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Other Operational Loss (Details) (USD $)
In Thousands, unless otherwise specified
0 Months Ended 6 Months Ended
Sep. 29, 2010
Jun. 30, 2013
Jun. 30, 2012
Other Operational Loss [Line Items]      
Percentage Of Future Proceeds Sold 45.00%    
Other operational loss   $ 562 $ 0
Sale Of Future Claims Proceeds 5,000    
Settlement of a specific Commercial Claim mentioned in Other Operational Gain Note
     
Other Operational Loss [Line Items]      
Other operational loss   $ 562