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Subsequent Events (Details)
In Millions, except Per Share data, unless otherwise specified
0 Months Ended
Jul. 08, 2011
EUR (€)
Jul. 01, 2011
USD ($)
May 06, 2011
Five-Year Term Loan Facility [Member]
USD ($)
Jul. 08, 2011
Tekla Corporation [Member]
EUR (€)
Jul. 08, 2011
Tekla Corporation [Member]
USD ($)
Public tender offer issued and outstanding price per share       € 14.20  
Common Stock Dividends Per Share Cash Paid € 0.80        
Common Stock, Dividends Paid € 18        
Percentage Of Outstanding Common Stock, Shares Acquired 99.46%        
Aggregate equity purchase price       319 454
Tender offer expiration date 10        
Credit facility, amount outstanding   $ 125.0 $ 400.0