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Accrued Expenses
12 Months Ended
Dec. 31, 2011
Accrued Expenses [Abstract]  
Accrued Expenses

7. ACCRUED EXPENSES

Accrued expenses at December 31 consist of the following (in thousands):

  2011 2010
Compensation $ 26,459 $ 12,981
Customer rebates   9,102   7,209
Insurance   8,740   8,497
Other   16,386   8,098
Total accrued expenses $ 60,687 $ 36,785