Annual report pursuant to Section 13 and 15(d)

Financial Instruments - Interest Rate Derivatives Market Adjustments (Details)

v2.4.0.8
Financial Instruments - Interest Rate Derivatives Market Adjustments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]      
Change in fair value of interest rate cash flow hedges $ 21,297 $ (27,104) $ 0
Loss on settlements retained in other comprehensive income (30) (136) 0
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
     
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net   (21,290)  
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 0 0  
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 0 0  
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
     
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net 0 (5,814)  
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 0 0  
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 5,807 0  
Gain (Loss) on Settlement of Derivative Instrument [Member] | Interest Rate Contract [Member]
     
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net   (136)  
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 0 0  
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net $ 166 $ 0