Annual report pursuant to Section 13 and 15(d)

Financial Instruments - Derivatives Gross Presentation on Condsolidated Balance Sheet (Details)

v2.4.0.8
Financial Instruments - Derivatives Gross Presentation on Condsolidated Balance Sheet (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivative [Line Items]    
Derivative, Collateral, Right to Reclaim Cash $ 5,900  
Fuel Derivatives [Member]
    
Derivative [Line Items]    
Derivative Liability, Fair Value, Gross Liability   (98)
Derivative Liability, Fair Value, Amount Offset Against Collateral   (98)
Derivative Liability, Fair Value, Net   0
Derivative Asset, Fair Value, Gross Asset 126  
Derivative Asset, Fair Value, Amount Offset Against Collateral 0  
Derivative Asset, Fair Value, Net 126  
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net 0 0
Derivative, Collateral, Right to Reclaim Cash 0 0
LNG Inventory Derivatives [Member]
    
Derivative [Line Items]    
Derivative Liability, Fair Value, Gross Liability (171)  
Derivative Liability, Fair Value, Amount Offset Against Collateral 171  
Derivative Asset, Fair Value, Gross Asset   237
Derivative Asset, Fair Value, Amount Offset Against Collateral   0
Derivative Asset, Fair Value, Net 0 237
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net 0 0
Derivative, Collateral, Right to Reclaim Cash 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Contract [Member]
    
Derivative [Line Items]    
Derivative Liability, Fair Value, Net   26,424
Derivative Asset, Fair Value, Net 84,639  
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
    
Derivative [Line Items]    
Derivative Liability, Fair Value, Gross Liability   (21,290)
Derivative Liability, Fair Value, Amount Offset Against Collateral   0
Derivative Liability, Fair Value, Net   (21,290)
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net   0
Derivative, Collateral, Right to Reclaim Cash   0
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
    
Derivative [Line Items]    
Derivative Liability, Fair Value, Gross Liability (13,484) (5,134)
Derivative Liability, Fair Value, Amount Offset Against Collateral 0 0
Derivative Liability, Fair Value, Net (13,484) (5,134)
Derivative Asset, Fair Value, Gross Asset 98,123  
Derivative Asset, Fair Value, Amount Offset Against Collateral 0  
Derivative Asset, Fair Value, Net 98,123  
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net 0 0
Derivative, Collateral, Right to Reclaim Cash $ 0 $ 0