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v3.20.4

Revision of Prior Period Financial Statements - Schedule of Revised Consolidated Statements of Shareholder's Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  | $ (71) | $ 98 | $ 49 |
Total stockholders’ equity | $ 341,612 |  |  |  | $ 135,409 |  |  |  | 341,612 | 135,409 | 52,137 | $ 79,341
Net loss | (9,651) | $ (4,677) | $ (20,437) | $ (9,065) | (17,300) | $ (18,293) | $ (10,725) | $ (8,250) | (43,830) | (54,568) | (50,378) |
As Reported |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  | 24 |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | 54,422 |
Net loss |  |  |  |  |  |  | (11,467) | (8,019) |  |  | (48,280) |
Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  | 25 |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | (2,285) |
Net loss |  |  |  |  |  |  | $ 742 | $ (231) |  |  | (2,098) |
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  | (71) | 98 | 49 |
Total stockholders’ equity | 11 |  |  |  | 82 |  |  |  | 11 | 82 | (16) | (65)
Accumulated Other Comprehensive Income (Loss) | As Reported |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  | 24 |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | (41) |
Accumulated Other Comprehensive Income (Loss) | Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net change in unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  | 25 |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | 25 |
Accumulated Deficit |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total stockholders’ equity | $ (304,684) |  |  |  | $ (260,393) |  |  |  | (304,684) | (260,393) | (205,825) | (156,801)
Net loss |  |  |  |  |  |  |  |  | $ (43,830) | $ (54,568) | (50,378) |
Accumulated Deficit | As Reported |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | (203,515) | (156,589)
Net loss |  |  |  |  |  |  |  |  |  |  | (48,280) |
Accumulated Deficit | Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total stockholders’ equity |  |  |  |  |  |  |  |  |  |  | (2,310) | $ (212)
Net loss |  |  |  |  |  |  |  |  |  |  | $ (2,098) |

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