Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Schedule of Long-Term Debt (Details)

v3.20.4
Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Mar. 10, 2017
Debt Instrument [Line Items]      
Mortgage notes to finance companies - fixed rate, bearing interest from 2.41% to 7.03% $ 727,930 $ 714,968  
Debt issuance costs (7,863) (8,082)  
Total debt 720,067 706,886  
Less current maturities (68,244) (69,908)  
Long-Term Debt 651,823 636,978  
Mortgage notes      
Debt Instrument [Line Items]      
Long-term Debt, Percentage Bearing Fixed Interest, Amount 212,135 194,535  
Long-term Debt, Percentage Bearing Variable Interest, Amount 164,889 161,345  
Mortgage notes to finance companies - fixed rate, bearing interest from 2.41% to 7.03% 377,000    
2019 Mortgage Facility [Member]      
Debt Instrument [Line Items]      
Long-term Debt, Percentage Bearing Variable Interest, Amount 100,906 109,088  
2016 Revolving Credit Facility      
Debt Instrument [Line Items]      
2016 Revolving Credit Facility 0 0  
6.125% Notes      
Debt Instrument [Line Items]      
Senior Subordinated Notes 250,000 250,000  
Total debt $ 250,000 $ 250,000  
Stated interest rate on debt agreement 6.125% 6.125% 6.125%
2019 Mortgage Facility [Member]      
Debt Instrument [Line Items]      
Stated interest rate on debt agreement 2.50%    
2019 Mortgage Facility Outstanding $ 100,900    
Debt Instrument, Unused Borrowing Capacity, Amount 11,300    
Long Term Debt Prepayment $ 500