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.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Note 4 - Long-term Debt - Aggregate Minimum Principal Maturities on Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
2019
2020
2021
2022
2023
Thereafter	2,570,026
Total Debt	2,570,026
The 2017 Senior Credit Facility [Member]
2019
2020
2021
2022
2023
Thereafter	595,026
Total Debt	595,026	$ 635,234
2024 Notes [Member]
2019	0
2020	0
2021	0
2022	0
2023
Thereafter	525,000
Total Debt	525,000
2026 Notes [Member]
2019	0
2020	0
2021	0
2022	0
2023
Thereafter	700,000
Total Debt	700,000
2027 Notes [Member]
2019
2020
2021
2022
2023
Thereafter	750,000
Total Debt	$ 750,000