Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheet Detail - Schedule of Inventories (Detail)

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Consolidated Balance Sheet Detail - Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Oct. 31, 2016
Jan. 31, 2016
Inventory Disclosure [Abstract]    
Components and assemblies $ 473 $ 1,223
Finished products 525 459
Total inventories, net $ 998 $ 1,682