Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical)

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS    
Net sales revenue, rebate portion of volume incentives $ 11,591 $ 11,582