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Long-term Debt - Aggregate maturities of long-term debt (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Jun. 30, 2013
Long-Term Debt [Abstract]    
2014 $ 41,562  
2015 41,563  
2016 41,563  
2017 83,125  
2018 1,253,437  
Principal amount of long-term debt 1,461,250 611,250
Less unamortized discount (4,653) (11,421)
Less unamortized debt issuance costs (6,029) (3,522)
Total long-term debt $ 1,450,568 $ 596,307