Long Term Debt (Narratives) (Details) |
12 Months Ended | |||||||||||||||||
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Aug. 03, 2015 |
Apr. 01, 2015
USD ($)
|
Jun. 30, 2014
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
Feb. 02, 2015
USD ($)
$ / shares
shares
|
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Debt Instrument [Line Items] | ||||||||||||||||||
Total leverage ratio | 5.95 | |||||||||||||||||
Senior leverage ratio | 3.00 | |||||||||||||||||
Interest coverage ratio | 2.50 | |||||||||||||||||
Debt issuance costs | $ 13,979,000 | $ 84,000 | $ 2,990,000 | |||||||||||||||
Long-term debt, gross | 1,372,113,000 | 1,038,796,000 | ||||||||||||||||
Letters of credit outstanding | 22,500,000 | |||||||||||||||||
Remaining borrowing capacity | 127,500,000 | |||||||||||||||||
Loss on extinguishment of debt | 27,700,000 | 0 | 103,000 | |||||||||||||||
Payment of bond call premium | 20,244,000 | 0 | $ 0 | |||||||||||||||
Stock Appreciation Rights (SARs) | Class A Common Stock | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Stock appreciation rights | shares | 3,000,000 | |||||||||||||||||
Exercise price of rights | $ / shares | $ 13.00 | |||||||||||||||||
Searchlight ALX, LP Promissory Note [Member] | Stock Appreciation Rights (SARs) | Class A Common Stock | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Stock appreciation rights | shares | 3,000,000 | |||||||||||||||||
Exercise price of rights | $ / shares | $ 13.00 | |||||||||||||||||
Medium-term Notes [Member] | Senior Credit Facility | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Loan fees and other expenses | 300,000 | |||||||||||||||||
Debt issuance costs | 6,200,000 | |||||||||||||||||
Long-term debt, gross | [1] | 512,937,000 | 279,000,000 | |||||||||||||||
Medium-term Notes [Member] | Senior Credit Facility | Term B Loan | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Face amount of debt | $ 275,000,000.0 | |||||||||||||||||
Required principal payment percentage | 0.25% | |||||||||||||||||
Long-term debt, gross | 272,900,000 | |||||||||||||||||
Medium-term Notes [Member] | Senior Credit Facility | Term B Loan | London Interbank Offered Rate (LIBOR) | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Basis spread on variable rate | 3.25% | |||||||||||||||||
LIBOR floor | 0.0075 | |||||||||||||||||
Medium-term Notes [Member] | Senior Credit Facility | Term Loan [Member] | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Maximum borrowing capacity | 240,000,000.0 | |||||||||||||||||
Long-term debt, gross | 240,000,000 | |||||||||||||||||
Medium-term Notes [Member] | Senior Credit Facility | Revolving Credit Facility | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Maximum borrowing capacity | 150,000,000.0 | |||||||||||||||||
Long-term debt, gross | 0 | |||||||||||||||||
Senior Notes [Member] | 2025 Notes | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Face amount of debt | $ 450,000,000.0 | |||||||||||||||||
Debt issuance costs | $ 7,900,000 | |||||||||||||||||
Long-term debt, gross | [2] | $ 450,000,000 | 0 | |||||||||||||||
Stated percentage | 6.875% | 6.875% | ||||||||||||||||
Issuance price, percent | 99.105% | |||||||||||||||||
Redemption price, percentage | 100.00% | |||||||||||||||||
Maturity date | Apr. 15, 2025 | |||||||||||||||||
Frequency of periodic payment | Semi-annual interest payments | |||||||||||||||||
Percentage of principal amount if default | 30.00% | |||||||||||||||||
Unamortized discount | $ 3,817,000 | |||||||||||||||||
Senior Notes [Member] | 2025 Notes | Minimum | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Percentage of principal | 1 | |||||||||||||||||
Senior Notes [Member] | 2025 Notes | Maximum | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Percentage of principal | 1.01 | |||||||||||||||||
Senior Notes [Member] | 2019 Notes | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Long-term debt, gross | [2] | 0 | 425,000,000 | |||||||||||||||
Repayments of Debt | $ 425,000,000 | |||||||||||||||||
Loss on extinguishment of debt | (27,700,000) | |||||||||||||||||
Payment of bond call premium | 20,200,000 | |||||||||||||||||
Unamortized deferred loan costs | 5,400,000 | |||||||||||||||||
Write off of deferred debt discount | 2,100,000 | |||||||||||||||||
Unamortized discount | 2,118,000 | |||||||||||||||||
Senior Notes [Member] | 2021 Notes | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Debt issuance costs | 3,600,000 | |||||||||||||||||
Long-term debt, gross | [3] | $ 325,000,000 | 325,000,000 | |||||||||||||||
Stated percentage | 6.75% | 6.75% | ||||||||||||||||
Maturity date | Jun. 01, 2021 | |||||||||||||||||
Frequency of periodic payment | Semi-annual interest payments | |||||||||||||||||
Percentage of principal amount if default | 25.00% | |||||||||||||||||
Earliest call date | Jun. 01, 2016 | |||||||||||||||||
Senior Notes [Member] | 2021 Notes | Minimum | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Percentage of principal | 1.00 | |||||||||||||||||
Amount eligible for purchase | $ 1,000 | |||||||||||||||||
Senior Notes [Member] | 2021 Notes | Maximum | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Percentage of principal | 1.01 | |||||||||||||||||
Amount eligible for purchase | $ 2,000 | |||||||||||||||||
Unsecured Debt [Member] | Searchlight ALX, LP Promissory Note [Member] | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Face amount of debt | $ 75,000,000.0 | |||||||||||||||||
Long-term debt, gross | [4] | 75,000,000 | 0 | |||||||||||||||
Stated percentage | 7.50% | |||||||||||||||||
Issuance price, percent | 100.00% | |||||||||||||||||
Unamortized discount | 20,190,000 | $ 21,700,000 | ||||||||||||||||
Notes Payable to Banks | Wells Fargo Note | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Face amount of debt | $ 10,000,000 | |||||||||||||||||
Debt issuance costs | $ 100,000 | |||||||||||||||||
Long-term debt, gross | [5] | $ 9,176,000 | $ 9,767,000 | |||||||||||||||
Notes Payable to Banks | Wells Fargo Note | London Interbank Offered Rate (LIBOR) | ||||||||||||||||||
Debt Instrument [Line Items] | ||||||||||||||||||
Basis spread on variable rate | 2.25% | |||||||||||||||||
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