage     100.00% 99.90%