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Note 6 - Balance Sheet Details (Details) - Inventories (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Inventories [Abstract]
Raw material	$ 195,790us-gaap_InventoryRawMaterials	$ 184,407us-gaap_InventoryRawMaterials
Work-in-process	6,831us-gaap_InventoryWorkInProcess	8,798us-gaap_InventoryWorkInProcess
Finished goods	164,541us-gaap_InventoryFinishedGoods	135,567us-gaap_InventoryFinishedGoods
Reserves for excess and obsolete	(10,233)us-gaap_InventoryValuationReserves	(9,387)us-gaap_InventoryValuationReserves
Total	$ 356,929us-gaap_InventoryNet	$ 319,385us-gaap_InventoryNet

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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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