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Financing - Narrative (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 17, 2017 | Aug. 14, 2017 | Jul. 06, 2017 | Jun. 28, 2017 | Jul. 01, 2015 | Mar. 31, 2019 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jun. 30, 2018 | Jun. 27, 2017
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  | $ 128,769,000 | $ 128,769,000 |  | $ 128,769,000 |  | $ 108,487,000 |
Proceeds from long-term borrowings |  |  |  |  |  |  |  |  | 0 | $ 105,000,000 |  |
Repayments of debt |  |  |  |  |  |  |  |  | 35,000,000 | 0 |  |
Debt issuance costs |  |  |  |  |  | 1,231,000 | 1,231,000 |  | 1,231,000 |  | 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 |  |  |  |  |  |  | 93,000 |  | 225,000 |  |  |
Derivative, gain on derivative |  |  |  |  |  |  |  | $ 138,000 |  | $ 341,000 |  |
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 |  |  |  | $ 85,000,000 |  |  |  |  |  |  |  | $ 35,000,000
Ticking fee rate (in percentage) |  |  |  | 0.30% |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  | 671,000 | $ 671,000 |  | $ 671,000 |  | 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 |  |  |  |  |  |  |  |
Repayments of debt | $ 50,000,000 |  |  |  |  | $ 15,000,000 |  |  |  |  |  |
Credit Agreement | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |
Long-term debt, weighted average interest rate |  |  |  |  |  | 4.30% | 4.30% |  | 4.30% |  |  |
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 | Period one | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, periodic payment |  |  | 1,300,000 | $ 700,000 |  |  |  |  |  |  |  |
Credit Agreement | Period two | Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, periodic payment |  |  | 2,000,000 | 1,000,000 |  |  |  |  |  |  |  |
Credit Agreement | 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% |  |  |  |  |  |  |  |

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