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Note 3 - Supplemental Balance Sheet Information - Components of Inventory (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Note 3 - Supplemental Balance Sheet Information - Components Of Inventory Details
Raw materials	$ 15,100us-gaap_InventoryRawMaterials	$ 16,239us-gaap_InventoryRawMaterials
Work in process	1,489us-gaap_InventoryWorkInProcess	1,674us-gaap_InventoryWorkInProcess
Finished products	9,497us-gaap_InventoryFinishedGoods	8,140us-gaap_InventoryFinishedGoods
Total	$ 26,086us-gaap_InventoryNet	$ 26,053us-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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-Publisher SEC

-Name Regulation S-X (SX)

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

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