v3.22.4
Property, plant and equipment - Rollforward (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance $ 56,061  
Impairment (7) $ (263)
Property, plant and equipment, ending balance 82,361 56,061
Cost    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 95,860 83,977
Additions 33,932 13,158
Additions through Acquisition   16
Impairment (7) (263)
Transfers (1,792) (1,022)
Effect of movements in exchange rates 6 (6)
Property, plant and equipment, ending balance 127,999 95,860
Accumulated amortization    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance (52,005) (47,417)
Transfers (1,792) (1,022)
Effect of movements in exchange rates 8 (45)
Depreciation 7,434 5,655
Property, plant and equipment, ending balance (57,655) (52,005)
Computer equipment    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 1,599  
Property, plant and equipment, ending balance 1,207 1,599
Computer equipment | Cost    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 6,852 6,635
Additions 181 442
Additions through Acquisition   0
Impairment 0 0
Transfers (290) (225)
Effect of movements in exchange rates (2) 0
Property, plant and equipment, ending balance 6,741 6,852
Computer equipment | Accumulated amortization    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance (5,253) (4,789)
Transfers (290) (175)
Effect of movements in exchange rates (3) (15)
Depreciation 574 654
Property, plant and equipment, ending balance (5,534) (5,253)
Furniture and fixtures    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 762  
Property, plant and equipment, ending balance 1,323 762
Furniture and fixtures | Cost    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 1,914 1,754
Additions 700 164
Additions through Acquisition   0
Impairment 0 0
Transfers (208) (4)
Effect of movements in exchange rates 0 0
Property, plant and equipment, ending balance 2,406 1,914
Furniture and fixtures | Accumulated amortization    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance (1,152) (1,097)
Transfers (208) (4)
Effect of movements in exchange rates 0 (4)
Depreciation 139 63
Property, plant and equipment, ending balance (1,083) (1,152)
Leasehold improvements    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 1,518  
Property, plant and equipment, ending balance 1,550 1,518
Leasehold improvements | Cost    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 9,450 9,196
Additions 388 274
Additions through Acquisition   0
Impairment 0 0
Transfers (185) (18)
Effect of movements in exchange rates (3) (2)
Property, plant and equipment, ending balance 9,650 9,450
Leasehold improvements | Accumulated amortization    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance (7,932) (7,638)
Transfers (185) (18)
Effect of movements in exchange rates 0 (19)
Depreciation 353 331
Property, plant and equipment, ending balance (8,100) (7,932)
Production and test equipment    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 39,976  
Property, plant and equipment, ending balance 66,264 39,976
Production and test equipment | Cost    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance 77,644 66,392
Additions 32,663 12,278
Additions through Acquisition   16
Impairment (7) (263)
Transfers (1,109) (775)
Effect of movements in exchange rates 11 (4)
Property, plant and equipment, ending balance 109,202 77,644
Production and test equipment | Accumulated amortization    
Property, Plant and Equipment [Roll Forward]    
Property, plant and equipment, beginning balance (37,668) (33,893)
Transfers (1,109) (825)
Effect of movements in exchange rates 11 (7)
Depreciation 6,368 4,607
Property, plant and equipment, ending balance $ (42,938) $ (37,668)