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Indebtedness (Other Long-Term Debt Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2014
Other long-term debt [Member]
Jun. 30, 2014
Weighted Average [Member]
Other long-term debt [Member]
Debt Instrument [Line Items]        
Long-term debt $ 2,408,761 $ 2,107,096 $ 855  
Other long-term debt, average interest rate     6.30%  
Debt instrument, term       2 years