Long-Term Debt (Break-Down Of Long-Term Debt) (Details) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
Mar. 31, 2011 |
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Debt Instrument [Line Items] | |||||||||||||||||
Net unamortized original issue (discount) premium, net | [1] | $ 10,777 | $ 12,493 | ||||||||||||||
Deferred finance costs, net | (16,006) | (17,883) | |||||||||||||||
Less: current maturities of long term debt | (220) | (179) | |||||||||||||||
Long-term debt, net of current maturities | 961,050 | 946,084 | |||||||||||||||
Revolving credit agreement | |||||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Long-term debt | [2] | $ 0 | 0 | ||||||||||||||
Building loan | |||||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Long-term debt | $ 1,653 | [3] | $ 2,400 | ||||||||||||||
7.75% Senior Notes | |||||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Stated interest rate, percent | 7.75% | 7.75% | |||||||||||||||
Long-term debt | [4] | $ 600,000 | $ 600,000 | ||||||||||||||
6.625% Senior Notes | |||||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Stated interest rate, percent | 6.625% | 6.625% | |||||||||||||||
Long-term debt | [5] | $ 350,000 | $ 350,000 | ||||||||||||||
Construction Loans | |||||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Long-term debt | [6] | $ 16,499 | $ 0 | ||||||||||||||
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