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Summary of Significant Accounting Policies - Recent Accounting Pronouncement (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Oct. 01, 2019 | Sep. 30, 2019
--- | --- | --- | ---
Assets: |  |  |
Operating lease right-of-use assets | $ 2,014 | $ 2,448 |
Liabilities: |  |  |
Accounts payable and accrued expenses | 8,523 |  | $ 16,175
Operating lease liabilities - noncurrent portion | $ 1,390 | $ 1,783 |
Accounting Standards Update 2016-02 |  |  |
Assets: |  |  |
Operating lease right-of-use assets |  |  | 2,448
Liabilities: |  |  |
Accounts payable and accrued expenses |  |  | 16,840
Operating lease liabilities - noncurrent portion |  |  | 1,783
As Reported | Accounting Standards Update 2016-02 |  |  |
Liabilities: |  |  |
Accounts payable and accrued expenses |  |  | 16,175
Restatement Adjustment | Accounting Standards Update 2016-02 |  |  |
Assets: |  |  |
Operating lease right-of-use assets |  |  | 2,448
Liabilities: |  |  |
Accounts payable and accrued expenses |  |  | 665
Operating lease liabilities - noncurrent portion |  |  | $ 1,783

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