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Debt - Additional Information (Details) - USD ($)
Jun. 30, 2019
Dec. 15, 2016
Debt Instrument [Line Items]    
Debt instrument, interest rate 5.15%  
Term loan | Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Notes Payable to Bank   $ 235,000,000.0
Revolving loan facility    
Debt Instrument [Line Items]    
Amounts drawn on line of credit $ 0  
Revolving loan facility | Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Credit facility, borrowing capacity   $ 10,000,000.0