Inventory (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventory, finished goods, trial and evaluation hardware	$ 1,400	$ 1,400
Raw materials	20,789	19,670
Finished goods	18,056	14,093
Total inventory	$ 38,845	$ 33,763

Inventory, Finished Goods, Trial And Evaluation Hardware

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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

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