Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Notes Narrative (Details)

v3.21.2
Long-Term Debt - Notes Narrative (Details) - USD ($)
9 Months Ended
Sep. 30, 2021
Oct. 15, 2021
Oct. 13, 2021
Dec. 31, 2020
Mar. 10, 2017
Debt Instrument [Line Items]          
Principal amount   $ 1.15      
Debt outstanding $ 701,453,000     $ 727,930,000  
Maximum Borrowing 2019 Mortgage Facility $ 112,200,000        
Mortgage notes          
Debt Instrument [Line Items]          
Debt weighted average interest rate on note 3.47%        
Debt outstanding $ 358,700,000        
5.0% Notes          
Debt Instrument [Line Items]          
Stated interest rate 5.00%        
6.125% Notes          
Debt Instrument [Line Items]          
Stated interest rate 6.125%   6.125%   6.125%
Principal amount     $ 250,000,000   $ 250,000,000
6.125% Notes | Period One          
Debt Instrument [Line Items]          
Redemption percentage of principal amount 26320000000.00%        
Gain (Loss) on Extinguishment of Debt $ 13,200,000        
2019 Mortgage Facility [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Unused Borrowing Capacity, Amount $ 19,500,000        
Percent of Collateralized Real Estate 75.00%        
Minimum | 2019 Mortgage Facility [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate 0.50%        
Debt Instrument, Basis Spread LIBOR 1.50%        
Maximum | 2019 Mortgage Facility [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate 1.75%        
Debt Instrument, Basis Spread LIBOR 2.75%