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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials and parts $ 97,409 $ 97,053
Work in process 29,805 24,618
Finished goods 185,159 182,954
Gross inventories 312,373 304,625
Inventory reserve (41,747) (62,885)
Inventories $ 270,626 $ 241,740