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Financing - Narrative (Details) - USD ($) |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
May 08, 2019 | Aug. 24, 2017 | Aug. 14, 2017 | Jul. 01, 2015 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Voluntary principal payment |  |  |  |  | $ 50,000,000 | $ 0 | $ 0
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 |  |  |  |  | 350,000 |  |
Derivative, gain on derivative |  |  |  |  |  | 369,000 |
Term loan |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Gross debt |  |  |  |  | 75,000,000 | 110,000,000 |
Credit Agreement |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt issuance costs, gross |  |  |  |  |  |  | $ 2,074,000
Write off of debt issuance costs |  |  |  |  | 671,000 | $ 829,000 |
Credit Agreement | Revolving Credit |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | 120,000,000 |  |
Remaining borrowing capacity |  |  |  |  | 40,000,000 |  |
Letters of credit outstanding |  |  |  |  | $ 700,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 3.65% |  |
Credit Agreement | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Voluntary principal payment |  | $ 50,000,000 | $ 50,000,000 |  |  |  |
Periodic payment |  |  |  |  | $ 3,000,000 |  |
Gross debt |  |  |  |  | $ 115,000,000 |  |
Credit Agreement | Federal Funds Effective Swap Rate |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 0.50% |  |
Credit Agreement | Base Rate |  |  |  |  |  |  |
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 |  |  |  |  | 0.20% |  |
Credit Agreement | Minimum | Base Rate |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 0.25% |  |
Credit Agreement | Minimum | LIBOR |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 1.25% |  |
Credit Agreement | Maximum | Revolving Credit |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Unused capacity, commitment fee percentage |  |  |  |  | 0.40% |  |
Credit Agreement | Maximum | Base Rate |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 1.25% |  |
Credit Agreement | Maximum | LIBOR |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 2.25% |  |
Credit Agreement | Term loan |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 75,000,000 |  |
Maximum amount, purchase of stock or stock options (up to) |  |  |  |  | 2,000,000 |  |
Maximum amount, share repurchase (up to) |  |  |  |  | 35,000,000 |  |
Maximum amount, dividend and distributions (up to) |  |  |  |  | $ 10,000,000 |  |
Amendment |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | $ 35,000,000 |  |  |  |  |  |
Debt issuance costs, gross | 1,367,000 |  |  |  |  |  |
Write off of debt issuance costs | $ 137,000 |  |  |  |  |  |
Debt instrument, term | 2 years |  |  |  |  |  |
Deferred financing cost capitalized | $ 370,000 |  |  |  |  |  |

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