Quarterly report pursuant to Section 13 or 15(d)

Deferred Charges, Goodwill and Other Assets, Net (Summary Of Notional Amount And Fair Value Of Derivative Financial Instruments) (Details)

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Deferred Charges, Goodwill and Other Assets, Net (Summary Of Notional Amount And Fair Value Of Derivative Financial Instruments) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Dec. 31, 2014
Derivatives, Fair Value [Line Items]      
Fair Value $ 3,000 $ 3,000 $ 95,000
Interest and other investment income (loss) (12,000) (92,000)  
LIBOR Cap One [Member]      
Derivatives, Fair Value [Line Items]      
Notional Value [1] $ 51,000,000 $ 51,000,000  
Strike Rate 1.50% 1.50%  
Effective Date   Sep. 01, 2014  
Expiration Date   Oct. 01, 2015  
Fair Value     1,000
LIBOR Cap Two [Member]      
Derivatives, Fair Value [Line Items]      
Notional Value [1] $ 24,000,000 $ 24,000,000  
Strike Rate 1.50% 1.50%  
Effective Date   Sep. 01, 2014  
Expiration Date   Oct. 01, 2015  
Fair Value     1,000
LIBOR Cap Three [Member]      
Derivatives, Fair Value [Line Items]      
Notional Value [1] $ 51,000,000 $ 51,000,000  
Strike Rate 1.75% 1.75%  
Effective Date   Oct. 01, 2015  
Expiration Date   Oct. 01, 2016  
Fair Value $ 2,000 $ 2,000 64,000
LIBOR Cap Four [Member]      
Derivatives, Fair Value [Line Items]      
Notional Value [1] $ 24,000,000 $ 24,000,000  
Strike Rate 1.75% 1.75%  
Effective Date   Oct. 01, 2015  
Expiration Date   Oct. 01, 2016  
Fair Value $ 1,000 $ 1,000 $ 29,000
[1] The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks.