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Debt - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Feb. 24, 2016
Jul. 06, 2015
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Aug. 01, 2017
Feb. 24, 2017
Feb. 23, 2017
Mar. 31, 2014
Debt Instrument [Line Items]                    
Debt instrument interest rate     8.875%   8.875%          
Debt instrument, covenant description         The indenture governing the senior unsecured notes contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness, (ii) pay dividends on capital stock or redeem, repurchase or retire the Company’s capital stock or subordinated indebtedness, (iii) transfer or sell assets, (iv) make investments, (v) create certain liens, (vi) enter into agreements that restrict dividends or other payments to the Company from its restricted subsidiaries, (vii) consolidate, merge or transfer all or substantially all of the assets of the Company and its restricted subsidiaries, taken as a whole, (viii) engage in transactions with affiliates, and (ix) create unrestricted subsidiaries.          
Gain on early extinguishment of debt       $ 5,825,000   $ 14,489,000        
Outstanding borrowings     $ 0   $ 0          
Outstanding letters of credit     33,600,000   33,600,000          
Revolving Credit Facility [Member]                    
Debt Instrument [Line Items]                    
Revolving credit facility                   $ 500,000,000
Applicable Margin 0.50%                  
Percentage of additional mortgage to be delivered 90.00%                  
Additional Period for the effectiveness of amendment 60 days                  
Borrowing base     175,000,000   $ 175,000,000     $ 175,000,000 $ 125,000,000  
Credit facility, extended maturity month and year         2020-02          
Available capacity on the Revolving Credit Facility     141,400,000   $ 141,400,000          
Commitment fees on unused portion of revolving credit facility         0.50%          
Revolving Credit Facility [Member] | Subsequent Event                    
Debt Instrument [Line Items]                    
Borrowing base             $ 225,000,000      
8.875% Senior Unsecured Notes Due 2023 [Member]                    
Debt Instrument [Line Items]                    
Issuance date   Jul. 06, 2015                
Debt instrument, outstanding principal balance amount   $ 550,000,000                
Debt instrument interest rate   8.875%                
Notes issued percentage price   97.903%                
Debt instrument, proceeds   $ 525,500,000                
Debt instrument, fair value     508,100,000   $ 508,100,000          
Amortization of deferred financing costs and debt discount     $ 800,000 800,000 $ 1,700,000 1,700,000        
Principal amount outstanding       39,500,000   39,500,000        
Gain on early extinguishment of debt           14,500,000        
8.875% Senior Unsecured Notes Due 2023 [Member] | Open Market [Member]                    
Debt Instrument [Line Items]                    
Debt instrument repurchase amount       $ 23,400,000   $ 23,400,000        
Senior PIK Notes [Member]                    
Debt Instrument [Line Items]                    
Debt instrument repurchase amount   $ 510,700,000