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Financing - Narrative (Details) - USD ($)						3 Months Ended
Financing - Narrative (Details) - USD ($)	Aug. 17, 2017	Aug. 14, 2017	Jul. 06, 2017	Jun. 28, 2017	Jul. 01, 2015	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Jun. 29, 2017
Line of Credit Facility [Line Items]
Long-term debt						$ 108,581,000		$ 108,487,000
Proceeds from long-term borrowings						0	$ 105,000,000
Principal payments on long-term borrowings						0	50,000,000
Debt issuance costs						1,419,000		1,513,000
Derivative, term of contract					5 years
Fixed quarterly interest rate					1.52%
Derivative notional amount					$ 39,250,000
Outstanding balance, percent (equal to)					50.00%
Derivative, loss on derivative						$ 3,000
Derivative, gain on derivative							$ 31,000
Credit Agreement
Line of Credit Facility [Line Items]
Long-term debt			$ 105,000,000	$ 55,000,000
Proceeds from long-term borrowings			105,000,000	55,000,000
Incremental term loan				50,000,000
Line of credit, incremental term loan borrowing capacity				$ 35,000,000					$ 85,000,000
Ticking fee rate (in percentage)				0.30%
Debt issuance costs								671,000
Credit Agreement \| Term Loan
Line of Credit Facility [Line Items]
Long-term debt				$ 160,000,000
Credit Agreement \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity (up to)				$ 35,000,000
Principal payments on long-term borrowings	$ 50,000,000
Credit Agreement \| Long-term Debt
Line of Credit Facility [Line Items]
Principal payments on long-term borrowings		$ 50,000,000
Long-term debt, weighted average interest rate						4.10%
Write off of deferred debt issuance cost		$ 829,000
Credit Agreement \| Federal Funds \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Credit Agreement \| Base Rate \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Credit Agreement \| Minimum \| Base Rate \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				0.75%
Credit Agreement \| Minimum \| LIBOR \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				1.75%
Credit Agreement \| Maximum \| Base Rate \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				2.00%
Credit Agreement \| Maximum \| LIBOR \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				3.00%
Credit Agreement \| Debt Instrument, Redemption, Period One \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, periodic payment			1,300,000	$ 700,000
Credit Agreement \| Debt Instrument, Redemption, Period Two \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, periodic payment			2,000,000	1,000,000
Credit Agreement \| Debt Instrument, Redemption, Period Three \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, periodic payment			$ 2,600,000	1,400,000
Term Loan \| Credit Agreement
Line of Credit Facility [Line Items]
Purchase of stock (up to)				2,000,000
Share repurchase (up to)				20,000,000
Dividend and distributions (up to)				$ 6,000,000
Deferred finance costs								$ 2,074,000
Term Loan \| Credit Agreement \| Minimum \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, unused capacity, commitment fee percentage				0.25%
Term Loan \| Credit Agreement \| Maximum \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, unused capacity, commitment fee percentage				0.50%