Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Long-Term Debt (Parenthetical) (Detail)

v3.6.0.2
Long-Term Debt - Long-Term Debt (Parenthetical) (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
May 09, 2013
Jul. 02, 2012
7.0% Senior Subordinated Notes Due 2022 [Member]        
Debt Instrument [Line Items]        
Stated interest rate on debt agreement 7.00% 7.00%   7.00%
Discount associated with notes $ 1.1 $ 1.3    
5.0% Senior Subordinated Notes due 2023 [Member]        
Debt Instrument [Line Items]        
Stated interest rate on debt agreement 5.00% 5.00% 5.00%  
2014 Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Interest rate   2.25%    
2016 Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Interest rate 2.25%      
Mortgage Notes [Member]        
Debt Instrument [Line Items]        
Discount associated with notes $ 0.2 $ 0.3    
Minimum [Member] | Mortgage Notes [Member]        
Debt Instrument [Line Items]        
Mortgage notes to finance companies-fixed rate, percentage 3.51%      
Mortgage notes to finance companies-variable rate, percentage 1.25%      
Maximum [Member] | Mortgage Notes [Member]        
Debt Instrument [Line Items]        
Mortgage notes to finance companies-fixed rate, percentage 7.03%      
Mortgage notes to finance companies-variable rate, percentage 2.80%