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Goodwill and Intangible Assets - Schedule of goodwill (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Goodwill    
Balance at beginning of year $ 151,117 $ 146,954
Foreign currency adjustment (2,170) (5,391)
Balance at end of year 148,954 151,117
CTSA and F-airGate    
Goodwill    
Goodwill acquired during period   6
Cell & Co    
Goodwill    
Goodwill acquired during period   2,785
Polar Express    
Goodwill    
Goodwill acquired during period $ 7 1,828
Cell Matters    
Goodwill    
Goodwill acquired during period   $ 4,935