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Note 5 - Long-term Debt (Details Textual) $ in Thousands |  |  |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 21, 2020 USD ($) | May 08, 2020 USD ($) | Mar. 16, 2020 USD ($) | Jun. 30, 2020 USD ($) | May 06, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 03, 2019 USD ($)
Long-term Line of Credit, Total |  |  |  | $ 1,925,887 |  | $ 1,305,634 |
Operating Lease, Right-of-Use Asset |  |  |  | 946,333 |  | 936,170 |
Operating Lease, Payments |  |  |  | 1,100 |  |  |
Gold Merger Sub [Member] |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  | $ 40,900 |  |
Lessee, Operating Lease, Discount Rate |  |  |  |  | 11.10% |  |
Operating Lease, Liability, Total |  |  |  |  | $ 40,900 |  |
Revolving Credit Facility and Term Loan A [Member] | Base Rate [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.75% |  |  |  |  |
Debt Instrument, Interest Rate Floor |  | 1.50% |  |  |  |  |
Revolving Credit Facility and Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.75% |  |  |  |  |
Debt Instrument, Interest Rate Floor |  | 0.50% |  |  |  |  |
Promissory Note [Member] | Gold Merger Sub [Member] |  |  |  |  |  |  |
Notes Payable, Total |  |  |  |  | $ 57,700 |  |
Line of Credit [Member] |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | 3,000 |  |  |
Line of Credit [Member] | Swing Loan [Member] |  |  |  |  |  |  |
Long-term Line of Credit, Total |  |  |  | $ 64,900 |  | $ 41,300 |
Senior Notes [Member] | Senior Note 8.625% Due 2025 [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 600,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.625% |  |  | 8.625% |  |  |
Debt Issuance Costs, Gross | $ 12,000 |  |  |  |  |  |
Senior Notes [Member] | Senior Note 8.625% Due 2025 [Member] | Debt Instrument, Redemption, Period One [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 100.00% |  |  |  |  |  |
Senior Notes [Member] | Senior Note 8.625% Due 2025 [Member] | Debt Instrument, Redemption, Period Two [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 104.313% |  |  |  |  |  |
Senior Notes [Member] | Senior Note 8.625% Due 2025 [Member] | Debt Instrument, Redemption, Period Three [Member] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 100.00% |  |  |  |  |  |
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 4.75% |  | 4.75% | 4.75%
Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 945,500 |  |  |
Revolving Credit Facility [Member] | Line of Credit [Member] |  |  |  |  |  |  |
Long-term Line of Credit, Total |  |  |  | 865,000 |  | $ 235,000 |
Proceeds from Long-term Lines of Credit |  |  | $ 670,000 |  |  |  |
Debt Instrument, Covenant, Minimum Level of Liquidity |  | $ 250,000 |  |  |  |  |
Debt Instrument, Covenant, Total Net Leverage Ratio |  | 6.00 |  |  |  |  |
Letter of Credit [Member] | Line of Credit [Member] |  |  |  |  |  |  |
Long-term Line of Credit, Total |  |  |  | $ 12,600 |  |  |

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