Consolidated Balance Sheet Detail - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jul. 31, 2018	Jan. 31, 2018
Inventory Disclosure [Abstract]
Components and assemblies	$ 579	$ 426
Finished products	197	240
Total inventories, net	$ 776	$ 666

No definition available.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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