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 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS        
Net sales revenue, rebate portion of volume incentives $ 10,695 $ 11,356 $ 22,286 $ 22,938