Debt (Narratives) (Details) - USD ($)			3 Months Ended	12 Months Ended
	Aug. 09, 2019	May 01, 2018	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	May 08, 2020
Line Of Credit Facility [Line Items]
Loss on extinguishment of debt						$ 1,173,000
Outstanding letters of credit			$ 7,700,000	$ 7,700,000
Interest Expense
Line Of Credit Facility [Line Items]
Amortization of deferred financing costs				2,500,000	$ 600,000	700,000
2018 Credit Agreement | Interest Expense
Line Of Credit Facility [Line Items]
Loss on extinguishment of debt						$ 1,200,000
2018 Credit Agreement | Term Loan
Line Of Credit Facility [Line Items]
Credit Facility, term		5 years
Amount borrowed under Term Loan		$ 190,000,000
2018 Credit Agreement | Revolving Facility
Line Of Credit Facility [Line Items]
Credit Facility, term		5 years
Borrowing capacity from Credit Agreement		$ 40,000,000
2019 Credit Agreement
Line Of Credit Facility [Line Items]
Deferred financing cost			$ 10,500,000	$ 10,500,000
Amortization of deferred financing costs	$ 1,600,000
Debt instrument interest rate				5.60%
2019 Credit Agreement | Second Amendment
Line Of Credit Facility [Line Items]
Amendment start date			May 08, 2020
2019 Credit Agreement | First Amendment
Line Of Credit Facility [Line Items]
Amendment start date			Apr. 08, 2020
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
2019 Credit Agreement | Revolving Facility | Second Amendment
Line Of Credit Facility [Line Items]
Borrowing capacity from Credit Agreement							$ 55,000,000.0
2019 Credit Agreement | Revolving Facility | Applicable Margin for Eurodollar | Second Amendment
Line Of Credit Facility [Line Items]
Euro dollar rate							4.50%
Initial Term Loan | Revolving Facility
Line Of Credit Facility [Line Items]
Base rate	0.00%
Commitment fee	0.35%
Amendments [Member]
Line Of Credit Facility [Line Items]
Deferred financing cost					$ 1,500,000
Maximum | 2018 Credit Agreement
Line Of Credit Facility [Line Items]
Additional incremental loan facility		$ 100,000,000
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%