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Note 7 - Long-term Debt (Details Textual) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 03, 2019 | Jun. 25, 2018 | Mar. 28, 2016 | Dec. 31, 2019 | Dec. 31, 2018 | Aug. 02, 2018 | Dec. 31, 2017
Long-term Line of Credit, Total |  |  |  | $ 1,305,634 | $ 1,771,330 |  |
Long-term Debt, Total |  |  |  | $ 3,765,931 | 3,979,300 |  |
Debt Instrument, Fixed Quarterly Amortization of Principal Percentage |  |  |  | 5.00% |  |  |
Debt Instrument Prepayment Fee, Percentage |  |  |  | 1.00% |  |  |
Long-term Debt, Gross |  |  |  | $ 3,813,956 | $ 4,030,035 |  |
Senior Notes 6.875% Due 2023 [Member] |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.875% | 6.875% |  | 6.875%
Bank Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 945,500 |  |  |
Long-term Line of Credit, Total |  |  |  | 1,300,000 |  |  |
Long-term Debt, Total |  |  |  | 41,300 |  |  |
Letters of Credit Outstanding, Amount |  |  |  | 12,600 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | $ 656,600 |  |  |
Bank Credit Facility [Member] | Eurodollar [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.00% |  |  |
Bank Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 0.50% |  |  |
Bank Credit Facility [Member] | Term Loan A, Joinder Agreement [Member] |  |  |  |  |  |  |
Long-term Line of Credit, Additional Available Borrowing Capacity |  |  |  |  |  | $ 49,500 |
Long-term Line of Credit, Total |  |  |  |  |  | 234,300 |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] |  |  |  |  |  |  |
Long-term Debt, Total |  |  |  | $ 984,416 |  |  |
Debt Instrument, Face Amount | $ 1,000,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.75% |  |  | 4.75% | 4.75% |  |
Debt Issuance Costs, Gross | $ 15,700 |  |  |  |  |  |
Debt Instrument, Conditional Repurchase Price Percent of Principal | 101.00% |  |  |  |  |  |
Debt Instrument, Additional Interest Accrued After Covenants | 0.25% |  |  |  |  |  |
Debt Instrument, Contingent Liability | $ 0 |  |  |  |  |  |
Long-term Debt, Gross |  |  |  | $ 1,000,000 |  |  |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Prior to December 1, 2022 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 100.00% |  |  |  |  |  |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] | In 2022 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 102.375% |  |  |  |  |  |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] | In 2024 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 100.00% |  |  |  |  |  |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument, Additional Interest Accrued After Covenants | 1.00% |  |  |  |  |  |
Senior Notes [Member] | Senior Notes 6.000% Due 2026 [Member] |  |  |  |  |  |  |
Long-term Debt, Total |  |  |  | $ 690,756 | $ 689,361 |  |
Debt Instrument, Face Amount |  | $ 700,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.00% |  | 6.00% | 6.00% |  |
Debt Issuance Costs, Gross |  | $ 11,300 |  |  |  |  |
Debt Instrument, Conditional Repurchase Price Percent of Principal |  | 101.00% |  |  |  |  |
Long-term Debt, Gross |  |  |  | $ 700,000 | $ 700,000 |  |
Senior Notes [Member] | Senior Notes 6.000% Due 2026 [Member] | In 2024 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 100.00% |  |  |  |  |
Senior Notes [Member] | Senior Notes 6.000% Due 2026 [Member] | Prior to August 15, 2021 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 100.00% |  |  |  |  |
Senior Notes [Member] | Senior Notes 6.000% Due 2026 [Member] | In 2021 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 103.00% |  |  |  |  |
Senior Notes [Member] | Senior Notes 6.375% Due 2026 [Member] |  |  |  |  |  |  |
Long-term Debt, Total |  |  |  | $ 741,729 | $ 740,406 |  |
Debt Instrument, Face Amount |  |  | $ 750,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.375% | 6.375% | 6.375% |  |
Debt Issuance Costs, Gross |  |  | $ 13,000 |  |  |  |
Debt Instrument, Conditional Repurchase Price Percent of Principal |  |  | 101.00% |  |  |  |
Long-term Debt, Gross |  |  |  | $ 750,000 | $ 750,000 |  |
Senior Notes [Member] | Senior Notes 6.375% Due 2026 [Member] | In 2024 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 100.00% |  |  |  |
Senior Notes [Member] | Senior Notes 6.375% Due 2026 [Member] | In 2021 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 103.188% |  |  |  |
Senior Notes [Member] | Senior Notes 6.375% Due 2026 [Member] | Prior to April 1, 2021 [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 100.00% |  |  |  |
Senior Notes [Member] | Senior Notes 6.875% Due 2023 [Member] |  |  |  |  |  |  |
Long-term Debt, Total |  |  |  |  | $ 742,299 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.875% |  |  |  | 6.875% |  |
Debt Instrument, Redemption Price, Percentage | 103.438% |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  | $ 750,000 |  |
Notes Payable, Other Payables [Member] |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  | $ 57,700 |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  | 11.20% | 11.11% |  |
Senior Secured Notes [Member] |  |  |  |  |  |  |
Debt Instrument Covenant Terms, Minimum Required Coverage Ratio |  |  |  | 2.0 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Additional Available Borrowing Capacity |  |  |  |  |  | 170,500 |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 945,500 |
Line of Credit Facility Covenant Terms, Maximum Secured Leverage Ratio Allowed |  |  |  | 4.25 |  |  |
Line of Credit Facility Covenant Terms, Minimum Consolidated Interest Coverage Ratio Required |  |  |  | 1.75 |  |  |
Revolving Credit Facility [Member] | Bank Credit Facility [Member] |  |  |  |  |  |  |
Long-term Line of Credit, Total |  |  |  | $ 235,000 |  |  |
Revolving Credit Facility [Member] | Bank Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  | 0.25% |  |  |
Revolving Credit Facility [Member] | Bank Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  | 0.50% |  |  |
Revolving Credit Facility, Swing Loan and Term Loan A [Member] | Eurodollar [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.75% |  |  |
Revolving Credit Facility, Swing Loan and Term Loan A [Member] | Eurodollar [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.75% |  |  |
Revolving Credit Facility, Swing Loan and Term Loan A [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 0.75% |  |  |
Revolving Credit Facility, Swing Loan and Term Loan A [Member] | Base Rate [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.75% |  |  |
Refinancing Term B Loans [Member] | Eurodollar [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.25% |  |  |
Refinancing Term B Loans [Member] | Eurodollar [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.50% |  |  |
Refinancing Term B Loans [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.25% |  |  |
Refinancing Term B Loans [Member] | Base Rate [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.50% |  |  |
Amended Credit Facility [Member] | Revolving Credit Facility, Swing Loan and Term Loan A [Member] |  |  |  |  |  |  |
Line of Credit Facility, Additional Available Borrowing Capacity |  |  |  | $ 550,000 |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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