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Financing (Long-Term Debt Narratives) (Details) - USD ($) |  |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 14, 2017 | Jul. 06, 2017 | Jun. 28, 2017 | Jul. 01, 2015 | Sep. 30, 2017 | Sep. 30, 2016 | Jun. 30, 2017
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 108,207,000 |  | $ 53,403,000
Debt Issuance Costs, Net |  |  |  |  |  |  | $ 671,000
Principal payments on long-term borrowings | $ 50,000,000 |  |  |  | 50,000,000 | $ 15,000,000 |
Write off of Deferred Debt Issuance Cost |  |  |  |  | 815,000 |  |
Derivative, term of contract |  |  |  | 5 years |  |  |
Fixed quarterly interest rate |  |  |  | 1.52% |  |  |
Derivative notional amount |  |  |  | $ 39,250,000 |  |  |
Outstanding balance, percent |  |  |  | 50.00% |  |  |
Derivative, gain on derivative |  |  |  |  | $ 31,000 | $ 245,000 |
Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 35,000 |  |  |  |
Term Loan |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  | 160,000,000 |  |  |  |
Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term debt, weighted average interest rate |  |  |  |  | 3.70% |  |
June 2017 Term Loan [Member] | Credit Agreement [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  | 55,000,000 |  |  |  |
June 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period One | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  |  | 700,000 |  |  |  |
June 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period Two | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  |  | 1,000,000 |  |  |  |
June 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period Three | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  |  | 1,400,000 |  |  |  |
July 2017 Term Loan [Member] | Credit Agreement [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term Debt |  | $ 105,000,000 |  |  |  |  |
July 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period One | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  | 1,300,000 |  |  |  |  |
July 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period Two | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  | 2,000,000 |  |  |  |  |
July 2017 Term Loan [Member] | Credit Agreement [Member] | Debt Instrument, Redemption, Period Three | Long-term Debt |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic payment |  | $ 2,600,000 |  |  |  |  |
Term Loan [Member] | Credit Agreement [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Incremental Term Loan Maximum Borrowing Capacity |  |  | 50,000,000 |  |  |  |
Deferred finance costs |  |  |  |  | $ 2,074,000 |  |
Credit Facility, Maximum Amount, Purchase Of Stock Or Stock Options |  |  | 2,000,000 |  |  |  |
Credit Facility, Maximum Amount, Share Repurchase |  |  | 20,000,000 |  |  |  |
Credit Facility, Maximum Amount, Dividend And Distributions |  |  | $ 6,000,000 |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Federal Funds Effective Swap Rate [Member] | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.50% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Base Rate | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.00% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Minimum | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Line of credit facility, unused capacity, commitment fee percentage |  |  | 0.25% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Minimum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Minimum | Base Rate | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.75% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Maximum | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Line of credit facility, unused capacity, commitment fee percentage |  |  | 0.50% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Maximum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 3.00% |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Maximum | Base Rate | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 2.00% |  |  |  |

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