Debt (Narratives) (Details) - USD ($)		3 Months Ended
	Aug. 09, 2019	Sep. 30, 2019	Sep. 30, 2018
Line Of Credit Facility [Line Items]
Outstanding letters of credit		$ 4,400,000
Interest Expense
Line Of Credit Facility [Line Items]
Amortization of deferred financing costs		500,000	$ 200,000
2019 Credit Agreement
Line Of Credit Facility [Line Items]
Amortization of deferred financing costs		1,600,000
Deferred financing cost		$ 10,500,000
Debt instrument interest rate		5.47%
2019 Credit Agreement | Term Loan
Line Of Credit Facility [Line Items]
Credit Facility, term	5 years
Borrowing capacity from Credit Agreement	$ 380,000,000
2019 Credit Agreement | Revolving Facility
Line Of Credit Facility [Line Items]
Credit Facility, term	5 years
Borrowing capacity from Credit Agreement	$ 75,000,000
Borrowings available under facility		$ 70,600,000
Initial Term Loan | Applicable Margin for Eurodollar
Line Of Credit Facility [Line Items]
Base rate	0.00%
Initial Term Loan | Revolving Facility
Line Of Credit Facility [Line Items]
Commitment fee	0.35%
Maximum | 2019 Credit Agreement
Line Of Credit Facility [Line Items]
Additional incremental loan facility that may be requested	$ 100,000,000
Maximum | Initial Term Loan | Applicable Margin for Eurodollar
Line Of Credit Facility [Line Items]
Borrowings, interest rate	3.50%
Maximum | Initial Term Loan | Applicable Margin for Base Rate
Line Of Credit Facility [Line Items]
Borrowings, interest rate	2.50%
Maximum | Initial Term Loan | Revolving Facility
Line Of Credit Facility [Line Items]
Commitment fee	0.40%
Minimum | Initial Term Loan | Applicable Margin for Eurodollar
Line Of Credit Facility [Line Items]
Borrowings, interest rate	1.25%
Minimum | Initial Term Loan | Applicable Margin for Base Rate
Line Of Credit Facility [Line Items]
Borrowings, interest rate	0.25%
Minimum | Initial Term Loan | Revolving Facility
Line Of Credit Facility [Line Items]
Commitment fee	0.25%