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Subsequent Event (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 6 Months Ended
Jul. 31, 2012
Jun. 30, 2012
Jul. 11, 2012
Subsequent Event (Textual) [Abstract]      
Senior secured notes, issued     $ 125.0
Total cash receivables of senior secured notes 82.5    
Convertible subordinated notes remaining     172.5
Amount Reserved     25.0
Issuance of Debt [Member]
     
Subsequent Event (Textual) [Abstract]      
Senior secured notes, issued     125.0
Maturity date of Senior secured notes Jul. 15, 2017    
Retirement of convertible subordinated notes 42.5    
Issuance costs $ 4.3    
Interest rate     12.00%
Maturity date of convertible subordinated notes   Sep. 28, 2012