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Long-Term Debt, Net, and Other Borrowings - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt Instrument [Line Items]          
Loss on extinguishment of debt $ 3,200,000 $ 0 $ 0 $ 3,196,000 $ 0
Capitalized debt issuance cost 2,800,000        
Interest rate under long-term debt   3.79%   3.79%  
2017 Term Facility          
Debt Instrument [Line Items]          
Face amount $ 275,000,000        
Debt term 5 years        
Repayments of debt $ 73,000,000        
2019 Term Facility          
Debt Instrument [Line Items]          
Face amount $ 200,000,000        
Debt term 5 years        
Additional borrowing capacity $ 100,000,000        
2019 Term Facility | Minimum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       1.25%  
2019 Term Facility | Minimum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       0.25%  
2019 Term Facility | Maximum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       2.25%  
2019 Term Facility | Maximum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       1.25%  
2017 Revolving Facility          
Debt Instrument [Line Items]          
Face amount $ 75,000,000        
Debt term 5 years        
2019 Revolving Facility          
Debt Instrument [Line Items]          
Face amount $ 200,000,000        
Debt term 5 years        
Additional borrowing capacity   $ 200,000,000   $ 200,000,000  
Outstanding borrowings   0   $ 0  
2019 Revolving Facility | Minimum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       1.25%  
2019 Revolving Facility | Minimum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       0.25%  
2019 Revolving Facility | Minimum | Leverage Ratio Range          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       0.15%  
2019 Revolving Facility | Maximum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       2.25%  
2019 Revolving Facility | Maximum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       1.25%  
2019 Revolving Facility | Maximum | Leverage Ratio Range          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)       0.30%  
Revolving Credit Facility | Letter of Credit          
Debt Instrument [Line Items]          
Face amount   20,000,000   $ 20,000,000  
Revolving Credit Facility | Swingline Loan          
Debt Instrument [Line Items]          
Face amount   $ 10,000,000   $ 10,000,000