Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivative Instruments Fair Value Measurements and Derivative Instruments (Derivative Financial Instruments) (Details)

v3.3.0.814
Fair Value Measurements and Derivative Instruments Fair Value Measurements and Derivative Instruments (Derivative Financial Instruments) (Details) - USD ($)
9 Months Ended
Feb. 02, 2015
Sep. 30, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Stock Appreciation Rights, Expiration Date 8 years  
Unsecured Debt [Member] | Searchlight ALX, LP Promissory Note [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt face amount $ 75,000,000.0  
Stock Appreciation Rights (SARs) [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value measurement with unobservable inputs, beginning balance   $ 0
Issuance   21,660,000
Fair value adjustment at end of period, included in Other Income (Expense)   5,040,000
Fair value measurement with unobservable inputs, ending balance   $ 26,700,000
Stock Appreciation Rights (SARs) [Member] | Common Stock - Class A [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Stock Appreciation Rights 3,000,000  
Exercise price of stock appreciation rights (per share) $ 13.00  
Stock Appreciation Rights (SARs) [Member] | Common Stock - Class A [Member] | Searchlight ALX, LP Promissory Note [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Stock Appreciation Rights 3,000,000  
Exercise price of stock appreciation rights (per share) $ 13.00