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Commitments and Contingencies (Details) - USD ($)
6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Litigation Settlement [Line Items]    
Self Insurance Reserve $ 76,900,000 $ 76,600,000
Pending Litigation [Member]    
Litigation Settlement [Line Items]    
Litigation Settlement, Amount 24,000,000  
Pending Litigation [Member] | Maximum [Member]    
Litigation Settlement [Line Items]    
Proceeds from Legal Settlements 800,000  
Pending Litigation [Member] | Minimum [Member]    
Litigation Settlement [Line Items]    
Proceeds from Legal Settlements $ 1,000,000