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Debt - Additional Information (Details) - USD ($)
3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Jul. 31, 2017
Debt Instrument [Line Items]        
Revolving credit facility $ 168,000,000 $ 96,000,000    
Interest Rate Swap        
Debt Instrument [Line Items]        
Percentage of interest rate       1.8325%
Derivative, Notional Amount 150,000     $ 150,000
Credit Agreement [Member] | Revolving credit facility        
Debt Instrument [Line Items]        
Maximum borrowing capacity 250,000,000      
Revolving credit facility 168,000,000      
Outstanding letters of credit 3,009,000      
Aggregate available credit facilities $ 78,991,000      
Weighted-average interest rates 3.70%   3.68%  
Percentage of interest rate 3.53%      
Credit Agreement [Member] | Term A Loans And Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Maturity dates June 29, 2022      
Covenant requirement, permitted leverage ratio a maximum First Lien Net Leverage Ratio and (ii) a minimum consolidated interest coverage ratio, each calculated on a trailing four quarter basis      
Debt instrument, covenant compliance we were in compliance with the financial covenants      
Credit Agreement [Member] | Term A Loans And Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Debt Instrument [Line Items]        
Interest rate, description 2.00%, 1.75% or 1.50%      
Floor rate 0.00%      
Credit Agreement [Member] | Term A Loans And Revolving Credit Facility [Member] | Eurodollar [Member]        
Debt Instrument [Line Items]        
Interest rate, description 2.00%, 1.75% or 1.50%      
Credit Agreement [Member] | Term A Loans And Revolving Credit Facility [Member] | Base Rate        
Debt Instrument [Line Items]        
Interest rate, description 1.00%, 0.75% or 0.50%      
Credit Agreement [Member] | Term A Loan [Member]        
Debt Instrument [Line Items]        
Aggregate principal amount $ 250,000,000      
Weighted-average interest rates 3.48%   3.43%  
Percentage of interest rate 3.42%