XML 55 R44.htm IDEA: XBRL DOCUMENT v3.20.2
Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Inventory, Net, Items Net of Reserve Alternative [Abstract]    
Finished goods $ 14,055 $ 8,320
Component parts 7,681 6,768
Service parts 5,377 4,238
Inventories-net 27,113 19,326
Inventory reserves $ 12,100 $ 9,600