Annual report pursuant to Section 13 and 15(d)

Debt (Senior Credit Facility) (Details)

v3.19.3.a.u2
Debt (Senior Credit Facility) (Details)
 12 Months Ended
Dec. 31, 2019
USD ($)
Nov. 25, 2019
USD ($)
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Line of credit, outstanding balance   $ 100,000,000.0
Term Loan | Term Loan B    
Line of Credit Facility [Line Items]    
Line of credit availability $ 240,700,000  
Basis spread on variable rate (as a percent) 2.25%  
Principal payments, a percentage of the original principal amount 0.25%  
Line of credit, outstanding balance $ 237,700,000  
Term Loan | Term Loan A    
Line of Credit Facility [Line Items]    
Total leverage ratio 6.50  
Secured leverage ratio 4.00  
Senior credit facility    
Line of Credit Facility [Line Items]    
Remainder amount available for borrowing $ 266,900,000  
Senior credit facility | Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Line of credit availability 550,000,000.0  
Line of credit, outstanding balance $ 275,000,000.0  
Senior credit facility | Revolving Credit Facility | LIBOR | Minimum    
Line of Credit Facility [Line Items]    
Basis spread on variable rate (as a percent) 1.50%  
Senior credit facility | Revolving Credit Facility | LIBOR | Maximum    
Line of Credit Facility [Line Items]    
Basis spread on variable rate (as a percent) 2.75%  
Senior credit facility | Letters of Credit    
Line of Credit Facility [Line Items]    
Line of credit, outstanding balance $ 8,100,000