Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Departure Of Executive Officer) (Narrative) (Details)

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Commitments And Contingencies (Departure Of Executive Officer) (Narrative) (Details)
 9 Months Ended 12 Months Ended
May. 11, 2015
USD ($)
item
shares
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Commitments And Contingencies [Line Items]        
Severance benefits | $     $ 11,000,000 $ 23,800,000
Restricted stock units vested   249,795    
Accounts payable, accrued expenses and other liabilities | $   $ 136,673,000   126,971,000
Employee Severance [Member]        
Commitments And Contingencies [Line Items]        
Accounts payable, accrued expenses and other liabilities | $   $ 11,500,000   $ 11,600,000
Messr Hersh [Member]        
Commitments And Contingencies [Line Items]        
Severance benefits | $ $ 8,000,000      
Restricted stock units vested 210,000      
Period for continuation of health insurance   48 months    
Cash payment | $ $ 504,000      
Termination payment multiplier | item 210,000      
Deferred retirement compensation contribution | $ $ 2,311,792      
Total Stockholder Return Based Awards [Member]        
Commitments And Contingencies [Line Items]        
Restricted stock units vested   357    
Shares issued   45,062    
Total Stockholder Return Based Awards [Member] | Messr Hersh [Member]        
Commitments And Contingencies [Line Items]        
Restricted stock units vested 675      
Shares issued 41,811