XML 82 R64.htm IDEA: XBRL DOCUMENT v3.20.2
Revolving Line of Credit - Additional Information (Details)
May 08, 2018
USD ($)
Sep. 30, 2020
USD ($)
Line of Credit Facility [Line Items]    
Line of credit, current borrowing capacity $ 400,000,000  
Revolving credit facility, expiration date May 08, 2023  
Line of credit, option to increase borrowing capacity $ 100,000,000  
Credit facility restrictive covenant, minimum fixed charge ratio 2.50  
Interest coverage ratio 3.00  
Credit facility restrictive covenant, maximum consolidated leverage ratio 3.25  
Credit facility restrictive covenant, maximum consolidated leverage ratio step up 3.75  
Borrowings outstanding   $ 95,000,000.0
Interest rate of borrowings outstanding   1.285%
Federal Fund Rate    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 0.50%  
LIBOR    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 1.00%  
LIBOR | Minimum    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 1.00%  
LIBOR | Maximum    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 1.875%  
Base Rate | Minimum    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 0.00%  
Base Rate | Maximum    
Line of Credit Facility [Line Items]    
Debt instrument basis spread on variable rate 0.875%