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Long-Term Debt - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Apr. 17, 2017
Mar. 29, 2017
Jul. 23, 2015
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Long-term debt                
Scheduled maturities of long-term debt in 2022       $ 90,000,000   $ 90,000,000    
Scheduled maturities of long-term debt in 2023       375,000,000   375,000,000    
Scheduled maturities of long-term debt in 2024       1,350,000,000   1,350,000,000    
Scheduled maturities of long-term debt in 2025       375,000,000   375,000,000    
Loss on early retirement of debt, net       $ (27,317,000) $ (89,000) (27,317,000) $ (155,000)  
Amortization of debt issuance costs           $ 3,034,000 1,754,000  
Interest rate (as a percent)       6.00%   6.00%    
Debt instrument interest rate terms           however, that in no event will LIBOR be less than zero or the base rate be less than 1.00% over the term of the New Term Loan Facility or the New Revolving Credit Facility.    
Isle Acquisition                
Long-term debt                
Acquisition date May 01, 2017              
7% Senior Notes                
Long-term debt                
Long-term debt, gross     $ 375,000,000 $ 375,000,000   $ 375,000,000   $ 375,000,000
Interest rate (as a percent)     7.00% 7.00%   7.00%    
Senior notes, maturity date           Aug. 01, 2023    
7% Senior Notes | Prior to August 1, 2018                
Long-term debt                
Redemption price on notes redeemed (as a percent)     107.00%          
Percentage of issue price of principal amount     101.00%          
Percentage of repurchase     100.00%          
7% Senior Notes | Prior to April 1, 2020                
Long-term debt                
Redemption price (as a percent)           101.75%    
7% Senior Notes | Maximum | Prior to August 1, 2018                
Long-term debt                
Redemption price (as a percent)     35.00%          
6% Senior Notes                
Long-term debt                
Long-term debt, gross   $ 375,000,000            
Interest rate (as a percent) 6.00% 6.00%   6.00%   6.00%    
Senior notes, maturity date           Apr. 01, 2025    
ESCROW CASH   $ 1,900,000            
Debt instrument interest rate terms           The 6% Senior Notes will mature on April 1, 2025, with interest payable semi-annually in arrears on April 1 and October 1, commencing October 1, 2017.    
6% Senior Notes | Prior to August 1, 2018                
Long-term debt                
Redemption price on notes redeemed (as a percent)   106.00%            
Percentage of issue price of principal amount   101.00%            
Percentage of repurchase   100.00%            
6% Senior Notes | Minimum                
Long-term debt                
Notification period on or after April 1, 2020           30 days    
6% Senior Notes | Maximum                
Long-term debt                
Notification period on or after April 1, 2020           60 days    
6% Senior Notes | Maximum | Prior to August 1, 2018                
Long-term debt                
Redemption price (as a percent)   35.00%            
Senior Unsecured Notes                
Long-term debt                
Borrowing capacity       $ 375,000,000   $ 375,000,000    
7% Senior Notes                
Long-term debt                
Amortization of debt issuance costs and discount       500,000 $ 900,000 1,400,000 $ 1,800,000  
6% Senior Notes and New Credit Facility                
Long-term debt                
Amortization of debt issuance costs       1,700,000   1,700,000    
Notes | Prior to August 1, 2018                
Long-term debt                
Redemption price on notes redeemed (as a percent)     100.00%          
Notes | Prior to April 1, 2020                
Long-term debt                
Redemption price on notes redeemed (as a percent)   100.00%            
Revolving Credit Facility                
Long-term debt                
Borrowing capacity       1,750,000,000   1,750,000,000    
New Term Loan                
Long-term debt                
Borrowing capacity       1,450,000,000   $ 1,450,000,000    
New senior secured term loan facility     $ 425,000,000          
Term of debt     7 years          
New Term Loan | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           3.25%    
Floor rate (as a percent)           1.00%    
New Term Loan | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           2.25%    
New Revolving Credit Facility                
Long-term debt                
Borrowing capacity       300,000,000   $ 300,000,000    
New senior secured term loan facility     $ 150,000,000          
Term of debt     5 years          
Commitment fee on unused portion of the credit facility           0.50%    
New Revolving Credit Facility | Minimum | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           2.50%    
New Revolving Credit Facility | Minimum | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           1.50%    
New Revolving Credit Facility | Maximum | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           3.25%    
New Revolving Credit Facility | Maximum | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           2.25%    
Credit Facility                
Long-term debt                
Loss on early retirement of debt, net       (700,000)   $ (700,000)    
7% Senior Notes | Minimum                
Long-term debt                
Notification period on or after August 1, 2018           30 days    
7% Senior Notes | Maximum                
Long-term debt                
Notification period on or after August 1, 2018           60 days    
New Term Loan Facility                
Long-term debt                
ESCROW CASH $ 4,500,000              
New senior secured term loan facility 1,450,000,000              
Amount outstanding       1,450,000,000   $ 1,450,000,000    
Credit facility maturity date           Apr. 17, 2024    
Credit facility quarterly principal payments           $ 3,625,000    
Credit facility, payment terms           The Company is be required to make quarterly principal payments in an amount equal to $3,625,000 on the New Term Loan Facility on the last day of each fiscal quarter beginning on June 30, 2017.    
New Term Loan Facility | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           2.25%    
New Term Loan Facility | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           1.25%    
New Revolving Credit Facility                
Long-term debt                
New senior secured term loan facility $ 300,000,000              
Commitment fee on unused portion of the credit facility           0.50%    
Amount outstanding       90,000,000   $ 90,000,000    
Available borrowing capacity       $ 201,300,000   $ 201,300,000    
Interest rate           3.75%    
Credit facility maturity date           Apr. 17, 2022    
Maximum required leverage ratio, year one       650.00%   650.00%    
Maximum required leverage ratio, year two       600.00%   600.00%    
Maximum required leverage ratio, after year two       550.00%   550.00%    
Minimum required interest coverage ratio, year one           200.00%    
Minimum required interest coverage ratio, year two           250.00%    
Minimum required interest coverage ratio, after year two           275.00%    
New Revolving Credit Facility | Minimum | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           1.75%    
New Revolving Credit Facility | Minimum | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           0.75%    
New Revolving Credit Facility | Maximum | LIBOR                
Long-term debt                
Spread on variable rate (as a percent)           2.50%    
New Revolving Credit Facility | Maximum | Base rate                
Long-term debt                
Spread on variable rate (as a percent)           1.50%    
Letter of Credit                
Long-term debt                
Amount outstanding       $ 8,700,000   $ 8,700,000