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Note 3 - Long-term Debt (Details) (USD $) | 12 Months Ended | 21 Months Ended | 12 Months Ended |  | 1 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2015 Scenario, Forecast [Member] Certain Equity Offering [Member] Maximum [Member] 2020 Notes [Member] | Sep. 30, 2015 Scenario, Forecast [Member] 2020 Notes [Member] | Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] 2012 Term Loan [Member] | Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] Excalibur Loan [Member] | Dec. 31, 2013 Federal Funds Rate [Member] Excalibur Loan [Member] | Dec. 31, 2013 2012 Senior Credit Facility [Member] Revolving Credit Facility [Member] | Oct. 18, 2013 2012 Senior Credit Facility [Member] 2012 Term Loan [Member] | Dec. 31, 2013 2012 Senior Credit Facility [Member] 2012 Term Loan [Member] | Dec. 31, 2012 2012 Senior Credit Facility [Member] | Dec. 31, 2013 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Excalibur Loan [Member] | Jul. 31, 2013 Excalibur Loan [Member] | Oct. 18, 2013 2020 Notes [Member] | Dec. 31, 2012 2020 Notes [Member] | Dec. 31, 2013 2020 Notes [Member] | Oct. 18, 2013 2020 Additional Notes [Member] | Dec. 31, 2013 2020 Additional Notes [Member] | Dec. 31, 2012 2015 Notes [Member] | Dec. 31, 2013 2012 Senior Credit Facility [Member] | Dec. 31, 2012 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Dec. 31, 2013 Minimum [Member] Base Rate [Member] 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Minimum [Member] Base Rate [Member] 2012 Term Loan [Member] | Dec. 31, 2013 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member] 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member] 2012 Term Loan [Member] | Dec. 31, 2013 Minimum [Member] 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Maximum [Member] Base Rate [Member] 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Maximum [Member] Base Rate [Member] 2012 Term Loan [Member] | Dec. 31, 2013 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member] 2012 Senior Credit Facility [Member] | Dec. 31, 2013 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member] 2012 Term Loan [Member] | Dec. 31, 2013 Maximum [Member] Revolving Loan [Member]
Note 3 - Long-term Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 40,000,000 |  | $ 555,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  |  |  | 535,000,000 | 159,000,000 |  |  |  |  |  |  |  |  |  | 535,000,000 |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  | 4.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Finance Costs, Net |  |  |  |  |  |  |  |  |  |  |  | 4,600,000 |  | 200,000 |  |  | 7,100,000 | 13,200,000 |  |  |  | 3,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% | 2.50% | 2.00% | 3.50% |  | 1.50% | 2.75% | 2.50% | 3.75% |
Debt Instrument, Basis Spread on Variable Rate, Floor |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate, Base Rate Calculation |  |  |  |  |  |  | 1.00% | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.375% |  |  |  |  | 0.50%
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | 30,000,000 | 40,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |
Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 | 675,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.75% |  |  | 7.30% | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |  |  | 375,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 35.00% | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 102.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Unsecured Notes Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 383,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Senior Debt |  |  |  |  |  |  |  |  |  | 376,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross | 837,048,000 |  |  |  |  |  |  |  |  |  |  |  | 159,000,000 | 3,000,000 |  |  |  | 675,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense, Debt | 52,445,000 | 59,443,000 | 61,777,000 |  |  |  |  |  |  |  |  |  |  | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains (Losses) on Extinguishment of Debt |  | (46,683,000) |  |  |  |  |  |  |  |  |  | (8,100,000) |  |  |  |  |  |  |  |  | (38,600,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  | 9,900,000 |  |  |  |  | 7,300,000 |  |  | 7,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Debt, Net of Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 290,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Paid | $ 49,400,000 | $ 53,300,000 | $ 57,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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