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Debt - Revolving Credit Facility/Term Loan (Details) - Bank of America, N.A., and Wells Fargo Bank, N.A. [Member] - Revolving Credit Facility - USD ($)
1 Months Ended
Mar. 23, 2020
Sep. 30, 2018
May 02, 2020
Debt Instrument [Line Items]      
Debt term   5 years  
Borrowing capacity, increase limit   $ 200,000,000.0  
Interest rate (as a percent)     1.70%
Term loan      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 250,000,000.0  
Periodic payment, principal, proportion of total borrowing (as a percent)   1.25%  
Periodic payment, principal   $ 3,100,000  
Line of credit      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 200,000,000.0  
Revolving credit facility borrowed $ 100,000,000.0    
Revolving credit facility available     $ 91,400,000