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Summary of Significant Accounting Policies - Summary of Impact of Adoption of Topic 606 on Consolidated Balance Sheet and Statement of Operations (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Significant Accounting Policies [Line Items] |  |  |
Current portion of deferred revenue | $ 7,000 |  |
Long-term portion of deferred revenue | 12,022 |  |
Accumulated deficit | (205,326) |  | $ (122,828)
Balances Without the Adoption of Topic 606 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Current portion of deferred revenue | 7,917 |  | 6,250
Long-term portion of deferred revenue | 13,594 |  | 16,984
Accumulated deficit |  |  | $ (122,828)
ASC 606 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Current portion of deferred revenue |  | $ 7,000 |
Long-term portion of deferred revenue |  | 14,022 |
Accumulated deficit |  | $ (120,616) |
ASC 606 | Effect of Adoption Higher/ (Lower) |  |  |
Significant Accounting Policies [Line Items] |  |  |
Current portion of deferred revenue | (917) |  |
Long-term portion of deferred revenue | (1,572) |  |
Accumulated deficit | $ (2,489) |  |

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