Quarterly report pursuant to Section 13 or 15(d)

Commitments, Contingencies and Other Liabilities (Details)

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Commitments, Contingencies and Other Liabilities (Details) (Negligence, USD $)
0 Months Ended
Nov. 16, 2011
Jun. 30, 2013
Dec. 31, 2012
Negligence
     
Commitments and Contingencies      
Amount awarded to plaintiff $ 8,600,000    
Portion of award expected to be covered by insurance 6,000,000    
Legal reserves   9,517,000  
Insurance receivable   6,877,000  
Amount held in escrow related to certain financial obligations   $ 2,640,000 $ 2,640,000