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Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Statement [Abstract]        
Revenues $ 5,625 $ 5,087 $ 9,127 $ 10,088
Cost of goods sold        
Cost of goods sold 5,130 4,838 8,473 9,662
Write down of inventory 546 546
Total cost of goods sold 5,130 5,384 8,473 10,208
Gross profit (loss) 495 (297) 654 (120)
Operating expenses        
Selling, general and administrative 1,240 877 2,506 2,812
Foreign exchange loss 10
Total operating expenses 1,240 887 2,506 2,812
Loss from continuing operations (745) (1,184) (1,852) (2,932)
Interest income (95) (77) (189) (188)
Other expense (income) 36 (449) (1,307) 832
Loss before taxes (686) (658) (356) (3,576)
Income tax expense (benefit) 2 (21) 5
Net loss $ (686) $ (660) $ (335) $ (3,581)
Loss per share:        
Basic $ (0.08) $ (0.08) $ (0.04) $ (0.41)
Diluted $ (0.08) $ (0.08) $ (0.04) $ (0.41)
Weighted average common shares outstanding:        
Basic 8,726 8,726 8,726 8,726
Diluted 8,726 8,726 8,726 8,726