Quarterly report pursuant to Section 13 or 15(d)

Debt (Senior Credit Facility) (Details)

v3.19.1
Debt (Senior Credit Facility) (Details)
 3 Months Ended
Mar. 31, 2019
USD ($)
Term Loan | Term Loan B  
Line of Credit Facility [Line Items]  
Line of credit availability $ 240,700,000.0
Variable interest rate 2.25%
Principal payments, a percentage of the original principal amount 0.25%
Line of credit outstanding balance $ 239,500,000
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 $ 64,900,000
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 $ 475,000,000
Senior Credit Facility | Revolving Credit Facility | LIBOR | Minimum  
Line of Credit Facility [Line Items]  
Variable interest rate 1.50%
Senior Credit Facility | Revolving Credit Facility | LIBOR | Maximum  
Line of Credit Facility [Line Items]  
Variable interest rate 2.75%
Senior Credit Facility | Letters of Credit  
Line of Credit Facility [Line Items]  
Line of credit outstanding balance $ 10,100,000