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Goodwill and intangible assets - Schedule of impairment charge recorded for various categories of assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets, finite-lived $ 205 $ 6,117 $ 3,511
Impairment of property, plant and equipment 710 7,966 0
Grand Total 915 14,083 3,511
Property, plant and equipment      
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of property, plant and equipment 710 7,966 0
Technology-related intangible assets      
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets, finite-lived 205 5,179 3,511
Customer-related intangible assets      
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets, finite-lived $ 0 $ 938 $ 0