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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands | Jan. 01, 2019 | Sep. 30, 2019
--- | --- | ---
New Accounting Pronouncements |  |
Right-of-use asset |  | $ 965
ASU 2016-02 |  |
New Accounting Pronouncements |  |
Package of practical expedients | true |
Incremental borrowing rate |  | 7.49%
ASU 2016-02 | Adjustment |  |
New Accounting Pronouncements |  |
Lease liability | $ 1,900 |
Right-of-use asset | $ 1,900 |

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