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Note 3 - Long-term Debt (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
 
 
September 30,
 
 
December 31,
 
 
 
2016
 
 
2015
 
Long-term debt including current portion:
               
Senior Credit Facility
  556,438     556,438  
2020 Notes
    -       675,000  
2024 Notes
    525,000       -  
2026 Notes
    700,000       -  
Total outstanding principal
    1,781,438       1,231,438  
Unamortized deferred loan costs - Senior Credit Facility
    (12,857 )     (6,136 )
Unamortized deferred loan costs - 2020 Notes
    -       (9,317 )
Unamortized deferred loan costs - 2024 Notes
    (7,971 )     -  
Unamortized deferred loan costs - 2026 Notes
    (10,834 )     -  
Unamortized premium - 2020 Notes
    -       4,099  
Unamortized premium - 2026 Notes
    5,949       -  
Net carrying value
  $ 1,755,725     $ 1,220,084  
                 
Borrowing availability under the Revolving Credit Facility
  $ 60,000     $ 50,000