Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Other (Details)

v3.10.0.1
Long-Term Debt - Other (Details)
$ in Thousands
9 Months Ended
Apr. 25, 2018
Sep. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Senior Notes 5.625% | Event of Default Scenario | Amended Credit Agreement      
Debt covenants      
Minimum percentage of principal of debt holders to declare debt immediately due and payable 25.00%    
Revolving Facility      
Long-Term Debt      
Revolving Facility   $ 250,000 $ 250,000
Less: standby letters of credit   (59,288) (47,055)
Capacity under Revolving Facility   190,712 $ 202,945
Revolving Facility | Amended Credit Agreement      
Long-Term Debt      
Revolving Facility   $ 250,000  
Debt Covenants Term Period One | Amended Credit Agreement      
Debt covenants      
Maximum Net Leverage Ratio   3.75  
Minimum FCCR   1.25  
Debt Covenants Term Period Two | Amended Credit Agreement      
Debt covenants      
Maximum Net Leverage Ratio   3.50  
Minimum FCCR   1.25  
Debt Covenants Term Period Three | Amended Credit Agreement      
Debt covenants      
Maximum Net Leverage Ratio   3.25  
Minimum FCCR   1.25