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Business (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2016
Income Taxes [Abstract] |  |  |
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations |  | $ 3,689 |
Valuation Allowance, Deferred Tax Asset, Change in Amount |  |  | $ 5,002
Labor And Related Expense | $ 2,476 | 3,685 |
Adjustments For New Accounting Principle Early Adoption [Member] | Accounting Standards Update 2016-09 [Member] |  |  |
New Accounting Pronouncement Early Adoption [Line Items] |  |  |
New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets 1 | 58 | 58 |
Adjustment To Retained Earnings Recognized Deferred Tax Asset Related Stock Compensation Expense | $ 362 | $ 362 |

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