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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]    
Accounts receivable, allowances $ 74,749 $ 79,820
Property, plant and equipment, accumulated depreciation $ 228,061 $ 217,245
Common stock, shares issued 61,811 68,370
Treasury stock, shares   6,215