Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

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Basis of Presentation (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2011
Sep. 30, 2011
Sep. 30, 2011
Jul. 08, 2011
Sep. 30, 2012
Belarusian subsidiary
Sep. 30, 2012
Belarusian subsidiary
Classification of Belarus as a Highly Inflationary Economy and Devaluation of Its Currency            
Net sales revenue (as a percent)         1.60% 1.50%
Contract Termination Costs            
Settlement amount $ 21,700          
Previously accrued but unpaid royalties       6,950    
Contract termination costs $ 14,750 $ 14,750 $ 14,750