Long-Term Debt (Break-Down of Long-Term Debt) (Details) - USD ($) $ in Thousands |
Mar. 31, 2017 |
Dec. 31, 2016 |
Dec. 21, 2016 |
Oct. 31, 2016 |
Oct. 14, 2016 |
Apr. 21, 2015 |
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Debt Instrument [Line Items] | |||||||||||||||
Deferred finance costs, net | $ (31,486) | $ (27,174) | |||||||||||||
Less: current maturities of long term debt | (452) | (276) | |||||||||||||
Long-term debt, net of current maturities | 1,631,809 | 1,593,599 | |||||||||||||
Revolving credit agreement | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Long-term debt | [1] | 0 | |||||||||||||
Construction loans | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Long-term debt | [2] | $ 21,049 | |||||||||||||
Deferred finance costs, net | $ (100) | ||||||||||||||
7.75% Senior Notes due 2020 | Senior notes | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Stated interest rate, percent | 7.75% | 7.75% | |||||||||||||
Long-term debt | [3] | $ 0 | $ 0 | ||||||||||||
6.625% Senior Notes | Senior notes | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Stated interest rate, percent | 6.625% | 6.625% | 6.625% | ||||||||||||
Long-term debt | [4] | $ 350,000 | $ 350,000 | ||||||||||||
Deferred finance costs, net | $ (5,800) | ||||||||||||||
6.000% Senior Notes due 2024 | Senior notes | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Stated interest rate, percent | 6.00% | 6.00% | 6.00% | 6.00% | |||||||||||
Long-term debt | [4] | $ 650,000 | $ 650,000 | ||||||||||||
Deferred finance costs, net | $ (10,700) | ||||||||||||||
6.375% Senior Notes due 2025 | Senior notes | |||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||
Stated interest rate, percent | 6.375% | 6.375% | 6.375% | ||||||||||||
Long-term debt | [4] | $ 600,000 | $ 600,000 | ||||||||||||
Deferred finance costs, net | $ (14,900) | ||||||||||||||
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