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Contingent Liability Contingent Liability(Details) (USD $)
1 Months Ended
Jan. 31, 2012
Jun. 30, 2013
Loss Contingencies [Line Items]    
Tax Penalties $ 9,500,000  
Liability related to tax positions   1,200,000
Third Party Payment Default [Member]
   
Loss Contingencies [Line Items]    
Loss Contingency, Range of Possible Loss, Minimum   $ 0