Note 3 - Long-term Debt - Aggregate Minimum Principal Maturities on Long-term Debt (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016
2017		$ 4,173
2018		5,564
2019		5,564
2020		5,564
2021		5,564
Thereafter		1,753,617
Total		1,780,046
The 2017 Senior Credit Facility [Member]
2017	[1]	4,173
2018	[1]	5,564
2019	[1]	5,564
2020	[1]	5,564
2021	[1]	5,564
Thereafter	[1]	528,617
Total		555,046	[1]
2024 Notes [Member]
2017
2018
2019
2020
2021
Thereafter		525,000
Total		525,000
2026 Notes [Member]
2017
2018
2019
2020
2021
Thereafter		700,000
Total		$ 700,000

[1] On April 3, 2017, we borrowed $85.0 million under the terms of the 2017 Incremental Term Loan. Accordingly the balance outstanding under the 2017 Senior Credit Facility increased to $640.0 million and the quarterly principal payments will increase to $1.6 million beginning on June 30, 2017.