Balance Sheet Details - Inventories, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Raw materials	$ 5,813	$ 4,969
Work-in-process	952	502
Finished goods	40,165	37,933
Inventory, gross, total	46,930	43,404
Less reserve for excess and obsolete	(18,165)	(16,112)
Inventories, net	$ 28,765	$ 27,292

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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