XML 56 R45.htm IDEA: XBRL DOCUMENT v3.19.2
Debt - Composition of Long-Term Debt (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Real estate related and other long-term debt $ 30,338,000 $ 33,515,000
Finance leases 54,363,000  
Finance leases   48,612,000
Long-term debt 1,367,268,000 1,374,456,000
Less: current maturities of long-term debt 71,548,000 92,967,000
Long-term debt, net of current maturities 1,295,720,000 1,281,489,000
Acquisition Line    
Debt Instrument [Line Items]    
Acquisition line 38,113,000 31,842,000
5.00% Senior Notes    
Debt Instrument [Line Items]    
Senior notes $ 544,591,000 543,730,000
Interest rate (as a percentage) 5.00%  
Aggregate principal amount $ 550,000,000 550,000,000
5.25% Senior Notes    
Debt Instrument [Line Items]    
Senior notes $ 297,035,000 296,735,000
Interest rate (as a percentage) 5.25%  
Aggregate principal amount $ 300,000,000 300,000,000
Real estate related    
Debt Instrument [Line Items]    
Real estate related and other long-term debt $ 402,828,000 $ 420,022,000