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Balance Sheet Details (Tables)
 3 Months Ended
Mar. 31, 2013
Balance Sheet Details [Abstract]  
Inventories
Inventories consist of the following:
 
   
March 31,
  
December 31,
 
   
2013
  
2012
 
Raw materials
 $186,551  $168,459 
Work-in-process
  10,274   8,580 
Finished goods
  68,402   55,777 
Reserves for excess and obsolescence
  (6,406)  (6,999)
   Total
 $258,821  $225,817 
Property and equipment
Property and equipment consists of the following:
 
   
March 31,
  
December 31,
 
   
2013
  
2012
 
Land and improvements
 $6,559  $6,511 
Buildings and improvements
  69,317   68,934 
Machinery and equipment
  45,751   42,581 
Dies and tools
  16,016   15,406 
Vehicles
  1,889   1,872 
Office equipment
  13,431   12,993 
Leasehold improvements
  
1,406
   
1,393
 
Construction in progress  
3,016
   
3,439
 
Gross property and equipment
  157,385   153,129 
Accumulated depreciation
  (50,911)  (48,411)
Total
 $106,474  $104,718 
Other accrued liabilities
Other accrued liabilities consist of the following:
 
   
March 31,
  
December 31,
 
   
2013
  
2012
 
Accrued commissions
 $8,620  $7,467 
Accrued interest
  14,060   15,809 
Product warranty obligations – short term
  33,242   28,752 
Accrued dividends for unvested restricted stock
  1,222   3,957 
Accrued volume rebates
  5,299   7,991 
Accrued customer prepayments
  3,098   6,569 
Other accrued selling expenses
  8,636   7,753 
Other accrued liabilities
  8,211   7,783 
Total
 $82,388  $86,081 
Other long term liabilities
Other long-term liabilities consist of the following:
 
   
March 31,
  
December 31,
 
   
2013
  
2012
 
Accrued pension costs
 $23,338  $23,174 
Product warranty obligations – long term
  22,007   20,833 
Other long-term liabilities
  1,954   2,335 
Total
 $47,299  $46,342