Note 4 - Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Raw materials	$ 43,142	$ 43,017
Work in process	39,402	38,674
Finished goods	59,999	54,693
Total	$ 142,543	$ 136,384

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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