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)
 6 Months Ended 12 Months Ended
May. 11, 2015
USD ($)
item
shares
Jun. 30, 2015
USD ($)
shares
Jun. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Commitments And Contingencies [Line Items]        
Severance benefits     $ 11,000,000 $ 23,800,000
Restricted stock units vested | shares   37,392    
Accounts payable, accrued expenses and other liabilities   $ 134,089,000   126,971,000
Employee Severance [Member]        
Commitments And Contingencies [Line Items]        
Accounts payable, accrued expenses and other liabilities   $ 11,600,000   $ 11,600,000
Messr Hersh [Member]        
Commitments And Contingencies [Line Items]        
Severance benefits $ 8,000,000      
Restricted stock units vested | shares 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 | shares   357    
Shares issued | shares   45,062    
Total Stockholder Return Based Awards [Member] | Messr Hersh [Member]        
Commitments And Contingencies [Line Items]        
Restricted stock units vested | shares 675      
Shares issued | shares 41,811