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INVENTORIES - COMPONENTS OF INVENTORIES (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Jun. 30, 2019
Inventory Disclosure [Abstract]    
Materials, purchased parts and supplies $ 36,692 $ 37,368
Work in process 10,867 6,021
Finished goods 17,608 3,834
Total $ 65,167 $ 47,223