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Note 3 - Long-term Debt (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
 
 
June 30,
 
 
December 31,
 
 
 
2016
 
 
2015
 
Long-term debt including current portion:
               
Senior Credit Facility
  $ 556,438     $ 556,438  
2020 Notes
    675,000       675,000  
2026 Notes
    500,000       -  
Total outstanding principal
    1,731,438       1,231,438  
Unamortized deferred loan costs - Senior Credit Facility
    (13,556 )     (6,136 )
Unamortized deferred loan costs - 2020 Notes
    (8,336 )     (9,317 )
Unamortized deferred loan costs - 2026 Notes
    (7,853 )     -  
Unamortized premium - 2020 Notes
    3,668       4,099  
Net carrying value
  $ 1,705,361     $ 1,220,084  
                 
Borrowing availability under the Revolving Credit Facility
  $ 60,000     $ 50,000