Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Other (Details)

v3.7.0.1
Long-Term Debt - Other (Details)
$ in Thousands
6 Months Ended 12 Months Ended
May 05, 2017
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
May 04, 2017
USD ($)
New Credit Agreement        
Debt covenants        
Maximum Net Leverage Ratio   3.50    
Minimum FCCR   1.25    
Original Credit Agreement        
Debt covenants        
Maximum Net Leverage Ratio     3.00  
Minimum FCCR     1.10  
Revolving Facility | New Credit Agreement        
Long-Term Debt        
Revolving Facility   $ 250,000    
Less: standby letters of credit   (49,080)    
Capacity under Revolving Facility   $ 200,920    
Revolving Facility | Original Credit Agreement        
Long-Term Debt        
Revolving Facility     $ 125,000 $ 125,000
Less: standby letters of credit     (49,080)  
Capacity under Revolving Facility     $ 75,920  
Debt Covenants Term Period One | New Credit Agreement        
Debt covenants        
Maximum Net Leverage Ratio 3.50      
Minimum FCCR 1.25      
Debt Covenants Term Period Two | New Credit Agreement        
Debt covenants        
Maximum Net Leverage Ratio 3.25      
Minimum FCCR 1.25      
Debt Covenants Term Period Three | New Credit Agreement        
Debt covenants        
Maximum Net Leverage Ratio 3.00      
Minimum FCCR 1.25