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Business and Basis of Presentation - Initial Public Offering (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 29, 2019 | Dec. 31, 2019
Subsidiary, Sale of Stock [Line Items] |  |
Underwriters’ discounts and commissions |  | $ 5,900
Offering costs |  | 3,700
Reclassification of temporary equity to permanent equity |  | 106,237
Additional Paid in Capital |  |
Subsidiary, Sale of Stock [Line Items] |  |
Reclassification of temporary equity to permanent equity |  | $ 106,230
Common Stock |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued and sold (in shares) |  | 6,700,000
Conversion of convertible preferred stock to common stock upon initial public offering (in shares) |  | 65,428,088
Reclassification of temporary equity to permanent equity |  | $ 7
IPO |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued and sold (in shares) | 6,700,000 |
Share price (in dollars per share) | $ 13.00 |
Net proceeds after deducting underwriters’ discounts, commissions, and offering costs | $ 77,600 |
Underwriters’ discounts and commissions | 5,900 |
Offering costs | $ 3,600 |
Conversion of convertible preferred stock to common stock upon initial public offering (in shares) | 65,428,088 |
Conversion basis (in shares) | 1 |
IPO | Additional Paid in Capital |  |
Subsidiary, Sale of Stock [Line Items] |  |
Reclassification of temporary equity to permanent equity | $ 106,200 |
IPO | Common Stock |  |
Subsidiary, Sale of Stock [Line Items] |  |
Reclassification of temporary equity to permanent equity | $ 7 |
Selling Shareholders, Including Over-Allotment Option |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued and sold (in shares) | 4,800,000 |
Over-Allotment Option |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued and sold (in shares) | 1,500,000 |

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