XML 60 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1
Inventories - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Oct. 31, 2018
Jan. 31, 2018
Inventory Disclosure [Abstract]    
Work-in-progress $ 12,483 $ 12,073
Finished goods 10,845 11,310
Total $ 23,328 $ 23,383