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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Sep. 30, 2017
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Goodwill | $ 301,368 | $ 293,153
Other assets | (184,330) | (185,826)
Loans in process | 1,230,132 | 1,149,934
Loans and Leases Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans in process | 2,161,343 | $ 1,992,905
Restatement Adjustment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Goodwill | 7,135 |
Finite-lived intangible assets | 5,106 |
Other assets | $ 12,241 |

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