Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments Financial Instruments - Schedule of Interest Rate Derivatives (Details)

v2.4.0.8
Financial Instruments Financial Instruments - Schedule of Interest Rate Derivatives (Details) (Interest Rate Contract [Member], Not Designated as Hedging Instrument [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Noncurrent Derivative Assets [Member]
   
Derivatives, Fair Value [Line Items]    
Interest Rate Derivative Assets, at Fair Value $ 71,170 $ 98,123
Other Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Interest Rate Derivative Liabilities, at Fair Value $ 19,544 $ 13,484