Note 5 - Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property and equipment	$ 247,249	$ 170,461
Less: accumulated depreciation and amortization	(102,613)	(85,290)
Total	144,636	85,171
Production Equipment and Software [Member]
Property and equipment	110,971	95,565
Building and Building Improvements [Member]
Property and equipment	100,990	48,964
Transportation Equipment [Member]
Property and equipment	11,443	11,291
Land [Member]
Property and equipment	16,883	8,285
Furniture and Fixtures [Member]
Property and equipment	3,641	3,518
Leasehold Improvements [Member]
Property and equipment	$ 3,321	$ 2,838

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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