Note 6 - Balance Sheet Details (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 245,196us-gaap_PropertyPlantAndEquipmentGross	$ 238,222us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(73,812)	(69,401)
Total	171,384us-gaap_PropertyPlantAndEquipmentNet	168,821us-gaap_PropertyPlantAndEquipmentNet
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	7,861	7,803
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	102,376	102,254
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	66,261	65,240
Dies and Tools [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	17,863	16,897
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,391	1,383
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	26,730	21,990
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,542	2,535
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 20,172	$ 20,120

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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