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Related Party Transactions - W. Mark Humphrey (Details) - W. Mark Humphrey - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jun. 01, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Related Party Transaction [Line Items] |  |  |  |  |
Consulting services and covenant period | 1 year |  |  |  |
Cash in a lump sum | $ 100,000 |  |  |  |
Payments for services and covenants | $ 350,000 |  |  |  |
Expense under separation and consulting agreement |  | $ 58,000 | $ 29,000 | $ 238,000 | $ 138,000

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