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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Inventory, Net, Items Net of Reserve Alternative [Abstract]    
Finished goods $ 23,412 $ 17,528
Work in process 577 688
Component parts 14,915 14,880
Service parts 2,026 1,982
Inventories $ 40,930 $ 35,078