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Subsequent Event - Sale of TPack A/S - Additional Information (Details) (Sale of Tpack [Member], USD $)
In Millions, unless otherwise specified
0 Months Ended
Apr. 22, 2013
Apr. 12, 2013
Sale of Tpack [Member]
   
Subsequent Event [Line Items]    
Agreed upon percent of consolidated entity sold   100.00%
Agreed upon price for sale of entity   $ 34.0
Adjusted sale price of entity 33.5  
Proceeds from sale of entity 30.2  
Consideration receivable by company $ 3.3