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Note 3 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
2014 Term Loan [Member]    
Long-term Debt, Gross $ 556,400  
2020 Notes [Member]    
Unsecured Debt $ 675,000 $ 675,000
Debt Instrument, Interest Rate, Stated Percentage 7.50%  
Debt Instrument, Interest Rate, Effective Percentage 7.30%  
Deferred Finance Costs, Net $ 9,800 11,300
2014 Senior Credit Facility [Member]    
Long-term Debt, Gross $ 556,438 556,438
Debt Instrument, Interest Rate, Stated Percentage 3.80%  
Deferred Finance Costs, Net $ 6,400 $ 7,400