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Financing - Narrative (Details) - USD ($) |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 24, 2017 | Aug. 14, 2017 | Jul. 06, 2017 | Jun. 28, 2017 | Jul. 01, 2015 | Apr. 02, 2015 | Aug. 31, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 105,000,000 |  |  |  |  |  | $ 160,000,000 |
Term loan |  |  |  |  |  |  |  | $ 110,000,000 | 55,000,000 |
Unamortized debt issuance costs |  |  |  |  |  |  |  | 1,513,000 | 1,597,000 |
Total debt |  |  |  |  |  |  |  | 108,487,000 | 53,403,000 |
Proceeds from long-term borrowings |  |  |  |  |  |  |  | 105,000,000 | 55,000,000 | $ 0
Amount of debt prepayment |  | $ 50,000,000 |  |  |  |  | $ 50,000,000 | 50,000,000 | 72,000,000 | $ 6,500,000
Credit Agreement |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
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, gain on derivative |  |  |  |  |  |  |  | 369,000 | 912,000 |
Credit Agreement | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate, effective percentage |  |  |  |  |  |  |  |  |  | 2.96%
Weighted average interest rate |  |  |  |  |  |  |  |  |  | 2.83%
Debt issuance costs, gross |  |  |  |  |  | $ 1,224,000 |  |  |  |
Unamortized debt issuance costs |  |  |  |  |  |  |  |  | $ 671,000 |
Credit Agreement | Federal Funds Effective Swap Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 0.50% |  |  |  |
Credit Agreement | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 1.00% |  |  |  |
Credit Agreement | Minimum | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Unused capacity, commitment fee percentage |  |  |  |  |  | 0.25% |  |  |  |
Credit Agreement | Minimum | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 1.00% |  |  |  |
Credit Agreement | Minimum | LIBOR | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 2.00% |  |  |  |
Credit Agreement | Maximum | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Unused capacity, commitment fee percentage |  |  |  |  |  | 0.40% |  |  |  |
Credit Agreement | Maximum | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 1.75% |  |  |  |
Credit Agreement | Maximum | LIBOR | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 2.75% |  |  |  |
Credit Agreement | Secured Debt | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 25,000,000 |  |  |  |
Term loan |  |  |  |  |  | $ 80,000,000 |  |  |  |
New Credit Agreement |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  | $ 2,074,000 |  |  |  | $ 671,000 |  |
Maximum amount, purchase of stock or stock options (up to) |  |  |  | 2,000,000 |  |  |  |  |  |
Maximum amount, share repurchase (up to) |  |  |  | 20,000,000 |  |  |  |  |  |
Maximum amount, dividend and distributions (up to) |  |  |  | 6,000,000 |  |  |  |  |  |
New Credit Agreement | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 35,000,000 |  |  |  |  |  |
Total debt |  |  |  | 160,000,000 |  |  |  |  |  |
Proceeds from long-term borrowings |  |  | 105,000,000 | 55,000,000 |  |  |  |  |  |
Incremental term loan maximum borrowing capacity (up to) |  |  |  | 50,000,000 |  |  |  |  |  |
New Credit Agreement | Long-term Debt |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Total debt |  |  | 105,000,000 | 55,000,000 |  |  |  |  |  |
New Credit Agreement | Debt Instrument, Redemption, Period One | Long-term Debt |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Periodic payment |  |  | 1,300,000 | 700,000 |  |  |  |  |  |
New Credit Agreement | Debt Instrument, Redemption, Period Two | Long-term Debt |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Periodic payment |  |  | 2,000,000 | 1,000,000 |  |  |  |  |  |
New Credit Agreement | Debt Instrument, Redemption, Period Three | Long-term Debt |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Periodic payment |  |  | $ 2,600,000 | $ 1,400,000 |  |  |  |  |  |
New Credit Agreement | Federal Funds Effective Swap Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |  |  |  |  |
New Credit Agreement | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.00% |  |  |  |  |  |
New Credit Agreement | Minimum | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Unused capacity, commitment fee percentage |  |  |  | 0.25% |  |  |  |  |  |
New Credit Agreement | Minimum | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.75% |  |  |  |  |  |
New Credit Agreement | Minimum | LIBOR | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.75% |  |  |  |  |  |
New Credit Agreement | Maximum | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Unused capacity, commitment fee percentage |  |  |  | 0.50% |  |  |  |  |  |
New Credit Agreement | Maximum | Base Rate | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.00% |  |  |  |  |  |
New Credit Agreement | Maximum | LIBOR | Revolving Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 3.00% |  |  |  |  |  |
Variable Rate Term Loan | Secured Debt |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Amount of debt prepayment | $ 50,000,000 |  |  |  |  |  |  |  |  |
Write off of debt issuance costs | $ 829,000 |  |  |  |  |  |  |  |  |

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Data Type: | na
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