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Correction and Changes in Disclosures - Schedule of Correction of Error (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Non - current assets        
Property and equipment $ 2,617,407 $ 2,418,164 $ 2,453,751  
Deferred tax assets 19,099 18,339 12,708  
Total assets 4,044,961 3,640,595 3,518,574  
Current liabilities        
Taxes and interest payable 70,077 68,483 43,176  
Non-currentliabilities        
Other long-term liabilities 130,621 108,448 54,339  
Deferred tax liabilities 52,465 44,974 32,865  
Total liabilities 2,139,349 2,003,842 2,128,054  
Equity        
Retained earnings 1,944,439 1,681,573 1,441,831  
Net income (3,888) (1,872) (768)  
Total equity 1,905,612 1,636,753 1,390,520 $ 1,893,866
Total liabilities and equity 4,044,961 3,640,595 3,518,574  
Operating expenses        
Maintenance, materials and repairs 132,148 121,781 111,178  
Depreciation and amortization 167,324 167,894 150,548  
Total operating expenses 2,097,913 1,954,332 2,001,076  
Operating profit 429,643 267,520 252,634  
Non-operating income (expense)        
Gain (loss) on foreign currency fluctuations 6,145 13,043 (440,097)  
Profit (loss) before taxes 418,968 364,199 (207,875)  
Income tax expense (49,310) (38,271) (32,759)  
Net profit (loss) $ 369,658 $ 325,928 $ (240,634)  
Earnings (loss) per share        
Basic and diluted $ 8.71 $ 7.69 $ (5.49)  
Increase (decrease) due to corrections of prior period errors [member]        
Non - current assets        
Property and equipment $ (208,497) $ (205,518)    
Deferred tax assets 527      
Total assets (207,970) (205,518)    
Current liabilities        
Taxes and interest payable (11,363)      
Non-currentliabilities        
Other long-term liabilities 7,439      
Deferred tax liabilities 1,837      
Total liabilities (2,087)      
Equity        
Retained earnings (205,518) (196,902)    
Net income (365) (8,616)    
Total equity (205,883) (205,518)   $ (181,242)
Total liabilities and equity (207,970) (205,518)    
Operating expenses        
Maintenance, materials and repairs 7,439      
Depreciation and amortization 2,979 8,616 $ 15,660  
Total operating expenses 10,418 8,616 15,660  
Operating profit (10,418) (8,616) (15,660)  
Non-operating income (expense)        
Gain (loss) on foreign currency fluctuations 11,363      
Profit (loss) before taxes 945 (8,616) (15,660)  
Income tax expense (1,310)      
Net profit (loss) $ (365) $ (8,616) $ (15,660)  
Earnings (loss) per share        
Basic and diluted $ (0.01) $ (0.21) $ (0.36)