Note 6 - Balance Sheet Details (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 225,296	$ 206,731
Accumulated depreciation	(66,238)	(60,341)
Total	159,058	146,390
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	7,442	7,416
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	98,193	96,161
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	62,356	54,847
Dies and Tools [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	16,073	17,071
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,945	1,979
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	20,552	17,304
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,519	2,229
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 16,216	$ 9,724