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Note M - Sales Deductions (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Sales Allowances, Goods (in Dollars) $ 10,991 $ 8,311 $ 18,424 $ 14,351
Sales Allowance Goods Percentage 5.90% 6.40% 5.60% 6.20%