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LONG-TERM DEBT LIABILITIES - Senior Debt (Details) - Jun. 30, 2015 - USD ($)
$ in Millions
Total
Debt Instrument [Line Items]  
Credit Facility $ 425.0
Mandatory Prepayment Percentage 50.00%
Line of Credit Facility, Amount Outstanding $ 260.5
Revolving Credit Facility  
Debt Instrument [Line Items]  
Credit Facility 50.0
Line of Credit Facility, Amount Outstanding 49.3
Term Loan B  
Debt Instrument [Line Items]  
Credit Facility $ 375.0