Consolidated Balance Sheet Detail - Schedule of Inventory (Detail) - USD ($) $ in Thousands	Apr. 30, 2019	Jan. 31, 2019
Inventory Disclosure [Abstract]
Components and assemblies	$ 163	$ 763
Finished products	595	161
Total inventory	$ 758	$ 924

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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