Note 3 - Long-term Debt (Details) - Long-term Debt Summary (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Long-term debt:
Outstanding principal	$ 842,900	$ 832,900
Less current portion	(224)
Net carrying value	842,650	832,867
Borrowing availability under the 2012 Senior Credit Facility	30,000	40,000
2012 Senior Credit Facility [Member]
Long-term debt:
2012 Senior Credit Facility	159,000	535,000
2020 Notes [Member]
Long-term debt:
2020 Notes	675,000	300,000
Plus unamortized premium or less unamortized discount on our 2020 Notes	5,826	(2,133)
Excalibur Loan [Member]
Long-term debt:
Outstanding principal	3,000
Other Long-term Debt [Member]
Long-term debt:
Outstanding principal	48
Long-term Debt Before Unamortized Premium or Discount [Member]
Long-term debt:
Outstanding principal	$ 837,048	$ 835,000