Debt (Narratives) (Details) - USD ($)		12 Months Ended
	May 01, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Line Of Credit Facility [Line Items]
Loss on extinguishment of debt			$ 1,173,000
Outstanding letters of credit		$ 4,500,000
Interest Expense
Line Of Credit Facility [Line Items]
Amortization of deferred financing costs		600,000	700,000	$ 500,000
2018 Credit Agreement
Line Of Credit Facility [Line Items]
Borrowings under Term Loan	$ 200,000,000
Deferred financing costs			1,500,000
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
Commitment fee	0.35%
Borrowings available under facility		$ 35,500,000
Maximum | 2018 Credit Agreement
Line Of Credit Facility [Line Items]
Additional incremental loan facility	$ 100,000,000
Maximum | 2018 Credit Agreement | London Interbank Offered Rate (LIBOR)
Line Of Credit Facility [Line Items]
Borrowings, interest rate	2.75%
Maximum | 2018 Credit Agreement | Adjusted Base Rate
Line Of Credit Facility [Line Items]
Borrowings, interest rate	1.75%
Maximum | 2018 Credit Agreement | Revolving Facility
Line Of Credit Facility [Line Items]
Commitment fee	0.40%
Minimum | 2018 Credit Agreement | London Interbank Offered Rate (LIBOR)
Line Of Credit Facility [Line Items]
Borrowings, interest rate	1.50%
Minimum | 2018 Credit Agreement | Adjusted Base Rate
Line Of Credit Facility [Line Items]
Borrowings, interest rate	0.50%
Minimum | 2018 Credit Agreement | Revolving Facility
Line Of Credit Facility [Line Items]
Commitment fee	0.25%