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Operating segments (Tables)
12 Months Ended
Dec. 31, 2021
Operating Segments [Abstract]  
Disclosure of geographical areas
Revenues from continuing operations by geographic area, which are attributed to countries based on customer location for the years ended December 31, are as follows:
Revenues20212020
China$38,818 $54,267 
Germany22,063 23,032 
United States17,536 8,010 
United Kingdom8,968 7,876 
Canada3,063 1,259 
Denmark3,026 1,171 
Norway2,521 436 
Belgium2,121 2,673 
France1,827 1,090 
Japan954 2,695 
Spain926 128 
Taiwan912 1,008 
Poland541 — 
India439 — 
Ukraine244 — 
Sweden129 — 
Other countries417 232 
$104,505 $103,877 

Non-current assets by geographic area are as follows:
December 31,December 31,
Non-current assets20212020
Canada$157,805 $88,128 
China29,009 27,577 
United Kingdom17,552 — 
United States4,121 4,107 
Denmark3,270 1,472 
$211,757 $121,284