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Balance Sheet Details (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Inventories [Abstract]    
Raw materials $ 182,789 $ 168,459
Work-in-process 10,064 8,580
Finished goods 109,818 55,777
Reserves for excess and obsolescence (6,623) (6,999)
Total 296,048 225,817
Property, Plant and Equipment [Line Items]    
Gross property and equipment 178,289 153,129
Accumulated depreciation (57,477) (48,411)
Total 120,812 104,718
Other accrued liabilities [Abstract]    
Accrued commissions 10,628 7,467
Accrued interest 11,434 15,809
Product warranty obligations - short term 36,709 28,752
Accrued dividends for unvested restricted stock 2,477 3,957
Accrued volume rebates 6,890 7,991
Accrued customer prepayments 3,144 6,569
Other accrued selling expenses 9,430 7,753
Other accrued liabilities 2,458 7,783
Total 83,170 86,081
Other long-term liabilities [Abstract]    
Accrued pension costs 23,171 23,174
Product warranty obligations - long term 21,150 20,833
Other long-term liabilities 12,827 2,335
Total 57,148 46,342
Land and improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 6,831 6,511
Buildings and improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 82,914 68,934
Machinery and Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 49,956 42,581
Dies and tools [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 16,865 15,406
Vehicles [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 1,916 1,872
Office equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 15,003 12,993
Leasehold improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 2,150 1,393
Construction in progress [Member]
    
Property, Plant and Equipment [Line Items]    
Gross property and equipment $ 2,654 $ 3,439