Note 3 - Long-term Debt (Details) - Long-term Debt Summary (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Long-term debt:
Outstanding principal	$ 1,231,438us-gaap_DebtInstrumentCarryingAmount
Total outstanding principal	1,231,438	837,048
Less current portion		(224)us-gaap_LongTermDebtCurrent
Net carrying value	1,236,401us-gaap_LongTermDebtNoncurrent	842,650us-gaap_LongTermDebtNoncurrent
2014 Senior Credit Facility [Member]
Long-term debt:
Credit facility	556,438
Outstanding principal	556,438
Borrowing availability, credit facility	50,000
2012 Senior Credit Facility [Member]
Long-term debt:
Credit facility		159,000
Borrowing availability, credit facility		30,000
2020 Notes [Member]
Long-term debt:
2020 Notes	675,000	675,000
Outstanding principal	675,000
Plus unamortized premium or less unamortized discount on our 2020 Notes	4,963	5,826
Excalibur Loan [Member]
Long-term debt:
Outstanding principal		3,000
Other Long-term Debt [Member]
Long-term debt:
Outstanding principal		$ 48

Total Long term debt including current portion and before unamortized premium or discount.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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