Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Notes Narrative (Details)

v3.19.3.a.u2
Long-Term Debt - Notes Narrative (Details) - USD ($)
12 Months Ended
Mar. 10, 2017
Dec. 31, 2019
Dec. 31, 2017
Dec. 31, 2018
Mar. 27, 2017
May 09, 2013
Debt Instrument [Line Items]            
Loss on Debt Redemption 5 Percent Notes   $ 6,700,000        
Outstanding mortgage principal balance   714,968,000   $ 956,017,000    
Double Carry Interest   $ (500,000) $ 700,000      
Mortgage notes            
Debt Instrument [Line Items]            
Debt weighted average interest rate on note   4.36%        
Outstanding mortgage principal balance   $ 355,900,000        
6.125% Notes            
Debt Instrument [Line Items]            
Stated interest rate on debt agreement 6.125% 6.125%   6.125%    
Principal amount $ 250,000,000.0          
Notes issued at a price of principal amount 100.00%          
Redemption Price   106.125%        
Notes redemption price percentage of the par value due to change of control 101.00%          
Debt instrument maximum allowed dividends per share (usd per share) $ 0.12          
Outstanding principal amount of the 6.125% notes 25.00%          
6.125% Notes | Maximum            
Debt Instrument [Line Items]            
Notes redemption price percentage of the principal amount   35.00%        
6.125% Notes | Minimum            
Debt Instrument [Line Items]            
Indebtedness with outstanding balance under other agreements   $ 50,000,000.0        
7.0% Senior Subordinated Notes due 2022            
Debt Instrument [Line Items]            
Stated interest rate on debt agreement         7.00%  
5.0% Senior Subordinated Notes due 2023            
Debt Instrument [Line Items]            
Stated interest rate on debt agreement           5.00%
Principal amount           $ 300,000,000.0
Outstanding notes repurchased amount   289,300,000 10,700,000      
Repurchase amount paid in cash, plus accrued and unpaid interest related thereto   $ 295,900,000 $ 10,600,000      
2019 Mortgage Facility [Member]            
Debt Instrument [Line Items]            
Redemption Price   1.667%