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Long-term Debt - Narrative - Senior Credit Facility (Details) - USD ($)
Sep. 20, 2018
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]      
Outstanding debt balance   $ 623,800,000 $ 628,100,000
Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 1,000,000,000.0    
Maximum leverage ratio increases for two consecutive quarters 0.50    
Senior Credit Facility, Due 2023 | Secured debt | Revolving Credit Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 650,000,000.0    
Outstanding debt balance   0  
Senior Credit Facility, Due 2023 | Secured debt | Term Loan      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 350,000,000.0    
Senior Credit Facility, Due 2023 | Secured debt | Letter of credit      
Debt Instrument [Line Items]      
Outstanding debt balance   $ 29,700,000  
Minimum | Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Basis spread on variable rate on debt instrument 1.75%    
Required coverage ratio 3.00    
Minimum | Senior Credit Facility, Due 2023 | Secured debt | Revolving Credit Facility      
Debt Instrument [Line Items]      
Commitment fee percentage 0.30%    
Minimum | Senior Credit Facility, Due 2023 | Secured debt | Letter of credit      
Debt Instrument [Line Items]      
Unused capacity commitment fee percentage 1.75%    
Maximum | Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Basis spread on variable rate on debt instrument 2.50%    
Leverage ratio on pro forma basis 3.25    
Maximum | Senior Credit Facility, Due 2023 | Secured debt | Revolving Credit Facility      
Debt Instrument [Line Items]      
Commitment fee percentage 0.45%    
Maximum | Senior Credit Facility, Due 2023 | Secured debt | Letter of credit      
Debt Instrument [Line Items]      
Unused capacity commitment fee percentage 2.50%    
December 31, 2018 - December 30, 2020 | Senior Credit Facility, Due 2023 | Secured debt | Term Loan      
Debt Instrument [Line Items]      
Annual principal payment as a percent 5.00%    
December 31, 2020 - December 30, 2022 | Senior Credit Facility, Due 2023 | Secured debt | Term Loan      
Debt Instrument [Line Items]      
Annual principal payment as a percent 7.50%    
December 31, 2022 - maturity | Senior Credit Facility, Due 2023 | Secured debt | Term Loan      
Debt Instrument [Line Items]      
Annual principal payment as a percent 10.00%    
Through September 30, 2020 | Maximum | Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Required leverage ratio 4.00    
October 1, 2020 - September 30, 2021 | Maximum | Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Required leverage ratio 3.75    
October 1, 2021, therafter | Maximum | Senior Credit Facility, Due 2023 | Secured debt      
Debt Instrument [Line Items]      
Required leverage ratio 3.50